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Karaca O, Sütçü G, Kılınç M. The Effects of Trunk and Extremity Functions on Activities of Daily Living, Balance, and Gait in Stroke. Neurol Res 2023; 45:312-318. [PMID: 36319611 DOI: 10.1080/01616412.2022.2142424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Abstract
OBJECTIVES The primary aim is to investigate the effect of the trunk, upper extremity, and lower extremity functions on activities of daily living (ADL), balance, and gait. The second aim is to investigate the effect of trunk position sense on trunk control. METHODS Thirty-six patients with chronic stroke were included in the study. The Trunk Impairment Scale (TIS), Barthel Index (BI), Berg Balance Scale (BBS), and 2-minute walking test (2MWT) were used for the assessment of trunk function, ADL, balance, and gait respectively. The Stroke Rehabilitation Assessment of Movement upper extremity (STREAM-UE) and lower extremity (STREAM-LE) sub-scales were used to evaluate extremity functions. The trunk position sense was measured with a digital inclinometer. RESULTS The mean age of the participants was 58.8 ± 12.6 years. In multiple regression analysis, TIS values were found to have a positive effect on BI and BBS (p < 0.05), and STREAM-LE values have a positive effect on BBS and 2MWT (p < 0.05). STREAM-UE values were no significant effect on BI, BBS, or 2MWT (p > 0.05). Trunk position sense was found to have a positive effect on TIS (p < 0.05). DISCUSSION The results of this study showed that trunk functions are more related to ADL and balance than extremity functions. Therefore, trunk training should be included as a basic application in physiotherapy programs for stroke patients.
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Affiliation(s)
- Osman Karaca
- Department of Physiotherapy and Rehabilitation, KTO Karatay University, Konya, Türkiye
| | - Gülşah Sütçü
- Department of Physical Therapy and Rehabilitation, Hacettepe University, Ankara, Türkiye
| | - Muhammed Kılınç
- Department of Physical Therapy and Rehabilitation, Hacettepe University, Ankara, Türkiye
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152
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Bensmaia SJ, Tyler DJ, Micera S. Restoration of sensory information via bionic hands. Nat Biomed Eng 2023; 7:443-455. [PMID: 33230305 PMCID: PMC10233657 DOI: 10.1038/s41551-020-00630-8] [Citation(s) in RCA: 80] [Impact Index Per Article: 80.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 09/13/2020] [Indexed: 12/19/2022]
Abstract
Individuals who have lost the use of their hands because of amputation or spinal cord injury can use prosthetic hands to restore their independence. A dexterous prosthesis requires the acquisition of control signals that drive the movements of the robotic hand, and the transmission of sensory signals to convey information to the user about the consequences of these movements. In this Review, we describe non-invasive and invasive technologies for conveying artificial sensory feedback through bionic hands, and evaluate the technologies' long-term prospects.
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Affiliation(s)
- Sliman J Bensmaia
- Department of Organismal Biology and Anatomy, University of Chicago, Chicago, IL, USA.
- Committee on Computational Neuroscience, University of Chicago, Chicago, IL, USA.
- Grossman Institute for Neuroscience, Quantitative Biology, and Human Behavior, University of Chicago, Chicago, IL, USA.
| | - Dustin J Tyler
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
- Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, OH, USA
| | - Silvestro Micera
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, Italy.
- Translational Neural Engineering Laboratory, Center for Neuroprosthetics and Institute of Bioengineering, School of Engineering, École Polytechnique Federale de Lausanne, Lausanne, Switzerland.
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153
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Nurmi T, Hakonen M, Bourguignon M, Piitulainen H. Proprioceptive response strength in the primary sensorimotor cortex is invariant to the range of finger movement. Neuroimage 2023; 269:119937. [PMID: 36791896 DOI: 10.1016/j.neuroimage.2023.119937] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 02/09/2023] [Indexed: 02/16/2023] Open
Abstract
Proprioception is the sense of body position and movement that relies on afference from the proprioceptors in muscles and joints. Proprioceptive responses in the primary sensorimotor (SM1) cortex can be elicited by stimulating the proprioceptors using evoked (passive) limb movements. In magnetoencephalography (MEG), proprioceptive processing can be quantified by recording the movement evoked fields (MEFs) and movement-induced beta power modulations or by computing corticokinematic coherence (CKC) between the limb kinematics and cortical activity. We examined whether cortical proprioceptive processing quantified with MEF peak strength, relative beta suppression and rebound power and CKC strength is affected by the movement range of the finger. MEG activity was measured from 16 right-handed healthy volunteers while movements were applied to their right-index finger metacarpophalangeal joint with an actuator. Movements were either intermittent, every 3000 ± 250 ms, to estimate MEF or continuous, at 3 Hz, to estimate CKC. In both cases, 4 different ranges of motion of the stimuli were investigated: 15, 18, 22 and 26 mm for MEF and 6, 7, 9 and 13 mm for CKC. MEF amplitude, relative beta suppression and rebound as well as peak CKC strength at the movement frequency were compared between the movement ranges in the source space. Inter-individual variation was also compared between the MEF and CKC strengths. As expected, MEF and CKC responses peaked at the contralateral SM1 cortex. MEF peak, beta suppression and rebound and CKC strengths were similar across all movement ranges. Furthermore, CKC strength showed a lower degree of inter-individual variation compared with MEF strength. Our result of absent modulation by movement range in cortical responses to passive movements of the finger indicates that variability in movement range should not hinder comparability between different studies or participants. Furthermore, our data indicates that CKC is less prone to inter-individual variability than MEFs, and thus more advantageous in what pertains to statistical power.
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Affiliation(s)
- Timo Nurmi
- Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä 40014, Finland; Department of Neuroscience and Biomedical Engineering, Aalto University, Espoo 02150, Finland.
| | - Maria Hakonen
- Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä 40014, Finland; Department of Neuroscience and Biomedical Engineering, Aalto University, Espoo 02150, Finland; A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, United States
| | - Mathieu Bourguignon
- Laboratory of Neurophysiology and Movement Biomechanics, UNI - ULB Neuroscience Institute, Université libre de Bruxelles (ULB), Brussels 1070, Belgium; Laboratoire de Neuroanatomie et Neuroimagerie Translationnelles, UNI - ULB Neuroscience Institute, Université libre de Bruxelles (ULB), Brussels 1070, Belgium; BCBL, Basque Center on Cognition, Brain and Language, San Sebastian 20009, Spain
| | - Harri Piitulainen
- Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä 40014, Finland; Department of Neuroscience and Biomedical Engineering, Aalto University, Espoo 02150, Finland; Aalto NeuroImaging, Aalto University, Espoo 02150, Finland
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154
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Horváth Á, Ferentzi E, Ragó A, Köteles F. The retention of proprioceptive information is suppressed by competing verbal and spatial task. Q J Exp Psychol (Hove) 2023; 76:783-791. [PMID: 35410549 PMCID: PMC10031633 DOI: 10.1177/17470218221096251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Proprioceptive information makes us able to perceive the position of our joints from an internal point of view. In the certain cases, proprioceptive information has to be stored in short-term memory, for example, during the learning of new motor skills or the assessment of proprioceptive accuracy. However, there are contradictory findings about the modality-specific storage of proprioceptive information in working memory. In this preregistered study, we applied the interference paradigm, assessing proprioceptive memory capacity in the subdominant elbow joint for 35 young individuals in five different experimental conditions: (a) without competing task/interference (baseline condition), (b) with motor interference, (c) with spatial interference, (d) with visual interference, and (e) with verbal interference. Proprioceptive span was lower in the verbal and spatial interference condition than in the baseline condition, whereas no significant differences were found for the motor and visual conditions. These results indicate that individuals use verbal and spatial strategies to encode proprioceptive information in short-term memory, and, in contrast to our expectation, the motor subsystem of working memory is not substantially involved in this process.
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Affiliation(s)
- Áron Horváth
- Doctoral School of Psychology, Eötvös Loránd University (ELTE), Budapest, Hungary
- Institute of Health Promotion and Sport Sciences, Eötvös Loránd University (ELTE), Budapest, Hungary
| | - Eszter Ferentzi
- Institute of Health Promotion and Sport Sciences, Eötvös Loránd University (ELTE), Budapest, Hungary
| | - Anett Ragó
- Institute of Psychology, Eötvös Loránd University (ELTE), Budapest, Hungary
| | - Ferenc Köteles
- Institute of Health Promotion and Sport Sciences, Eötvös Loránd University (ELTE), Budapest, Hungary
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155
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Tsay JS, Tan S, Chu MA, Ivry RB, Cooper EA. Low Vision Impairs Implicit Sensorimotor Adaptation in Response to Small Errors, But Not Large Errors. J Cogn Neurosci 2023; 35:736-748. [PMID: 36724396 PMCID: PMC10512469 DOI: 10.1162/jocn_a_01969] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Successful goal-directed actions require constant fine-tuning of the motor system. This fine-tuning is thought to rely on an implicit adaptation process that is driven by sensory prediction errors (e.g., where you see your hand after reaching vs. where you expected it to be). Individuals with low vision experience challenges with visuomotor control, but whether low vision disrupts motor adaptation is unknown. To explore this question, we assessed individuals with low vision and matched controls with normal vision on a visuomotor task designed to isolate implicit adaptation. We found that low vision was associated with attenuated implicit adaptation only for small visual errors, but not for large visual errors. This result highlights important constraints underlying how low-fidelity visual information is processed by the sensorimotor system to enable successful implicit adaptation.
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156
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Promsri A, Bangkomdet K, Jindatham I, Jenchang T. Leg Dominance—Surface Stability Interaction: Effects on Postural Control Assessed by Smartphone-Based Accelerometry. Sports (Basel) 2023; 11:sports11040075. [PMID: 37104149 PMCID: PMC10145104 DOI: 10.3390/sports11040075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 03/19/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023] Open
Abstract
The preferential use of one leg over another in performing lower-limb motor tasks (i.e., leg dominance) is considered to be one of the internal risk factors for sports-related lower-limb injuries. The current study aimed to investigate the effects of leg dominance on postural control during unipedal balancing on three different support surfaces with increasing levels of instability: a firm surface, a foam pad, and a multiaxial balance board. In addition, the interaction effect between leg dominance and surface stability was also tested. To this end, a tri-axial accelerometer-based smartphone sensor was placed over the lumbar spine (L5) of 22 young adults (21.5 ± 0.6 years) to record postural accelerations. Sample entropy (SampEn) was applied to acceleration data as a measure of postural sway regularity (i.e., postural control complexity). The results show that leg dominance (p < 0.001) and interaction (p < 0.001) effects emerge in all acceleration directions. Specifically, balancing on the dominant (kicking) leg shows more irregular postural acceleration fluctuations (high SampEn), reflecting a higher postural control efficiency or automaticity than balancing on the non-dominant leg. However, the interaction effects suggest that unipedal balancing training on unstable surfaces is recommended to reduce interlimb differences in neuromuscular control for injury prevention and rehabilitation.
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Affiliation(s)
- Arunee Promsri
- Department of Physical Therapy, School of Allied Health Sciences, University of Phayao, Phayao 56000, Thailand
- Unit of Excellence in Neuromechanics, School of Allied Health Sciences, University of Phayao, Phayao 56000, Thailand
- Correspondence: ; Tel.: +66-54-466-666 (ext. 3817)
| | - Kotchakorn Bangkomdet
- Department of Physical Therapy, School of Allied Health Sciences, University of Phayao, Phayao 56000, Thailand
| | - Issariya Jindatham
- Department of Physical Therapy, School of Allied Health Sciences, University of Phayao, Phayao 56000, Thailand
| | - Thananya Jenchang
- Department of Physical Therapy, School of Allied Health Sciences, University of Phayao, Phayao 56000, Thailand
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157
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Bittmann FN, Dech S, Schaefer LV. How to Confuse Motor Control: Passive Muscle Shortening after Contraction in Lengthened Position Reduces the Muscular Holding Stability in the Sense of Adaptive Force. Life (Basel) 2023; 13:life13040911. [PMID: 37109439 PMCID: PMC10143964 DOI: 10.3390/life13040911] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/22/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023] Open
Abstract
Adaptation to external forces relies on a well-functioning proprioceptive system including muscle spindle afferents. Muscle length and tension control in reaction to external forces is most important regarding the Adaptive Force (AF). This study investigated the effect of different procedures, which are assumed to influence the function of muscle spindles, on the AF. Elbow flexors of 12 healthy participants (n = 19 limbs) were assessed by an objectified manual muscle test (MMT) with different procedures: regular MMT, MMT after precontraction (self-estimated 20% MVIC) in lengthened position with passive return to test position (CL), and MMT after CL with a second precontraction in test position (CL-CT). During regular MMTs, muscles maintained their length up to 99.7% ± 1.0% of the maximal AF (AFmax). After CL, muscles started to lengthen at 53.0% ± 22.5% of AFmax. For CL-CT, muscles were again able to maintain the static position up to 98.3% ± 5.5% of AFmax. AFisomax differed highly significantly between CL vs. CL-CT and regular MMT. CL was assumed to generate a slack of muscle spindles, which led to a substantial reduction of the holding capacity. This was immediately erased by a precontraction in the test position. The results substantiate that muscle spindle sensitivity seems to play an important role for neuromuscular functioning and musculoskeletal stability.
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Affiliation(s)
- Frank N. Bittmann
- Regulative Physiology and Prevention, Department Sports and Health Sciences, University of Potsdam, 14476 Potsdam, Germany
| | - Silas Dech
- Regulative Physiology and Prevention, Department Sports and Health Sciences, University of Potsdam, 14476 Potsdam, Germany
- Sports Education, Department Sports and Health Sciences, University of Potsdam, 14476 Potsdam, Germany
| | - Laura V. Schaefer
- Regulative Physiology and Prevention, Department Sports and Health Sciences, University of Potsdam, 14476 Potsdam, Germany
- Sports Education, Department Sports and Health Sciences, University of Potsdam, 14476 Potsdam, Germany
- Correspondence:
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158
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Jebreen M, Sole G, Arumugam A. Test-Retest Reliability of a Passive Joint Position Sense Test After
ACL Reconstruction: Influence of Direction, Target Angle, Limb, and Outcome
Measures. Orthop J Sports Med 2023; 11:23259671231157351. [PMID: 36970320 PMCID: PMC10034299 DOI: 10.1177/23259671231157351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 12/13/2022] [Indexed: 03/24/2023] Open
Abstract
Background: The joint position sense (JPS) is an element of proprioception and defined as
an individual’s ability to recognize joint position in space. The JPS is
assessed by measuring the acuity of reproducing a predetermined target
angle. The quality of psychometric properties of knee JPS tests after
anterior cruciate ligament reconstruction (ACLR) is uncertain. Purpose/Hypothesis: The purpose of this study was to evaluate the test-retest reliability of a
passive knee JPS test in patients who underwent ACLR. We hypothesized that
the passive JPS test would produce reliable absolute error, constant error,
and variable error estimates after ACLR. Study Design: Descriptive laboratory study. Methods: Nineteen male participants (mean age, 26.3 ± 4.4 years) who had undergone
unilateral ACLR within the previous 12 months completed 2 sessions of
bilateral passive knee JPS evaluation. JPS testing was conducted in both the
flexion (starting angle, 0°) and the extension (starting angle, 90°)
directions in the sitting position. The absolute error, constant error, and
variable error of the JPS test in both directions were calculated at 2
target angles (30° and 60° of flexion) by using the angle reproduction
method for the ipsilateral knee. The standard error of measurement (SEM),
smallest real difference (SRD), and intraclass correlation coefficients
(ICCs) with 95% Cis were calculated. Results: ICCs were higher for the JPS constant error (operated and nonoperated knee,
0.43-0.86 and 0.32-0.91, respectively) compared with the absolute error
(0.18-0.59 and 0.09-0.86, respectively) and the variable error (0.07-0.63
and 0.09-0.73, respectively). The constant error of the 90°-60° extension
test showed moderate to excellent reliability for the operated knee (ICC,
0.86 [95% CI, 0.64-0.94]; SEM, 1.63°; SRD, 4.53°), and good to excellent
reliability for the nonoperated knee (ICC, 0.91 [95% CI, 0.76-0.96]; SEM,
1.53°; SRD, 4.24°). Conclusion: The test-retest reliability of the passive knee JPS tests after ACLR varied
depending on the test angle, direction, and outcome measure (absolute error,
constant error, or variable error). The constant error appeared to be a more
reliable outcome measure than the absolute error and the variable error,
mainly during the 90°-60° extension test. Clinical Relevance: As constant errors have been found reliable during the 90°-60° extension
test, investigating these errors—in addition to absolute and variable
errors—to reflect bias in passive JPS scores after ACLR is warranted.
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Affiliation(s)
- Mustafa Jebreen
- Department of Physiotherapy, College of Health Sciences, University
of Sharjah, Sharjah, United Arab Emirates
- Physiotherapy and Rehabilitation Department, Sheikh Shakhbout
Medical City, Abu Dhabi, United Arab Emirates
| | - Gisela Sole
- Centre for Health, Activity and Rehabilitation Research, School of
Physiotherapy, University of Otago, Dunedin, New Zealand
| | - Ashokan Arumugam
- Department of Physiotherapy, College of Health Sciences, University
of Sharjah, Sharjah, United Arab Emirates
- Neuromusculoskeletal Rehabilitation Research Group, Research
Institute of Medical and Health Sciences, University of Sharjah, Sharjah, United
Arab Emirates
- Sustainable Engineering Asset Management Research Group, Research
Institute of Sciences and Engineering, University of Sharjah, Sharjah, United Arab
Emirates
- Department of Physiotherapy, Manipal College of Health Professions,
Manipal Academy of Higher Education, Manipal, Karnataka, India
- Ashokan Arumugam, MPT, PhD, Department of Physiotherapy, College
of Health Sciences, University of Sharjah, PO Box 27272, Sharjah, United Arab
Emirates (;
)
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159
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Marouvo J, Tavares N, Dias G, Castro MA. The Effect of Ice on Shoulder Proprioception in Badminton Athletes. Eur J Investig Health Psychol Educ 2023; 13:671-683. [PMID: 36975403 PMCID: PMC10047308 DOI: 10.3390/ejihpe13030051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/06/2023] [Accepted: 03/15/2023] [Indexed: 03/29/2023] Open
Abstract
This study aims to analyze the influence of the application of cryotherapy on shoulder proprioception in badminton athletes. Thirty federated badminton athletes were included in this study, all of whom belonged to three of the teams currently competing in national competitions (Portugal). Their mean ages were 21.00 ± 5.60 years, and their experience in the modality was 8.40 ± 6.93 years. They practiced in an average of 2.93 ± 1.26 training sessions per week. All of them used their right hand to hold the racket. Each participant's dominant shoulder joint position and force senses were evaluated for four consecutive time points through the isokinetic dynamometer Biodex System 3. The experimental procedure consisted of applying ice for 15 min and the control procedure consisted of no therapeutic intervention. The proprioception outcomes were expressed using the absolute error, relative error, and variable error. All statistical analysis was performed using PASW Statistics 18 software (IBM-SPSS Statistics). There were no statistically significant changes in the joint position and force senses after the intervention, as well as during the subsequent 30 min. We conclude that, after this cryotherapy technique, there is no increased risk of injury associated with a proprioception deficit that prevents athletes from immediately returning to badminton practice.
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Affiliation(s)
- Joel Marouvo
- RoboCorp, i2A, Polytechnic Institute of Coimbra, 3045-093 Coimbra, Portugal
- Centre for Mechanical Engineering, Materials and Processes (CEMMPRE), University of Coimbra, 3030-788 Coimbra, Portugal
| | - Nuno Tavares
- RoboCorp, i2A, Polytechnic Institute of Coimbra, 3045-093 Coimbra, Portugal
| | - Gonçalo Dias
- ESEC-UNICID-ASSERT, Instituto Politécnico de Coimbra, 3030-329 Coimbra, Portugal
- ROBOCORP, IIA, Instituto Politécnico de Coimbra, 3030-329 Coimbra, Portugal
- Faculty of Sport Sciences and Physical Education, University of Coimbra, 3040-256 Coimbra, Portugal
- CIDAF (UID/DTP/04213/2020), Universidade de Coimbra, 3040-248 Coimbra, Portugal
- Instituto de Telecomunicações, Delegação da Covilhã, 6201-001 Covilhã, Portugal
| | - Maria António Castro
- RoboCorp, i2A, Polytechnic Institute of Coimbra, 3045-093 Coimbra, Portugal
- Centre for Mechanical Engineering, Materials and Processes (CEMMPRE), University of Coimbra, 3030-788 Coimbra, Portugal
- Sector of Physiotherapy, School of Health Sciences, Polytechnic Institute of Leiria, 2411-901 Leiria, Portugal
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160
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Methenitis S, Theodorou AA, Chatzinikolaou PN, Margaritelis NV, Nikolaidis MG, Paschalis V. The effects of chronic concentric and eccentric training on position sense and joint reaction angle of the knee extensors. Eur J Sport Sci 2023:1-11. [PMID: 36815692 DOI: 10.1080/17461391.2023.2184726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
The aim of the present study was to compare the effect of chronic concentric or eccentric training on position sense and joint reaction angle, in healthy, untrained young men. Twenty-four men were randomly assigned into a pure concentric (CT) or a pure eccentric (ET) group and performed for 8 weeks, one training session/week, 75 maximal knee extensors contractions. Before and 48 h after the first (W1) and the last (W8) training sessions, knee joint position sense and joint reaction angle were assessed at three different knee angles (i.e. 30°, 45° and 60°). At the same time points, indirect indices of exercise-induced muscle damage (EIMD) were evaluated (i.e. range of motion [ROM], optimal angle, maximum isometric, concentric and eccentric torques, delayed onset muscle soreness [DOMS] and blood creatine kinase concentrations [CK]). Forty-eight hours post W1, position sense, reaction angle and all EIMD indices were significantly changed for both groups (p < 0.05; η2: 0.125-0.618), however, greater alterations were observed after ET. Significant correlations were found, in both groups, between the training-induced changes of position sense, reaction angles and the changes of EIMD biomarkers (r: -0.855-0.825; p < 0.005). No significant changes were found 48 h post W8 for position sense, reaction angle and EIMD indices (p > 0.285) for both CT or ET groups. In conclusion, exercise-induced changes in position sense and reaction angle, were related to the magnitude of EIMD, and not by the type of muscle contraction per se. HighlightsExercise induced changes in position sense and reaction angle, were related to the magnitude of EIMD, and not by the type of muscle contraction per se.After the 1st training session eccentric exercise caused greater disturbances, compared to concentric exercise, in EIMD indices which caused concomitant disturbances to position sense and knee reaction angle.8 weeks of either eccentric or concentric training leads to preservation of position sense and knee reaction angle 48 h after maximal intensity exercise of either types of muscle contraction.
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Affiliation(s)
- S Methenitis
- School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece.,Theseus, Physical Medicine and Rehabilitation Center, Athens, Greece
| | - A A Theodorou
- Department of Life Sciences, School of Sciences, European University, Nicosia, Cyprus
| | - P N Chatzinikolaou
- Department of Physical Education and Sport Science at Serres, Aristotle, University of Thessaloniki, Thessaloniki, Greece
| | - N V Margaritelis
- Department of Physical Education and Sport Science at Serres, Aristotle, University of Thessaloniki, Thessaloniki, Greece
| | - M G Nikolaidis
- Department of Physical Education and Sport Science at Serres, Aristotle, University of Thessaloniki, Thessaloniki, Greece
| | - V Paschalis
- School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece
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161
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Symbiotic electroneural and musculoskeletal framework to encode proprioception via neurostimulation: ProprioStim. iScience 2023; 26:106248. [PMID: 36923003 PMCID: PMC10009292 DOI: 10.1016/j.isci.2023.106248] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/23/2022] [Accepted: 02/16/2023] [Indexed: 02/23/2023] Open
Abstract
Peripheral nerve stimulation in amputees achieved the restoration of touch, but not proprioception, which is critical in locomotion. A plausible reason is the lack of means to artificially replicate the complex activity of proprioceptors. To uncover this, we coupled neuromuscular models from ten subjects and nerve histologies from two implanted amputees to develop ProprioStim: a framework to encode proprioception by electrical evoking neural activity in close agreement with natural proprioceptive activity. We demonstrated its feasibility through non-invasive stimulation on seven healthy subjects comparing it with standard linear charge encoding. Results showed that ProprioStim multichannel stimulation was felt more natural, and hold promises for increasing accuracy in knee angle tracking, especially in future implantable solutions. Additionally, we quantified the importance of realistic 3D-nerve models against extruded models previously adopted for further design and validation of novel neurostimulation encoding strategies. ProprioStim provides clear guidelines for the development of neurostimulation policies restoring natural proprioception.
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162
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Albanese GA, Marini F, Morasso P, Campus C, Zenzeri J. μ-band desynchronization in the contralateral central and central-parietal areas predicts proprioceptive acuity. Front Hum Neurosci 2023; 17:1000832. [PMID: 37007684 PMCID: PMC10050694 DOI: 10.3389/fnhum.2023.1000832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 02/28/2023] [Indexed: 03/17/2023] Open
Abstract
IntroductionPosition sense, which belongs to the sensory stream called proprioception, is pivotal for proper movement execution. Its comprehensive understanding is needed to fill existing knowledge gaps in human physiology, motor control, neurorehabilitation, and prosthetics. Although numerous studies have focused on different aspects of proprioception in humans, what has not been fully investigated so far are the neural correlates of proprioceptive acuity at the joints.MethodsHere, we implemented a robot-based position sense test to elucidate the correlation between patterns of neural activity and the degree of accuracy and precision exhibited by the subjects. Eighteen healthy participants performed the test, and their electroencephalographic (EEG) activity was analyzed in its μ band (8–12 Hz), as the frequency band related to voluntary movement and somatosensory stimulation.ResultsWe observed a significant positive correlation between the matching error, representing proprioceptive acuity, and the strength of the activation in contralateral hand motor and sensorimotor areas (left central and central-parietal areas). In absence of visual feedback, these same regions of interest (ROIs) presented a higher activation level compared to the association and visual areas. Remarkably, central and central-parietal activation was still observed when visual feedback was added, although a consistent activation in association and visual areas came up.ConclusionSumming up, this study supports the existence of a specific link between the magnitude of activation of motor and sensorimotor areas related to upper limb proprioceptive processing and the proprioceptive acuity at the joints.
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Affiliation(s)
- Giulia Aurora Albanese
- Department of Robotics, Brain and Cognitive Sciences, Fondazione Istituto Italiano di Tecnologia, Genoa, Italy
- Department of Informatics, Bioengineering, Robotics and Systems Engineering (DIBRIS), University of Genoa, Genoa, Italy
- *Correspondence: Giulia Aurora Albanese,
| | | | - Pietro Morasso
- Department of Robotics, Brain and Cognitive Sciences, Fondazione Istituto Italiano di Tecnologia, Genoa, Italy
| | - Claudio Campus
- U-VIP Unit for Visually Impaired People, Istituto Italiano di Tecnologia, Genoa, Italy
| | - Jacopo Zenzeri
- Department of Robotics, Brain and Cognitive Sciences, Fondazione Istituto Italiano di Tecnologia, Genoa, Italy
- ReWing S.r.l., Milan, Italy
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Özüdoğru A, Canlı M, Kuzu Ş, Aslan M, Ceylan İ, Alkan H. Muscle strength, balance and upper extremity function are not predictors of cervical proprioception in healthy young subjects. Somatosens Mot Res 2023; 40:78-82. [PMID: 36877602 DOI: 10.1080/08990220.2023.2183832] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
Purpose/Aim: The aim of this study is to examine the relationship between cervical proprioception sense and balance, hand grip strength, cervical region muscle strength and upper extremity functionality in healthy young subjects.Methods: A total of 200 people with a mean age of 20.8 ± 1.8 participated in the study. Cervical proprioception sense of the participants was evaluated with Cervical Joint Position Error Test (CJPET), balance with Biodex Stability System, hand grip strength with hand dynamometer, and upper extremity functionality with Perdue Pegboard test. The relationship of variables with cervical proprioception was evaluated with Pearson Correlation analysis.Results: According to this study results, there was no significant relationship between CJPET (extension, left rotation, right rotation) and sub-parameters of dynamic balance (anteroposterior, mediolateral, overall), cervical muscle strength and hand grip strength (p > 0.05). There was a significant correlation between CJPET flexion and static balance variables (p < 0.05).Conclusion: According to this study, there is no relationship between cervical proprioception and balance, hand grip muscle strength, cervical region muscle strength and upper extremity functionality in healthy young subjects.
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Affiliation(s)
- Anıl Özüdoğru
- School of Physical Therapy and Rehabilitation, Kırşehir Ahi Evran University, Kırşehir, Turkey
| | - Mehmet Canlı
- School of Physical Therapy and Rehabilitation, Kırşehir Ahi Evran University, Kırşehir, Turkey
| | - Şafak Kuzu
- School of Physical Therapy and Rehabilitation, Kırşehir Ahi Evran University, Kırşehir, Turkey
| | - Mensure Aslan
- School of Physical Therapy and Rehabilitation, Kırşehir Ahi Evran University, Kırşehir, Turkey
| | - İsmail Ceylan
- School of Physical Therapy and Rehabilitation, Kırşehir Ahi Evran University, Kırşehir, Turkey
| | - Halil Alkan
- Department of Physiotherapy and Rehabilitation, Muş Alparslan University, Muş, Turkey
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A reassessment of the role of joint receptors in human position sense. Exp Brain Res 2023; 241:943-949. [PMID: 36869268 PMCID: PMC10082099 DOI: 10.1007/s00221-023-06582-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 02/22/2023] [Indexed: 03/05/2023]
Abstract
In the past, the peripheral sense organs responsible for generating human position sense were thought to be the slowly adapting receptors in joints. More recently, our views have changed and the principal position sensor is now believed to be the muscle spindle. Joint receptors have been relegated to the lesser role of acting as limit detectors when movements approach the anatomical limit of a joint. In a recent experiment concerned with position sense at the elbow joint, measured in a pointing task over a range of forearm angles, we have observed falls in position errors as the forearm was moved closer to the limit of extension. We considered the possibility that as the arm approached full extension, a population of joint receptors became engaged and that they were responsible for the changes in position errors. Muscle vibration selectively engages signals of muscle spindles. Vibration of elbow muscles undergoing stretch has been reported to lead to perception of elbow angles beyond the anatomical limit of the joint. The result suggests that spindles, by themselves, cannot signal the limit of joint movement. We hypothesise that over the portion of the elbow angle range where joint receptors become active, their signals are combined with those of spindles to produce a composite that contains joint limit information. As the arm is extended, the growing influence of the joint receptor signal is evidenced by the fall in position errors.
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Romero LO, Caires R, Kaitlyn Victor A, Ramirez J, Sierra-Valdez FJ, Walsh P, Truong V, Lee J, Mayor U, Reiter LT, Vásquez V, Cordero-Morales JF. Linoleic acid improves PIEZO2 dysfunction in a mouse model of Angelman Syndrome. Nat Commun 2023; 14:1167. [PMID: 36859399 PMCID: PMC9977963 DOI: 10.1038/s41467-023-36818-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 02/17/2023] [Indexed: 03/03/2023] Open
Abstract
Angelman syndrome (AS) is a neurogenetic disorder characterized by intellectual disability and atypical behaviors. AS results from loss of expression of the E3 ubiquitin-protein ligase UBE3A from the maternal allele in neurons. Individuals with AS display impaired coordination, poor balance, and gait ataxia. PIEZO2 is a mechanosensitive ion channel essential for coordination and balance. Here, we report that PIEZO2 activity is reduced in Ube3a deficient male and female mouse sensory neurons, a human Merkel cell carcinoma cell line and female human iPSC-derived sensory neurons with UBE3A knock-down, and de-identified stem cell-derived neurons from individuals with AS. We find that loss of UBE3A decreases actin filaments and reduces PIEZO2 expression and function. A linoleic acid (LA)-enriched diet increases PIEZO2 activity, mechano-excitability, and improves gait in male AS mice. Finally, LA supplementation increases PIEZO2 function in stem cell-derived neurons from individuals with AS. We propose a mechanism whereby loss of UBE3A expression reduces PIEZO2 function and identified a fatty acid that enhances channel activity and ameliorates AS-associated mechano-sensory deficits.
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Affiliation(s)
- Luis O Romero
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, 38103, USA
- Integrated Biomedical Sciences Graduate Program, College of Graduate Health Sciences, Memphis, TN, 38163, USA
| | - Rebeca Caires
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, 38103, USA
| | - A Kaitlyn Victor
- Department of Neurology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, 38103, USA
| | - Juanma Ramirez
- Department of Biochemistry and Molecular Biology, Faculty of Science and Technology, UPV/EHU, Leioa, Bizkaia, Spain
| | - Francisco J Sierra-Valdez
- School of Engineering and Sciences, Tecnológico de Monterrey, Ave. Eugenio Garza Sada 2501 Sur, Monterrey, 64849, Mexico
| | | | | | - Jungsoo Lee
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, 38103, USA
| | - Ugo Mayor
- Department of Biochemistry and Molecular Biology, Faculty of Science and Technology, UPV/EHU, Leioa, Bizkaia, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, Bizkaia, Spain
| | - Lawrence T Reiter
- Department of Neurology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, 38103, USA
- Department of Anatomy and Neurobiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, 38104, USA
- Department of Pediatrics, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, 38104, USA
| | - Valeria Vásquez
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, 38103, USA.
| | - Julio F Cordero-Morales
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, 38103, USA.
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Majcen Rosker Z, Kristjansson E, Vodicar M. How well can we detect cervical driven sensorimotor dysfunction in concussion patients? An observational study comparing patients with idiopathic neck pain, whiplash associated disorders and concussion. Gait Posture 2023; 101:21-27. [PMID: 36701850 DOI: 10.1016/j.gaitpost.2023.01.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 12/21/2022] [Accepted: 01/16/2023] [Indexed: 01/18/2023]
Abstract
BACKGROUND Patients with mild traumatic brain injury (mTBI) suffer from sensorimotor impairments. Evidence is emerging that cervical spine plays an important role in mTBI, but it is not known how cervicocephalic kinaesthetic sensibility measured during dynamic unpredictable head movements and measures of position sense, cervical induced postural balance and eye movement control differ between mTBI, whiplash associated disorders (WAD) patients, idiopathic neck pain patients and healthy controls. RESEARCH QUESTION Are cervical sensorimotor deficits present in mTBI patients and do they differ from sensorimotor deficits found in traumatic and nontraumatic neck pain patients and whether they differ from healthy controls. METHODS Twenty idiopathic neck pain patients, 18 WAD, 17 mTBI and 20 healthy controls were enroled in the study. Frequency and velocity of centre of pressure movements were measured during parallel stance in the neutral and neck torsion positions, gain and smooth pursuit neck torsion difference of eye movements during smooth pursuit neck torsion test (SPNTT) and cervicocephalic kinaesthesia using Butterfly and head-to-neutral relocation test. RESULTS Statistically significant differences in postural balance, both tests of cervicocephalic kinaesthesia and SPNTT were observed between healthy controls and all patient groups. No differences were observed between patient groups for SPNTT, Butterfly and head-to-neutral relocation test, but differences were present in postural balance between mTBI and both groups of patients with neck pain disorders. Differences were found in the ML direction for mTBI, but not differences were found for AP direction. SIGNIFICANCE Results of our study show that mTBI present with similar impairment in cervical driven sensorimotor deficits as patients with neck pain disorders, but they differ from healthy individuals. Clinical practice would benefit from identifying cervical spine related sensorimotor impairments in patients with mTBI. This could enable to design more targeted prevention and rehabilitation programs to minimise cervical spine related disorders in concussion patients.
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Affiliation(s)
- Ziva Majcen Rosker
- Faculty of Sport, University of Ljubljana, Gortanova 22, SI-1000 Ljubljana, Slovenia.
| | | | - Miha Vodicar
- Department of Orthopaedic Surgery, University Medical Centre Ljubljana, Slovenia
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Horváth Á, Ferentzi E, Schwartz K, Jacobs N, Meyns P, Köteles F. The measurement of proprioceptive accuracy: A systematic literature review. JOURNAL OF SPORT AND HEALTH SCIENCE 2023; 12:219-225. [PMID: 35390537 PMCID: PMC10105016 DOI: 10.1016/j.jshs.2022.04.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 01/19/2022] [Accepted: 02/18/2022] [Indexed: 06/01/2023]
Abstract
BACKGROUND Proprioceptive accuracy refers to the individual's ability to perceive proprioceptive information, that is, the information referring to the actual state of the locomotor system, which originates from mechanoreceptors located in various parts of the locomotor system and from tactile receptors located in the skin. Proprioceptive accuracy appears to be an important aspect in the evaluation of sensorimotor functioning; however, no widely accepted standard assessment exists. In this systematic review, our goal was to identify and categorize different methods that are used to assess different aspects of proprioceptive accuracy. METHODS A literature search was conducted in 5 different databases (PubMed, SPORTDiscus, PsycINFO, ScienceDirect, and SpringerLink). RESULTS Overall, 1139 scientific papers reporting 1346 methods were included in this review. The methods assess 8 different aspects of proprioception: (a) the perception of joint position, (b) movement and movement extent, (c) trajectory, (d) velocity, and the sense of (e) force, (f) muscle tension, (g) weight, and (h) size. They apply various paradigms of psychophysics (i.e., the method of adjustment, constant stimuli, and limits). CONCLUSION As the outcomes of different tasks with respect to various body parts show no associations (i.e., proprioceptive accuracy is characterized by site-specificity and method-specificity), the appropriate measurement method for the task needs to be chosen based on theoretical considerations and/or ecological validity.
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Affiliation(s)
- Áron Horváth
- Doctoral School of Psychology, ELTE Eötvös Loránd University, Kazinczy street 23-27, Budapest 1075, Hungary; Institute of Health Promotion and Sport Sciences, ELTE Eötvös Loránd University, Prielle Kornélia Street 47-49, Budapest 1117, Hungary.
| | - Eszter Ferentzi
- Institute of Health Promotion and Sport Sciences, ELTE Eötvös Loránd University, Prielle Kornélia Street 47-49, Budapest 1117, Hungary
| | - Kristóf Schwartz
- Doctoral School of Psychology, ELTE Eötvös Loránd University, Kazinczy street 23-27, Budapest 1075, Hungary; Institute of Health Promotion and Sport Sciences, ELTE Eötvös Loránd University, Prielle Kornélia Street 47-49, Budapest 1117, Hungary
| | - Nina Jacobs
- Rehabilitation Research (REVAL), Faculty of Rehabilitation Sciences, University of Hasselt, Martelarenlaan 42, Hasselt 3500, Belgium
| | - Pieter Meyns
- Rehabilitation Research (REVAL), Faculty of Rehabilitation Sciences, University of Hasselt, Martelarenlaan 42, Hasselt 3500, Belgium
| | - Ferenc Köteles
- Institute of Health Promotion and Sport Sciences, ELTE Eötvös Loránd University, Prielle Kornélia Street 47-49, Budapest 1117, Hungary
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Lynn J, Wolf A, Bridges T, Pottanat Z, Spivey S, Rolin O. Effects of stochastic resonance stimulation on manual function in children with hemiplegic cerebral palsy: A pilot clinical trial. PM R 2023; 15:302-313. [PMID: 35187840 DOI: 10.1002/pmrj.12788] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 12/23/2021] [Accepted: 01/14/2022] [Indexed: 11/07/2022]
Abstract
OBJECTIVE To investigate the effect of stochastic resonance stimulation (SRS) on manual abilities in children with hemiplegic cerebral palsy. DESIGN This pilot study is a randomized, sham-controlled, one-period, crossover trial. SETTING A neuroscience clinic with specialty therapy programs at an urban, university-based children's hospital. PARTICIPANTS Sixteen children ages 3 to 16 years who were diagnosed with hemiplegic cerebral palsy and had hand Manual Abilities Classification scale score of I to III with sufficient cognitive abilities to follow instructions. INTERVENTIONS Children donned wrist and arm bands that delivered SRS via embedded piezoelectric actuators in two randomly assigned conditions: sham (devices powered off) and subthreshold stimulation (SBT-SRS). Following the randomized protocol, a subset of participants also completed an open-label, above-threshold stimulation (AT-SRS) condition. Children carried out the same uni-manual and bimanual tasks during the randomized and open-label protocols; all data were collected in a single session. MAIN OUTCOME MEASURE(S) Box and Blocks (B&B) test, a uni-manual function test, and the Shriners Hospital Upper Extremity Evaluation (SHUEE). The SHUEE was video recorded and scored by two raters who were blinded to the experimental condition. RESULTS Thirteen children completed the B&B task and 14 children completed the SHUEE. Children in the SBT-SRS condition relative to sham condition moved an average of 1.8 more blocks in 1 minute (p = .08); scored an average of 3 points higher on SHUEE spontaneous functional analysis (p < .002); and scored an average of 2.7 points higher on SHUEE dynamic positional analysis (p = .20). In the open-label protocol, children in the AT-SRS condition relative to sham moved 3.9 more blocks than in the sham condition (n = 8, p < .001); scored an average of 4.5 points higher on SHUEE spontaneous functional analysis (n = 6, p = .08); and scored an average of 10.5 points higher on SHUEE dynamic positional analysis (n = 6, p = .01). CONCLUSION(S) In this pilot study, we found preliminary evidence that children with hemiplegic cerebral palsy demonstrated improved uni-manual abilities and increased function of the impaired hand on bimanual tasks when receiving a single session of SBT-SRS. Preliminary evidence also suggests that some children with hemiplegic cerebral palsy may improve more when receiving a single session of AT-SRS. Future research using larger, controlled studies should evaluate the optimal intensity, duration, and long-term effect of SRS for improving impaired manual abilities.
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Affiliation(s)
- Jessica Lynn
- Occupational Therapist: Children's Hospital of Richmond at VCU, Richmond, Virginia, USA
| | - Allison Wolf
- Occupational Therapist: Children's Hospital of Richmond at VCU, Richmond, Virginia, USA
| | - Travis Bridges
- Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University Health Systems, Richmond, Virginia, USA
| | - Zachary Pottanat
- Department of Pediatrics, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
| | - Suzanne Spivey
- Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University Health Systems, Richmond, Virginia, USA
| | - Olivier Rolin
- Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University Health Systems, Children's Hospital of Richmond, Richmond, Virginia, USA
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169
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Labarrade F, Botto JM, Imbert I. Co-culture of iNeurons with primary human skin cells provides a reliable model to examine intercellular communication. J Cosmet Dermatol 2023. [PMID: 36847702 DOI: 10.1111/jocd.15675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/30/2022] [Accepted: 01/27/2023] [Indexed: 03/01/2023]
Abstract
OBJECTIVE The skin is a sensory organ, densely innervated with various types of sensory nerve endings, capable of discriminating touch, environmental sensations, proprioception, and physical affection. Neurons communication with skin cells confer to the tissue the ability to undergo adaptive modifications during response to environmental changes or wound healing after injury. Thought for a long time to be dedicated to the central nervous system, the glutamatergic neuromodulation is increasingly described in peripheral tissues. Glutamate receptors and transporters have been identified in the skin. There is a strong interest in understanding the communication between keratinocytes and neurons, as the close contacts with intra-epidermal nerve fibers is a favorable site for efficient communication. To date, various coculture models have been described. However, these models were based on non-human or immortalized cell line. Even the use of induced pluripotent stem cells (iPSCs) is posing limitations because of epigenetic variations during the reprogramming process. METHODS In this study, we performed small molecule-driven direct conversion of human skin primary fibroblasts into induced neurons (iNeurons). RESULTS The resulting iNeurons were mature, showed pan-neuronal markers, and exhibited a glutamatergic subtype and C-type fibers characteristics. Autologous coculture of iNeurons with human primary keratinocytes, fibroblasts, and melanocytes was performed and remained healthy for many days, making possible to study the establishment of intercellular interactions. CONCLUSION Here, we report that iNeurons and primary skin cells established contacts, with neurite ensheathment by keratinocytes, and demonstrated that iNeurons cocultured with primary skin cells provide a reliable model to examine intercellular communication.
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Darling WG, Yem J. Acuity of Proprioceptive Localization Varies with Body Region. Neuroscience 2023; 516:100-112. [PMID: 36841275 DOI: 10.1016/j.neuroscience.2023.02.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 02/15/2023] [Accepted: 02/20/2023] [Indexed: 02/26/2023]
Abstract
We accurately sense locations of objects touching various points on the body and, if they are irritants, make accurate rapid movements to remove them. Such movements require accurate proprioception of orientation and motion of the reaching limb and of the target. However, it is unknown whether acuity of these sensations is similar for different points on the body. We investigated accuracy of comfortable speed reaching movements of the right index-tip by 10 subjects (five females) to touch 12 different body locations with and without vision with the body part stationary in different locations and moving in different directions. Reaching movements to points on the face/head and trunk had mean errors averaging less than 0.2 cm greater than under vision conditions. Mean errors for reaches to touch points on the left arm and digits were less accurate (p < 0.05), but average less than 1 cm relative to vision conditions. Mean errors for reaches to touch points on the left lower limb were least accurate (p < 0.05), with mean errors averaging 1.5-3.1 cm relative to movements made with vision. We conclude that there is high proprioceptive acuity for locations of points on axial structures and the left upper limb including the digits, which contrasts with previous reports of greatly distorted proprioceptive maps of the face/head and hand. Apparently low proprioceptive acuity for points on the leg may be task sensitive as many lower limb motor tasks can be performed accurately without vision.
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Affiliation(s)
- Warren G Darling
- Department of Health and Human Physiology, Motor Control Laboratory, University of Iowa, 225 S Grand Ave, Iowa City, IA 52242, United States.
| | - Joshua Yem
- Department of Health and Human Physiology, Motor Control Laboratory, University of Iowa, 225 S Grand Ave, Iowa City, IA 52242, United States
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Mann S, Spiric J, Mitchell C, Hilgenkamp TIM. Development of a Physical Therapy-Based Exercise Program for Adults with Down Syndrome. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:3667. [PMID: 36834362 PMCID: PMC9960831 DOI: 10.3390/ijerph20043667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/09/2023] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
In adults with Down syndrome, the combination of low physical activity and fitness levels and the high prevalence of musculoskeletal co-morbidities stresses the need for specialized exercise programs. The goal of this research study was to develop a specialized exercise program for individuals with Down syndrome using the physical therapy approach of a systems review as the foundation. We first conducted an overview of the literature on co-morbidities in adults with Down syndrome using the systems review method to categorize these findings. We extracted recommendations for content and delivery of an exercise program based on the literature review, and finally composed a specialized exercise program for individuals with Down syndrome adhering to these recommendations.
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Affiliation(s)
- Sarah Mann
- Mann Method PT and Fitness, Arvada, CO 80005, USA
| | | | - Cailin Mitchell
- Department of Physical Therapy, University of Nevada, Las Vegas, NV 89154, USA
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Bonafede C, van der Merwe E. Kinesthetic Coordination Abilities in 6-Year-Old Children: School Quintile, Gender, and Hand Dominance Differences. INTERNATIONAL JOURNAL OF EARLY CHILDHOOD = REVUE INTERNATIONALE DE L'ENFANCE PRESCOLAIRE = REVISTA INTERNACIONAL DE LA INFANCIA PRE-ESCOLAR 2023:1-19. [PMID: 36844145 PMCID: PMC9937861 DOI: 10.1007/s13158-023-00350-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/24/2023] [Indexed: 06/18/2023]
Abstract
Proprioceptive kinaesthetic control underpins motor movements of developing children and can be influenced by several factors. The main aim of this study was to establish proprioceptive kinaesthetic coordination differences in six-year-olds from different school quintiles, of different genders, and with different handedness. A total of 193 six-year-olds from 10 schools of different quintiles in the Motheo District, Mangaung, were included, of which 97 (50.3%) were boys and 96 (49.7%) were girls. A quantitative cross-sectional study design was followed to determine proprioceptive kinaesthetic coordination differences. Right-handed participants performed significantly better than left-handed participants in the Finger-to-Nose task (p = 0.0125) when moving and positioning their dominant arm and hand. When using their dominant arm, significant differences in the shoulder-level-arm-raise (p = 0.0288) favoured boys. Girls showed superior execution of the force perception task (p = 0.0322). In conclusion, significant proprioceptive kinaesthetic coordination differences in six-year-olds were mainly not evident. Future work should explore proprioceptive kinaesthetic coordination differences in children of other ages and determine the practical implications of identified differences.
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Affiliation(s)
- Carmen Bonafede
- Department of Exercise & Sport Sciences, School of Health and Rehabilitation Sciences, Faculty of Health Sciences, University of the Free State, 205 Nelson Mandela Drive, Park West, Bloemfontein, 9301 Free State South Africa
| | - Elna van der Merwe
- Department of Exercise & Sport Sciences, School of Health and Rehabilitation Sciences, Faculty of Health Sciences, University of the Free State, 205 Nelson Mandela Drive, Park West, Bloemfontein, 9301 Free State South Africa
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173
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Abstract
The generation of an internal body model and its continuous update is essential in sensorimotor control. Although known to rely on proprioceptive sensory feedback, the underlying mechanism that transforms this sensory feedback into a dynamic body percept remains poorly understood. However, advances in the development of genetic tools for proprioceptive circuit elements, including the sensory receptors, are beginning to offer new and unprecedented leverage to dissect the central pathways responsible for proprioceptive encoding. Simultaneously, new data derived through emerging bionic neural machine-interface technologies reveal clues regarding the relative importance of kinesthetic sensory feedback and insights into the functional proprioceptive substrates that underlie natural motor behaviors.
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Affiliation(s)
- Paul D Marasco
- Laboratory for Bionic Integration, Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA;
- Charles Shor Epilepsy Center, Cleveland Clinic, Cleveland, Ohio, USA
- Advanced Platform Technology Center, Louis Stokes Cleveland Department of Veterans Affairs Medical Center, Cleveland, Ohio, USA
| | - Joriene C de Nooij
- Department of Neurology and the Columbia University Motor Neuron Center, Columbia University Medical Center, New York, NY, USA;
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Marotta N, Moggio L, Calafiore D, Prestifilippo E, Spanó R, Tasselli A, Drago Ferrante V, Invernizzi M, de Sire A, Ammendolia A. Efficacy of Proprioceptive Training on Plantar Pressure and Jump Performance in Volleyball Players: A Proof-of-Principle Study. SENSORS (BASEL, SWITZERLAND) 2023; 23:1906. [PMID: 36850501 PMCID: PMC9963449 DOI: 10.3390/s23041906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/03/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Volleyball players are often subject to micro-traumatisms of the heel fat pad and ankle injuries. Recently, mat-based proprioceptive training has assumed a key role in recovery from these disorders. Therefore, this proof-of-principle study aimed to assess the efficacy of proprioceptive mat training on plantar pressures and athletic performance in volleyball players. The participants included adult semi-professional volleyball players allocated into two groups: an experimental group, with mat-based proprioceptive and balance training, and a control group, with a sham protocol. For the outcome, we evaluated the barefoot plantar pressure, performing an analysis on a baropodometric resistive platform. The countermovement jump and squat jump were measured using an inertial measurement unit. Nineteen subjects were included in the two groups: the active proprioceptive group (n = 10) or the control group (n = 9). The results show a more uniform redistribution of loads with pressure hindfoot relief in the experimental group compared to the control group (p = 0.021, RBC = 0.67). Moreover, we observed a significant increase in peak landing force and high concentric power development in the experimental group compared to the controls. Focused proprioceptive management provided hindfoot load attenuation by stimulating higher peaks of concentric force in the experimental group compared to the sham group. Even though the study included a small sample, the results obtained in this proof-of-principle study suggest a positive role of proprioceptive stimulation in the inter-seasonal scenario for volleyball players to improve their jump performance and reduce the micro-traumatisms of the heel fat pad and the ankle injury rate. However, further studies performed on larger samples are needed to confirm these preliminary results.
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Affiliation(s)
- Nicola Marotta
- Department of Medical and Surgical Sciences, University of Catanzaro “Magna Graecia”, 88100 Catanzaro, Italy
| | - Lucrezia Moggio
- Department of Medical and Surgical Sciences, University of Catanzaro “Magna Graecia”, 88100 Catanzaro, Italy
- Rehabilitation Unit, Ospedale degli Infermi, 13875 Biella, Italy
| | - Dario Calafiore
- Physical Medicine and Rehabilitation Unit, Department of Neurosciences, ASST Carlo Poma, 46100 Mantova, Italy
| | - Emanuele Prestifilippo
- Department of Medical and Surgical Sciences, University of Catanzaro “Magna Graecia”, 88100 Catanzaro, Italy
| | - Riccardo Spanó
- Department of Medical and Surgical Sciences, University of Catanzaro “Magna Graecia”, 88100 Catanzaro, Italy
| | - Anna Tasselli
- Department of Medical and Surgical Sciences, University of Catanzaro “Magna Graecia”, 88100 Catanzaro, Italy
| | - Vera Drago Ferrante
- Department of Medical and Surgical Sciences, University of Catanzaro “Magna Graecia”, 88100 Catanzaro, Italy
| | - Marco Invernizzi
- Physical and Rehabilitative Medicine, Department of Health Sciences, University of Eastern Piedmont “A. Avogadro”, 28100 Novara, Italy
- Translational Medicine, Dipartimento Attività Integrate Ricerca e Innovazione (DAIRI), Azienda Ospedaliera SS. Antonio e Biagio e Cesare Arrigo, 15121 Alessandria, Italy
| | - Alessandro de Sire
- Department of Medical and Surgical Sciences, University of Catanzaro “Magna Graecia”, 88100 Catanzaro, Italy
| | - Antonio Ammendolia
- Department of Medical and Surgical Sciences, University of Catanzaro “Magna Graecia”, 88100 Catanzaro, Italy
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175
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Da Silva F, Monjo F, Gioda J, Blain GM, Piponnier E, Corcelle B, Colson SS. Knee position sense and knee flexor neuromuscular function are similarly altered after two submaximal eccentric bouts. Eur J Appl Physiol 2023; 123:311-323. [PMID: 36273044 DOI: 10.1007/s00421-022-05063-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/30/2022] [Indexed: 02/07/2023]
Abstract
PURPOSE This study examined eccentric-induced fatigue effects on knee flexor (KF) neuromuscular function and on knee position sense. This design was repeated across two experimental sessions performed 1 week apart to investigate potential repeated bout effects. METHODS Sixteen participants performed two submaximal bouts of KF unilateral eccentric contractions until reaching a 20% decrease in maximal voluntary isometric contraction force. Knee position sense was evaluated with position-matching tasks in seated and prone positions at 40° and 70° of knee flexion so that KF were either antagonistic or agonistic during the positioning movement. The twitch interpolation technique was used to assess KF neuromuscular fatigue. Perceived muscle soreness was also assessed. Measurements were performed before, immediately (POST) and 24 h after (POST24) each eccentric bout. RESULTS No repeated bout effect on neuromuscular function and proprioceptive parameters was observed. At POST, central and peripheral factors contributed to the force decrement as shown by significant decreases in voluntary activation level (- 3.8 ± 4.8%, p < 0.01) and potentiated doublet torque at 100 Hz (- 10 ± 15.8%, p < 0.01). At this time point, position-matching errors significantly increased by 1.7 ± 1.9° in seated position at 40° (p < 0.01). At POST24, in presence of muscle soreness (p < 0.05), although KF neuromuscular function had recovered, position-matching errors increased by 0.6 ± 2.6° in prone position at 40° (p < 0.01). CONCLUSION These results provide evidence that eccentric-induced position sense alterations may arise from central and/or peripheral mechanisms depending on the testing position.
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Affiliation(s)
- Flavio Da Silva
- Laboratoire Motricité Humaine Expertise Sport Santé (UPR 6312), Ecole Universitaire de Recherche HEALTHY: Ecosystèmes des Sciences de la Santé, Université Côte d'Azur, Campus STAPS-Sciences du Sport, 261, Boulevard du Mercantour, 06205, Nice Cedex 03, France.
| | - Florian Monjo
- Laboratoire Motricité Humaine Expertise Sport Santé (UPR 6312), Ecole Universitaire de Recherche HEALTHY: Ecosystèmes des Sciences de la Santé, Université Côte d'Azur, Campus STAPS-Sciences du Sport, 261, Boulevard du Mercantour, 06205, Nice Cedex 03, France
| | - Jennifer Gioda
- Laboratoire Motricité Humaine Expertise Sport Santé (UPR 6312), Ecole Universitaire de Recherche HEALTHY: Ecosystèmes des Sciences de la Santé, Université Côte d'Azur, Campus STAPS-Sciences du Sport, 261, Boulevard du Mercantour, 06205, Nice Cedex 03, France
| | - Gregory M Blain
- Laboratoire Motricité Humaine Expertise Sport Santé (UPR 6312), Ecole Universitaire de Recherche HEALTHY: Ecosystèmes des Sciences de la Santé, Université Côte d'Azur, Campus STAPS-Sciences du Sport, 261, Boulevard du Mercantour, 06205, Nice Cedex 03, France
| | - Enzo Piponnier
- Laboratoire Motricité Humaine Expertise Sport Santé (UPR 6312), Ecole Universitaire de Recherche HEALTHY: Ecosystèmes des Sciences de la Santé, Université Côte d'Azur, Campus STAPS-Sciences du Sport, 261, Boulevard du Mercantour, 06205, Nice Cedex 03, France
| | - Baptiste Corcelle
- Laboratoire Motricité Humaine Expertise Sport Santé (UPR 6312), Ecole Universitaire de Recherche HEALTHY: Ecosystèmes des Sciences de la Santé, Université Côte d'Azur, Campus STAPS-Sciences du Sport, 261, Boulevard du Mercantour, 06205, Nice Cedex 03, France
| | - Serge S Colson
- Laboratoire Motricité Humaine Expertise Sport Santé (UPR 6312), Ecole Universitaire de Recherche HEALTHY: Ecosystèmes des Sciences de la Santé, Université Côte d'Azur, Campus STAPS-Sciences du Sport, 261, Boulevard du Mercantour, 06205, Nice Cedex 03, France
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176
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Oliwa A, Hendson G, Longman C, Synnes A, Seath K, Barnicoat A, Hall JG, Patel MS. Lethal respiratory course and additional features expand the phenotypic spectrum of PIEZO2-related distal arthrogryposis type 5. Am J Med Genet A 2023; 191:546-553. [PMID: 36317804 DOI: 10.1002/ajmg.a.63019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 09/14/2022] [Accepted: 09/20/2022] [Indexed: 11/06/2022]
Abstract
Distal arthrogryposes (DA) are a group of conditions presenting with multiple congenital contractures in the distal joints. The 10 types of DA are distinguished by different extra-articular manifestations. Heterozygous gain-of-function variants in PIEZO2 are known to cause a spectrum of DA conditions including DA type 3, DA type 5, and possibly Marden Walker syndrome, which are usually distinguished by the presence of cleft palate (DA3), ptosis and restriction in eye movements (DA5), and specific facial abnormalities and central nervous system involvement, respectively. We report on a boy with a recurrent de novo heterozygous PIEZO2 variant in exon 20 (NM_022068.3: c.2994G > A, p.(Met998Ile); NM_001378183.1: c.3069G > A, p.(Met1023Ile)), who presented at birth with DA and later developed respiratory insufficiency. His phenotype broadly fits the PIEZO2 phenotypic spectrum and potentially extends it with novel phenotypic features of pretibial linear vertical crease, immobile skin, immobile tongue, and lipid myopathy.
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Affiliation(s)
- Agata Oliwa
- Undergraduate Medical School, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, UK
| | - Glenda Hendson
- Division of Neuropathology, Department of Pathology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Cheryl Longman
- West of Scotland Regional Genetics Service, Queen Elizabeth University Hospital, Glasgow, UK
| | - Anne Synnes
- Division of Neonatology, Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Kim Seath
- Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Angela Barnicoat
- Clinical Genetics Department, Great Ormond Street Hospital, London, UK
| | - Judith G Hall
- Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Millan S Patel
- Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada
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177
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Bergevin M, Steele J, Payen de la Garanderie M, Feral-Basin C, Marcora SM, Rainville P, Caron JG, Pageaux B. Pharmacological Blockade of Muscle Afferents and Perception of Effort: A Systematic Review with Meta-analysis. Sports Med 2023; 53:415-435. [PMID: 36318384 DOI: 10.1007/s40279-022-01762-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/03/2022] [Indexed: 01/27/2023]
Abstract
BACKGROUND The perception of effort provides information on task difficulty and influences physical exercise regulation and human behavior. This perception differs from other-exercise related perceptions such as pain. There is no consensus on the role of group III/IV muscle afferents as a signal processed by the brain to generate the perception of effort. OBJECTIVE The aim of this meta-analysis was to investigate the effect of pharmacologically blocking muscle afferents on the perception of effort. METHODS Six databases were searched to identify studies measuring the ratings of perceived effort during physical exercise, with and without pharmacological blockade of muscle afferents. Articles were coded based on the operational measurement used to distinguish studies in which perception of effort was assessed specifically (effort dissociated) or as a composite experience including other exercise-related perceptions (effort not dissociated). Articles that did not provide enough information for coding were assigned to the unclear group. RESULTS The effort dissociated group (n = 6) demonstrated a slight increase in ratings of perceived effort with reduced muscle afferent feedback (standard mean change raw, 0.39; 95% confidence interval 0.13-0.64). The group effort not dissociated (n = 2) did not reveal conclusive results (standard mean change raw, - 0.29; 95% confidence interval - 2.39 to 1.8). The group unclear (n = 8) revealed a slight ratings of perceived effort decrease with reduced muscle afferent feedback (standard mean change raw, - 0.27; 95% confidence interval - 0.50 to - 0.04). CONCLUSIONS The heterogeneity in results between groups reveals that the inclusion of perceptions other than effort in its rating influences the ratings of perceived effort reported by the participants. The absence of decreased ratings of perceived effort in the effort dissociated group suggests that muscle afferent feedback is not a sensory signal for the perception of effort.
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Affiliation(s)
- Maxime Bergevin
- École de kinésiologie et des sciences de l'activite physique (EKSAP), Faculté de médecine, Université́ de Montréal, Montreal, QC, Canada.,Centre de recherche de l'Institut universitaire de gériatrie de Montréal (CRIUGM), Montreal, Canada
| | - James Steele
- School of Sport, Health and Social Sciences, Southampton, UK
| | - Marie Payen de la Garanderie
- École de kinésiologie et des sciences de l'activite physique (EKSAP), Faculté de médecine, Université́ de Montréal, Montreal, QC, Canada.,Centre de recherche de l'Institut universitaire de gériatrie de Montréal (CRIUGM), Montreal, Canada
| | - Camille Feral-Basin
- École de kinésiologie et des sciences de l'activite physique (EKSAP), Faculté de médecine, Université́ de Montréal, Montreal, QC, Canada.,Centre de recherche de l'Institut universitaire de gériatrie de Montréal (CRIUGM), Montreal, Canada
| | - Samuele M Marcora
- Department of Biomedical and Neuromotor Sciences (DiBiNeM), University of Bologna, Bologna, Italy
| | - Pierre Rainville
- Centre de recherche de l'Institut universitaire de gériatrie de Montréal (CRIUGM), Montreal, Canada.,Département de stomatologie, Faculté de médecine dentaire, Université de Montréal, Montreal, QC, Canada
| | - Jeffrey G Caron
- École de kinésiologie et des sciences de l'activite physique (EKSAP), Faculté de médecine, Université́ de Montréal, Montreal, QC, Canada.,Centre de recherche interdisciplinaire en réadaptation du Montréal métropolitain, Montreal, QC, Canada
| | - Benjamin Pageaux
- École de kinésiologie et des sciences de l'activite physique (EKSAP), Faculté de médecine, Université́ de Montréal, Montreal, QC, Canada. .,Centre de recherche de l'Institut universitaire de gériatrie de Montréal (CRIUGM), Montreal, Canada. .,Centre interdisciplinaire de recherche sur le cerveau et l'apprentissage (CIRCA), Montreal, QC, Canada.
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178
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Sonobe Y, Yamagata T, Yang H, Haruki Y, Ogawa K. Supramodal Representation of the Sense of Body Ownership in the Human Parieto-Premotor and Extrastriate Cortices. eNeuro 2023; 10:ENEURO.0332-22.2023. [PMID: 36657967 PMCID: PMC9927518 DOI: 10.1523/eneuro.0332-22.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 12/25/2022] [Accepted: 01/09/2023] [Indexed: 01/21/2023] Open
Abstract
The sense of body ownership, defined as the sensation that one's body belongs to oneself, is a fundamental component of bodily self-consciousness. Several studies have shown the importance of multisensory integration for the emergence of the sense of body ownership, together with the involvement of the parieto-premotor and extrastriate cortices in bodily awareness. However, whether the sense of body ownership elicited by different sources of signal, especially visuotactile and visuomotor inputs, is represented by common neural patterns remains to be elucidated. We used functional magnetic resonance imaging (fMRI) to investigate the existence of neural correlates of the sense of body ownership independent of the sensory modalities. Participants received tactile stimulation or executed finger movements while given synchronous and asynchronous visual feedback of their hand. We used multivoxel patterns analysis (MVPA) to decode the synchronous and asynchronous conditions with cross-classification between two modalities: the classifier was first trained in the visuotactile sessions and then tested in the visuomotor sessions, and vice versa. Regions of interest (ROIs)-based and searchlight analyses revealed significant above-chance cross-classification accuracies in the bilateral intraparietal sulcus (IPS), the bilateral ventral premotor cortex (PMv), and the left extrastriate body area (EBA). Moreover, we observed a significant positive correlation between the cross-classification accuracy in the left PMv and the difference in subjective ratings of the sense of body ownership between the synchronous and asynchronous conditions. Our findings revealed the neural representations of the sense of body ownership in the IPS, PMv, and EBA that is invariant to the sensory modalities.
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Affiliation(s)
- Yusuke Sonobe
- Department of Psychology, Hokkaido University, Sapporo 060-0810, Japan
| | - Toyoki Yamagata
- Department of Psychology, Hokkaido University, Sapporo 060-0810, Japan
| | - Huixiang Yang
- Department of Psychology, Hokkaido University, Sapporo 060-0810, Japan
| | - Yusuke Haruki
- Department of Psychology, Hokkaido University, Sapporo 060-0810, Japan
| | - Kenji Ogawa
- Department of Psychology, Hokkaido University, Sapporo 060-0810, Japan
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179
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The effect of pinch span on pinch force sense in healthy participants. Atten Percept Psychophys 2023; 85:474-484. [PMID: 35794294 DOI: 10.3758/s13414-022-02534-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/22/2022] [Indexed: 11/08/2022]
Abstract
The purpose of the current investigation was to evaluate the effect of pinch span on the perception of pinch force in typical participants. The healthy participants (10 males and 10 females) conducted an ipsilateral force reproduction test with three distinct pinch spans (2, 4, and 6 cm) at three distinct forces of 10%, 30%, and 50% maximum voluntary isometric contraction. The findings revealed a significantly greater consistency (lower variable error (VE)) of 4 cm compared with 2 and 6 cm pinch spans. Our study also showed that the participants might use a larger force (more overestimated) output for larger pinch spans (4 and 6 cm) than small pinch spans (2 cm). These results may offer significant insights into the higher rates of musculoskeletal disorders among females, enabling researchers and clinicians to design novel interventions and tools to improve pinch force perception and reduce hand injury rates in males and females.
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180
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Hunt CL, Sun Y, Wang S, Shehata AW, Hebert JS, Gonzalez-Fernandez M, Kaliki RR, Thakor NV. Limb loading enhances skill transfer between augmented and physical reality tasks during limb loss rehabilitation. J Neuroeng Rehabil 2023; 20:16. [PMID: 36707817 PMCID: PMC9881335 DOI: 10.1186/s12984-023-01136-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 01/10/2023] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Virtual and augmented reality (AR) have become popular modalities for training myoelectric prosthesis control with upper-limb amputees. While some systems have shown moderate success, it is unclear how well the complex motor skills learned in an AR simulation transfer to completing the same tasks in physical reality. Limb loading is a possible dimension of motor skill execution that is absent in current AR solutions that may help to increase skill transfer between the virtual and physical domains. METHODS We implemented an immersive AR environment where individuals could operate a myoelectric virtual prosthesis to accomplish a variety of object relocation manipulations. Intact limb participants were separated into three groups, the load control (CGLD; [Formula: see text]), the AR control (CGAR; [Formula: see text]), and the experimental group (EG; [Formula: see text]). Both the CGAR and EG completed a 5-session prosthesis training protocol in AR while the CGLD performed simple muscle training. The EG attempted manipulations in AR while undergoing limb loading. The CGAR attempted the same manipulations without loading. All participants performed the same manipulations in physical reality while operating a real prosthesis pre- and post-training. The main outcome measure was the change in the number of manipulations completed during the physical reality assessments (i.e. completion rate). Secondary outcomes included movement kinematics and visuomotor behavior. RESULTS The EG experienced a greater increase in completion rate post-training than both the CGAR and CGLD. This performance increase was accompanied by a shorter motor learning phase, the EG's performance saturating in less sessions of AR training than the CGAR. CONCLUSION The results demonstrated that limb loading plays an important role in transferring complex motor skills learned in virtual spaces to their physical reality analogs. While participants who did not receive limb loading were able to receive some functional benefit from AR training, participants who received the loading experienced a greater positive change in motor performance with their performance saturating in fewer training sessions.
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Affiliation(s)
- Christopher L. Hunt
- grid.21107.350000 0001 2171 9311Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, USA
| | - Yinghe Sun
- grid.429997.80000 0004 1936 7531Department of Electrical and Computer Engineering, Tufts University, Medford, USA
| | - Shipeng Wang
- grid.21107.350000 0001 2171 9311Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, USA
| | - Ahmed W. Shehata
- grid.17089.370000 0001 2190 316XDivision of Physical Medicine & Rehabilitation, University of Alberta, Edmonton, Canada
| | - Jacqueline S. Hebert
- grid.17089.370000 0001 2190 316XDivision of Physical Medicine & Rehabilitation, University of Alberta, Edmonton, Canada
| | - Marlis Gonzalez-Fernandez
- grid.21107.350000 0001 2171 9311Department of Physical Medicine and Rehabilitation, The Johns Hopkins University, Baltimore, USA
| | - Rahul R. Kaliki
- grid.21107.350000 0001 2171 9311Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, USA ,grid.281272.cInfinite Biomedical Technologies, Baltimore, USA
| | - Nitish V. Thakor
- grid.21107.350000 0001 2171 9311Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, USA
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181
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Kent JA. Biomechanically-Consistent Skin Stretch as an Intuitive Mechanism for Sensory Feedback: A Preliminary Investigation in the Lower Limb. IEEE TRANSACTIONS ON HAPTICS 2023; PP:106-111. [PMID: 37022020 DOI: 10.1109/toh.2023.3238525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
The proprioceptive loss accompanied by lower limb amputation can impair function and mobility. We explore a simple, mechanical skin-stretch array configured to generate superficial tissue behaviour that might occur with movement about an intact joint. Four adhesive pads attached around the circumference of the lower leg were connected via cords to a remote "foot" mounted on a ball joint attached to the underside of a fracture boot, such that "foot" reorientation would result in skin stretch. In two discrimination experiments performed with and without the connection, with no view of the mechanism, and with minimal training, unimpaired adults (i) estimated foot orientation following passive foot rotations (eight directions), either with or without contact between the lower leg and boot, and (ii) actively lowered the "foot" to estimate slope orientation (four directions). In (i), 56-60% of responses (depending on contact condition) were correct and 88-94% were either correct or one of the two adjacent choices. In (ii), 56% of responses were correct. In contrast, without the connection, participants performed near or no different to chance. A biomechanically-consistent skin stretch array may be an intuitive means to convey proprioceptive information from an artificial or poorly innervated joint.
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182
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Strong A, Grip H, Arumugam A, Boraxbekk CJ, Selling J, Häger CK. Right hemisphere brain lateralization for knee proprioception among right-limb dominant individuals. Front Hum Neurosci 2023; 17:969101. [PMID: 36742357 PMCID: PMC9892188 DOI: 10.3389/fnhum.2023.969101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 01/09/2023] [Indexed: 01/21/2023] Open
Abstract
Introduction Studies indicate that brain response during proprioceptive tasks predominates in the right hemisphere. A right hemisphere lateralization for proprioception may help to explain findings that right-limb dominant individuals perform position matching tasks better with the non-dominant left side. Evidence for proprioception-related brain response and side preference is, however, limited and based mainly on studies of the upper limbs. Establishing brain response associated with proprioceptive acuity for the lower limbs in asymptomatic individuals could be useful for understanding the influence of neurological pathologies on proprioception and locomotion. Methods We assessed brain response during an active unilateral knee joint position sense (JPS) test for both legs of 19 right-limb dominant asymptomatic individuals (females/males = 12/7; mean ± SD age = 27.1 ± 4.6 years). Functional magnetic resonance imaging (fMRI) mapped brain response and simultaneous motion capture provided real-time instructions based on kinematics, accurate JPS errors and facilitated extraction of only relevant brain images. Results Significantly greater absolute (but not constant nor variable) errors were seen for the dominant right knee (5.22° ± 2.02°) compared with the non-dominant left knee (4.39° ± 1.79°) (P = 0.02). When limbs were pooled for analysis, significantly greater responses were observed mainly in the right hemisphere for, e.g., the precentral gyrus and insula compared with a similar movement without position matching. Significant response was also observed in the left hemisphere for the inferior frontal gyrus pars triangularis. When limbs were assessed independently, common response was observed in the right precentral gyrus and superior frontal gyrus. For the right leg, additional response was found in the right middle frontal gyrus. For the left leg, additional response was observed in the right rolandic operculum. Significant positive correlations were found between mean JPS absolute errors for the right knee and simultaneous brain response in the right supramarginal gyrus (r = 0.464, P = 0.040). Discussion Our findings support a general right brain hemisphere lateralization for proprioception (knee JPS) of the lower limbs regardless of which limb is active. Better proprioceptive acuity for the non-dominant left compared with the dominant right knee indicates that right hemisphere lateralization may have meaningful implications for motor control.
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Affiliation(s)
- Andrew Strong
- Department of Community Medicine and Rehabilitation, Physiotherapy, Umeå University, Umeå, Sweden,*Correspondence: Andrew Strong,
| | - Helena Grip
- Department of Radiation Sciences, Umeå University, Umeå, Sweden
| | - Ashokan Arumugam
- Department of Physiotherapy, College of Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
| | - Carl-Johan Boraxbekk
- Department of Radiation Sciences, Umeå University, Umeå, Sweden,Danish Research Centre for Magnetic Resonance, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Hvidovre, Copenhagen, Denmark,Umeå Center for Functional Brain Imaging, Umeå University, Umeå, Sweden,Institute of Sports Medicine Copenhagen and Department of Neurology, Copenhagen University Hospital Bispebjerg, Copenhagen, Denmark,Institute for Clinical Medicine, Faculty of Medical and Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jonas Selling
- Department of Community Medicine and Rehabilitation, Physiotherapy, Umeå University, Umeå, Sweden
| | - Charlotte K. Häger
- Department of Community Medicine and Rehabilitation, Physiotherapy, Umeå University, Umeå, Sweden
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183
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Millhuff A, Haddad H, Draper MS, Motzko M, Glueck E, Holland B, Wright B. The midline interlaminar ligament of the spine: An anatomical study. Clin Anat 2023; 36:618-623. [PMID: 36598006 DOI: 10.1002/ca.24003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 12/16/2022] [Accepted: 12/24/2022] [Indexed: 01/05/2023]
Abstract
INTRODUCTION During routine cadaveric dissection, Simonds et al. in 2019 found a previously undocumented ligament, which they termed the midline interlaminar ligament (MIL), in 24 out of 36 (76.5%) lumbar spinal levels. The MIL is an unpaired ligament located between and distinctly separate from the right and left ligamenta flava (LF). The purpose of this study was to identify the presence or absence of the MIL in the cervical, thoracic, and lumbar spinal regions and obtain detailed measurements of the ligaments' toughness (R) and elastic modulus (E). MATERIALS AND METHODS Intact preserved cadaveric vertebrae from C2 to the upper sacral region were dissected. Presence or absence of the MIL was documented, and length and width of each MIL were measured in situ. The R and E of the LFs from corresponding spinal segments were found for comparison. RESULTS At least one MIL was observed in 90.3% (28) of specimens. Eighty-eight MIL's were observed out of 186 cervical intervertebral levels (0.5%), 371 thoracic intervertebral levels (5.9%), and 101 lumbar intervertebral levels (63.4%). The mean width and length of the MIL were 1.21 ± 0.36 and 16.37 ± 2.17 mm, respectively. The mean R of the MIL and the LF were 1390.27 and 2068.04 J m-2 , respectively. The mean E of the MILs and LFs was 46.78 ± 16.65 and 51.15 ± 21.68 MPa, respectively. CONCLUSIONS Based on our findings, the MIL was present in the majority of vertebrae in our cadaveric population with a predominance for the lumbar region.
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Affiliation(s)
- Alexandra Millhuff
- Department of Anatomy, Kansas City University, Kansas City, Missouri, USA
| | - Hannah Haddad
- Department of Anatomy, Kansas City University, Kansas City, Missouri, USA
| | - M Scott Draper
- Department of Anatomy, Kansas City University, Kansas City, Missouri, USA
| | - Micaela Motzko
- Department of Anatomy, Kansas City University, Kansas City, Missouri, USA
| | - Edwin Glueck
- Department of Anatomy, Kansas City University, Kansas City, Missouri, USA
| | - Brandalynn Holland
- Department of Anatomy, Kansas City University, Kansas City, Missouri, USA
| | - Barth Wright
- Department of Anatomy, Kansas City University, Kansas City, Missouri, USA
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184
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Activity Distribution Among the Hamstring Muscles During the Nordic Hamstring Exercise: A Multichannel Surface Electromyography Study. J Appl Biomech 2023; 39:69-79. [PMID: 36791725 DOI: 10.1123/jab.2022-0102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 12/01/2022] [Accepted: 12/15/2022] [Indexed: 02/17/2023]
Abstract
This study assessed activity distribution among the hamstring muscles during the Nordic hamstring exercise (NHE). The objective was to compare muscle activity between and within muscles during the NHE to add insights in its underlying protective mechanism. Through multichannel electromyography, we measured muscle activity in male basketball players during the NHE. Electromyography was assessed at 15 locations: 5 for biceps femoris long head, 4 for semitendinosus, and 6 for semimembranosus. For each percent of the eccentric phase of the NHE, muscle activity was calculated for each electrode location within each hamstring muscle individually. To quantify whole muscle head activity, means and variances across electrodes within each muscle were calculated. Thirty-five noninjured participants were included (mean age, 18 [2] y; mass, 87 [12] kg; height, 192 [9] cm). Heterogeneous muscle activity was found between 38% and 62% and over the whole eccentric contraction phase within the semitendinosus and the semimembranosus, respectively. Muscle activity of the semitendinosus was significantly higher than that of the biceps femoris long head. During the NHE, the relative contribution of the semitendinosus is the highest among hamstring muscles. Its strong contribution may compensate for the biceps femoris long head, the most commonly injured hamstring muscle head.
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185
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Santuz A, Akay T. Muscle spindles and their role in maintaining robust locomotion. J Physiol 2023; 601:275-285. [PMID: 36510697 PMCID: PMC10483674 DOI: 10.1113/jp282563] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 12/09/2022] [Indexed: 12/15/2022] Open
Abstract
Muscle spindles, one of the two main classes of proprioceptors together with Golgi tendon organs, are sensory structures that keep the central nervous system updated about the position and movement of body parts. Although they were discovered more than 150 years ago, their function during movement is not yet fully understood. Here, we summarize the morphology and known functions of muscle spindles, with a particular focus on locomotion. Although certain properties such as the sensitivity to dynamic and static muscle stretch are long known, recent advances in molecular biology have allowed the characterization of the molecular mechanisms for signal transduction in muscle spindles. Building upon classic literature showing that a lack of sensory feedback is deleterious to locomotion, we bring to the discussion more recent findings that support a pivotal role of muscle spindles in maintaining murine and human locomotor robustness, defined as the ability to cope with perturbations. Yet, more research is needed to expand the existing mechanistic understanding of how muscle spindles contribute to the production of robust, functional locomotion in real world settings. Future investigations should focus on combining different animal models to identify, in health and disease, those peripheral, spinal and brain proprioceptive structures involved in the fine tuning of motor control when locomotion happens in challenging conditions.
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Affiliation(s)
- Alessandro Santuz
- Atlantic Mobility Action Project, Brain Repair Centre, Department of Medical Neuroscience, Life Sciences Research Institute, Dalhousie University, Halifax, NS, Canada
| | - Turgay Akay
- Atlantic Mobility Action Project, Brain Repair Centre, Department of Medical Neuroscience, Life Sciences Research Institute, Dalhousie University, Halifax, NS, Canada
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186
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Seghier ML. Multiple functions of the angular gyrus at high temporal resolution. Brain Struct Funct 2023; 228:7-46. [PMID: 35674917 DOI: 10.1007/s00429-022-02512-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 05/22/2022] [Indexed: 02/07/2023]
Abstract
Here, the functions of the angular gyrus (AG) are evaluated in the light of current evidence from transcranial magnetic/electric stimulation (TMS/TES) and EEG/MEG studies. 65 TMS/TES and 52 EEG/MEG studies were examined in this review. TMS/TES literature points to a causal role in semantic processing, word and number processing, attention and visual search, self-guided movement, memory, and self-processing. EEG/MEG studies reported AG effects at latencies varying between 32 and 800 ms in a wide range of domains, with a high probability to detect an effect at 300-350 ms post-stimulus onset. A three-phase unifying model revolving around the process of sensemaking is then suggested: (1) early AG involvement in defining the current context, within the first 200 ms, with a bias toward the right hemisphere; (2) attention re-orientation and retrieval of relevant information within 200-500 ms; and (3) cross-modal integration at late latencies with a bias toward the left hemisphere. This sensemaking process can favour accuracy (e.g. for word and number processing) or plausibility (e.g. for comprehension and social cognition). Such functions of the AG depend on the status of other connected regions. The much-debated semantic role is also discussed as follows: (1) there is a strong TMS/TES evidence for a causal semantic role, (2) current EEG/MEG evidence is however weak, but (3) the existing arguments against a semantic role for the AG are not strong. Some outstanding questions for future research are proposed. This review recognizes that cracking the role(s) of the AG in cognition is possible only when its exact contributions within the default mode network are teased apart.
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Affiliation(s)
- Mohamed L Seghier
- Department of Biomedical Engineering, Khalifa University of Science and Technology, Abu Dhabi, UAE. .,Healthcare Engineering Innovation Center (HEIC), Khalifa University of Science and Technology, Abu Dhabi, UAE.
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187
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Liu Z, Wang Q, Sun W, Song Q. Balancing sensory inputs: somatosensory reweighting from proprioception to tactile sensation in maintaining postural stability among older adults with sensory deficits. Front Public Health 2023; 11:1165010. [PMID: 37213635 PMCID: PMC10194835 DOI: 10.3389/fpubh.2023.1165010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 03/27/2023] [Indexed: 05/23/2023] Open
Abstract
Background Sensory deficits increase the risk of falls among older adults. The purpose of this study was to investigate the correlations of lower extremity muscle strength, proprioception, and tactile sensation to postural stability among older adults with and without sensory deficits, to understand the contribution of each factor to postural stability, and to explore sensory reweighting among the two populations. Methods A total of 103 participants were recruited and divided into two older adult groups with (female = 24, male = 26, age = 69.1 ± 3.15 years, height = 162.72 ± 6.94 cm, body mass = 64.05 ± 9.82 kg) and without sensory deficits (female = 26, male = 27, age = 70.02 ± 4.9 years, height = 163.76 ± 7.60 cm, body mass = 65.83 ± 10.31 kg), based on whether a 5.07 Semmes-Weinstein monofilament could be detected at foot soles. Their Berg Balance Scale (BBS), lower extremity muscle strength, proprioception, and tactile sensation were tested and compared between the two groups. Pearson's or Spearman's correlations were used to explore the relationships between the BBS and each variable. Factor analysis and multivariate linear regression were used to verify the degrees of correlation between the generated factors and the postural stability. Results Low BBS (p = 0.003, η2 = 0.088) scores and higher proprioception thresholds (knee flexion: p = 0.015, η2 = 0.059; knee extension: p = 0.011, η2 = 0.065; ankle plantarflexion: p = 0.006, η2 = 0.075; ankle dorsiflexion: p = 0.001, η2 = 0.106) were detected among older adults with sensory deficits compared with those without sensory deficits. Lower extremity muscle strength (ankle plantarflexion: r = 0.342, p = 0.002; hip abduction: r = 0.303, p = 0.041) and proprioception (knee flexion: r = -0.419, p = 0.004; knee extension: r = -0.292, p = 0.049; ankle plantarflexion: r = -0.450, p = 0.002; ankle dorsiflexion: r = -0.441, p = 0.002) were correlated with BBS among older adults without sensory deficits, while lower extremity muscle strength (ankle plantarflexion: r = 0.501, p<0.001; hip abduction: r = 0.302, p = 0.041) and tactile sensation (great toe: r = -0.388, p = 0.008; 5th metatarsal: r = -0.301, p = 0.042) were correlated with BBS among older adults with sensory deficits. Conclusion Older adults with sensory deficits have poorer proprioception and postural stability. Somatosensory reweighting occurs from proprioception to tactile sensation among older adults with sensory deficits in maintaining postural stability.
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188
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Xue X, Tao W, Xu X, Jin Z, Li Q, Wang Y, Gu X, Wang R, Hua Y. Do exercise therapies restore the deficits of joint position sense in patients with chronic ankle instability? A systematic review and meta-analysis. SPORTS MEDICINE AND HEALTH SCIENCE 2023; 5:67-73. [PMID: 36994176 PMCID: PMC10040377 DOI: 10.1016/j.smhs.2023.01.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 01/03/2023] [Accepted: 01/06/2023] [Indexed: 01/24/2023] Open
Abstract
To determine whether existing exercise therapies can restore the joint position sense (JPS) deficits of patients with chronic ankle instability (CAI) when compared with controlled non-training patients. Seven databases were searched using ankle, injury, proprioception, and exercise-therapy-related terms. Peer-reviewed human studies in English that used the absolute errors score of joint position reproduction (JPR) test to compare the JPS of injured ankles in CAI patients before and after exercise therapy and non-training controls were included and analyzed. Demographic information, sample size, description of exercise therapies, methodological details of the JPR test, and absolute error scores were extracted by two researchers independently. Meta-analysis of the differences in JPS changes (i.e., absolute errors after treatment minus the baseline) between the exercise therapies and non-training controls was performed with the weighted mean difference (WMD) and 95% confidence interval (CI). Seven studies were finally included. Meta-analyses revealed significantly higher improvements in passive JPS during inversion with, WMD = -1.54° and eversion, of, WMD = -1.80°, after exercise therapies when compared with non-training controls. However, no significant changes in the impaired side active JPS were observed with regard to inversion and eversion. Existing exercise therapies may have a positive effect on passive JPS during inversion and eversion, but do not restore the active JPS deficits of injured ankles in patients with CAI when compared with non-training controls. Updated exercise components with a longer duration that focus on active JPS with longer duration are needed to supplement the existing content of exercise therapies.
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Affiliation(s)
- Xiao'ao Xue
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Weichu Tao
- School of Exercise and Health, Shanghai University of Sport, Shanghai, 200438, China
| | - Xiaoyun Xu
- School of Exercise and Health, Shanghai University of Sport, Shanghai, 200438, China
| | - Zhengbiao Jin
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Qianru Li
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Yiran Wang
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Xicheng Gu
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Ru Wang
- School of Exercise and Health, Shanghai University of Sport, Shanghai, 200438, China
- Corresponding author. School of Kinesiology, Shanghai University of Sport, Shanghai, 200438, China.
| | - Yinghui Hua
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, China
- Corresponding author. Department of Sports Medicine, Huashan Hospital, Shanghai, 200040, China.
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189
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De Bock S, Ampe T, Rossini M, Tassignon B, Lefeber D, Rodriguez-Guerrero C, Roelands B, Geeroms J, Meeusen R, De Pauw K. Passive shoulder exoskeleton support partially mitigates fatigue-induced effects in overhead work. APPLIED ERGONOMICS 2023; 106:103903. [PMID: 36148702 DOI: 10.1016/j.apergo.2022.103903] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 09/04/2022] [Accepted: 09/09/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Despite the potential of occupational passive shoulder exoskeletons (PSEs) to relieve overhead work, limited insights in overhead work precision performance impedes large-scale adoption in industry. OBJECTIVE To investigate the effect of PSE support on the reduction in task performance caused by physical fatigue. METHODS This experiment consisted of a randomized, counterbalanced cross-over design comparing Exo4Work PSE support and no support, in a physically fatigued state and a control condition. Precision performance was determined using execution speed and drilling errors. Muscle activity and shoulder joint kinematics were recorded. RESULTS Fatigue altered task performance, shoulder joint kinematics, muscle activity and subjective experience during overhead work. The PSE support mitigated the fatigue-induced changes in shoulder kinematics. Additionally, a part of the fatigue-induced co-activation of shoulder stabilizing muscles was avoided when working with the PSE. The PSE support also reduced the activity of the anterior and medial deltoid. CONCLUSION Physical fatigue provokes compensatory movements and increased co-contraction of muscles when executing overhead work. These fatigue-induced alterations are generally believed to increase the overall musculoskeletal load. The support provided by the PSE reduced muscle activity of muscles working to elevate the arm, but also partially mitigated those fatigue-induced effects. SIGNIFICANCE This study shows that the effect of PSE support on precision performance is limited, and suggested that, apart from the known effects of PSE support during overhead work, wearing the exoskeleton in a physically fatigued state may provide additional advantages.
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Affiliation(s)
- Sander De Bock
- BruBotics, Vrije Universiteit Brussel, Brussels, Belgium; Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
| | - Toon Ampe
- BruBotics, Vrije Universiteit Brussel, Brussels, Belgium; Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
| | - Marco Rossini
- BruBotics, Vrije Universiteit Brussel, Brussels, Belgium; Robotics and Multibody Mechanics Research Group, Vrije Universiteit Brussel and Flanders Make, Brussels, Belgium
| | - Bruno Tassignon
- BruBotics, Vrije Universiteit Brussel, Brussels, Belgium; Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
| | - Dirk Lefeber
- BruBotics, Vrije Universiteit Brussel, Brussels, Belgium; Robotics and Multibody Mechanics Research Group, Vrije Universiteit Brussel and Flanders Make, Brussels, Belgium
| | - Carlos Rodriguez-Guerrero
- BruBotics, Vrije Universiteit Brussel, Brussels, Belgium; Robotics and Multibody Mechanics Research Group, Vrije Universiteit Brussel and Flanders Make, Brussels, Belgium
| | - Bart Roelands
- BruBotics, Vrije Universiteit Brussel, Brussels, Belgium; Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
| | - Joost Geeroms
- BruBotics, Vrije Universiteit Brussel, Brussels, Belgium; Robotics and Multibody Mechanics Research Group, Vrije Universiteit Brussel and Flanders Make, Brussels, Belgium
| | - Romain Meeusen
- BruBotics, Vrije Universiteit Brussel, Brussels, Belgium; Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
| | - Kevin De Pauw
- BruBotics, Vrije Universiteit Brussel, Brussels, Belgium; Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium.
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190
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Xing L, Bao Y, Wang B, Shi M, Wei Y, Huang X, Dai Y, Shi H, Gai X, Luo Q, Yin Y, Qin D. Falls caused by balance disorders in the elderly with multiple systems involved: Pathogenic mechanisms and treatment strategies. Front Neurol 2023; 14:1128092. [PMID: 36908603 PMCID: PMC9996061 DOI: 10.3389/fneur.2023.1128092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 02/07/2023] [Indexed: 02/25/2023] Open
Abstract
Falls are the main contributor to both fatal and nonfatal injuries in elderly individuals as well as significant sources of morbidity and mortality, which are mostly induced by impaired balance control. The ability to keep balance is a remarkably complex process that allows for rapid and precise changes to prevent falls with multiple systems involved, such as musculoskeletal system, the central nervous system and sensory system. However, the exact pathogenesis of falls caused by balance disorders in the elderly has eluded researchers to date. In consideration of aging phenomenon aggravation and fall risks in the elderly, there is an urgent need to explore the pathogenesis and treatments of falls caused by balance disorders in the elderly. The present review discusses the epidemiology of falls in the elderly, potential pathogenic mechanisms underlying multiple systems involved in falls caused by balance disorders, including musculoskeletal system, the central nervous system and sensory system. Meanwhile, some common treatment strategies, such as physical exercise, new equipment based on artificial intelligence, pharmacologic treatments and fall prevention education are also reviewed. To fully understand the pathogenesis and treatment of falls caused by balance disorders, a need remains for future large-scale multi-center randomized controlled trials and in-depth mechanism studies.
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Affiliation(s)
- Liwei Xing
- School of Basic Medical Sciences, Yunnan University of Chinese Medicine, Kunming Yunnan, China.,The First Clinical Medical School, Yunnan University of Chinese Medicine, Kunming Yunnan, China
| | - Yi Bao
- Department of Rehabilitation Medicine, The Affiliated Hospital of Yunnan University, Kunming Yunnan, China
| | - Binyang Wang
- Department of Rehabilitation Medicine, The Affiliated Hospital of Yunnan University, Kunming Yunnan, China
| | - Mingqin Shi
- School of Basic Medical Sciences, Yunnan University of Chinese Medicine, Kunming Yunnan, China
| | - Yuanyuan Wei
- School of Basic Medical Sciences, Yunnan University of Chinese Medicine, Kunming Yunnan, China
| | - Xiaoyi Huang
- School of Basic Medical Sciences, Yunnan University of Chinese Medicine, Kunming Yunnan, China
| | - Youwu Dai
- School of Basic Medical Sciences, Yunnan University of Chinese Medicine, Kunming Yunnan, China
| | - Hongling Shi
- Department of Rehabilitation Medicine, The Third People's Hospital of Yunnan Province, Kunming Yunnan, China
| | - Xuesong Gai
- Department of Rehabilitation Medicine, The First People's Hospital of Yunnan Province, Kunming Yunnan, China
| | - Qiu Luo
- Department of Rehabilitation Medicine, The Affiliated Hospital of Yunnan University, Kunming Yunnan, China
| | - Yong Yin
- Department of Rehabilitation Medicine, The Affiliated Hospital of Yunnan University, Kunming Yunnan, China
| | - Dongdong Qin
- School of Basic Medical Sciences, Yunnan University of Chinese Medicine, Kunming Yunnan, China
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191
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Shen J, Ma L, Gu X, Fu J, Yao Y, Liu J, Li Y. The effects of dynamic motion instability system training on motor function and balance after stroke: A randomized trial. NeuroRehabilitation 2023; 53:121-130. [PMID: 37424480 PMCID: PMC10473069 DOI: 10.3233/nre-230008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 05/21/2023] [Indexed: 07/11/2023]
Abstract
BACKGROUND The balance and postural control of humans is related to the coordination of dynamic perception and movement. Multiple senses, such as vision, vestibular sense, proprioception, and/or a single sensory disorder, would lead to its integration disorder and induce imbalance and abnormal gait. OBJECTIVE The present study aimed to determine the effects of dynamic motion instability system training (DMIST) on the balance and motor function of hemiplegic patients after stroke. METHODS In this assessor-blinded, randomized controlled trial, the participants allocated to the intervention group (n = 20) received 30 minutes of conventional treatment and 20 minutes of DMIST training. Participants randomized to the control group (n = 20) received the same dose of conventional therapy and 20 minutes of general balance training. Rehabilitation was performed 5 times per week for 8 weeks. The primary outcome was the Fugl-Meyer assessment for the lower extremity (FMA-LE), and the secondary outcomes were the Berg balance scale (BBS) and gait function. Data were collected at baseline and immediately after the intervention. RESULTS After 8 weeks (t1), both groups showed significant post-intervention improvements in BBS, FMA-LE, gait speed and stride length (P < 0.05); there were significant positive correlations between the increase in FMA-LE and gait speed and stride length. Compared with the control group, the DMIST group showed significant post-intervention improvements in FMA-LE, gait speed and stride length (P < 0.05). However, no significant differences between the groups were found over time with respect to BBS (P > 0.05). The experiences of patients with DMIST were positive, and no serious adverse events were related to the interventions. CONCLUSION Supervised DMIST could be highly effective in treating lower-limb motor function in patients with stroke. Frequent (weekly) and medium-term (8 weeks) dynamic motion instability-guided interventions might be highly effective in enhancing motor function, and subsequently improving gait in stroke patients.
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Affiliation(s)
- Jie Shen
- Center of Rehabilitation Medicine, The Second Affiliated Hospital of Jiaxing University, The Second Hospital of Jiaxing, Zhejiang, China
| | - Lianjie Ma
- Center of Rehabilitation Medicine, The Second Affiliated Hospital of Jiaxing University, The Second Hospital of Jiaxing, Zhejiang, China
| | - Xudong Gu
- Center of Rehabilitation Medicine, The Second Affiliated Hospital of Jiaxing University, The Second Hospital of Jiaxing, Zhejiang, China
| | - Jianming Fu
- Center of Rehabilitation Medicine, The Second Affiliated Hospital of Jiaxing University, The Second Hospital of Jiaxing, Zhejiang, China
| | - Yunhai Yao
- Center of Rehabilitation Medicine, The Second Affiliated Hospital of Jiaxing University, The Second Hospital of Jiaxing, Zhejiang, China
| | - Jia Liu
- Center of Rehabilitation Medicine, The Second Affiliated Hospital of Jiaxing University, The Second Hospital of Jiaxing, Zhejiang, China
| | - Yan Li
- Center of Rehabilitation Medicine, The Second Affiliated Hospital of Jiaxing University, The Second Hospital of Jiaxing, Zhejiang, China
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192
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Crucianelli L, Ehrsson HH. The Role of the Skin in Interoception: A Neglected Organ? PERSPECTIVES ON PSYCHOLOGICAL SCIENCE 2023; 18:224-238. [PMID: 35969893 PMCID: PMC9902974 DOI: 10.1177/17456916221094509] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
In the past 2 decades, interoception has received increasing attention in the fields of psychology and cognitive science, as well as neuroscience and physiology. A plethora of studies adopted the perception of cardiac signals as a proxy for interoception. However, recent findings have cast doubt on the methodological and intrinsic validity of the tasks used thus far. Therefore, there is an ongoing effort to improve the existing cardiac interoceptive tasks and to identify novel channels to target the perception of the physiological state of the body. Amid such scientific abundancy, one could question whether the field has been partially neglecting one of our widest organs in terms of dimensions and functions: the skin. According to some views grounded on anatomical and physiological evidence, skin-mediated signals such as affective touch, pain, and temperature have been redefined as interoceptive. However, there is no agreement in this regard. Here, we discuss some of the anatomical, physiological, and experimental arguments supporting the scientific study of interoception by means of skin-mediated signals. We argue that more attention should be paid to the skin as a sensory organ that monitors the bodily physiological state and further propose thermosensation as a particularly attractive model of skin-mediated interoception.
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Affiliation(s)
- Laura Crucianelli
- Laura Crucianelli, Department of Neuroscience, Karolinska Institutet
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193
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Upper Limb Function but Not Proprioception is Impaired in Essential Tremor: A Between-Groups Study and Causal Mediation Analysis. Tremor Other Hyperkinet Mov (N Y) 2023; 13:1. [PMID: 36644368 PMCID: PMC9818046 DOI: 10.5334/tohm.731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 12/19/2022] [Indexed: 01/04/2023] Open
Abstract
Background Essential tremor (ET) is characterized by abnormal oscillatory muscle activity and cerebellar involvement, factors that can lead to proprioceptive deficits, especially in active tasks. The present study aimed to quantify the severity of proprioceptive deficits in people with ET and estimate how these contribute to functional impairments. Methods Upper limb sensory, proprioceptive and motor function was assessed inindividuals with ET (n = 20) and healthy individuals (n = 22). To measure proprioceptive ability, participants discriminated the width of grasped objects and the weight of objects liftedwith the wrist extensors. Causal mediation analysis was used to estimate the extentthat impairments in upper limb function in ET was mediated by proprioceptive ability. Results Participants with ET had impaired upper limb function in all outcomes, and had greater postural and kinetic tremor. There were no differences between groups in proprioceptive discrimination of width (between-group mean difference [95% CI]: 0.32 mm [-0.23 to 0.87 mm]) or weight (-1.12 g [-7.31 to 5.07 g]). Causal mediation analysis showed the effect of ET on upper limb function was not mediated by proprioceptive ability. Conclusions Upper limb function but not proprioception was impaired in ET. The effect of ET on motor function was not mediated by proprioception. These results indicate that the central nervous system of people with ET is able to accommodate mild to moderate tremor in active proprioceptive tasks that rely primarily on afferent signals from muscle spindles.
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Bornstein B, Heinemann-Yerushalmi L, Krief S, Adler R, Dassa B, Leshkowitz D, Kim M, Bewick G, Banks RW, Zelzer E. Molecular characterization of the intact mouse muscle spindle using a multi-omics approach. eLife 2023; 12:81843. [PMID: 36744866 PMCID: PMC9931388 DOI: 10.7554/elife.81843] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 02/03/2023] [Indexed: 02/07/2023] Open
Abstract
The proprioceptive system is essential for the control of coordinated movement, posture, and skeletal integrity. The sense of proprioception is produced in the brain using peripheral sensory input from receptors such as the muscle spindle, which detects changes in the length of skeletal muscles. Despite its importance, the molecular composition of the muscle spindle is largely unknown. In this study, we generated comprehensive transcriptomic and proteomic datasets of the entire muscle spindle isolated from the murine deep masseter muscle. We then associated differentially expressed genes with the various tissues composing the spindle using bioinformatic analysis. Immunostaining verified these predictions, thus establishing new markers for the different spindle tissues. Utilizing these markers, we identified the differentiation stages the spindle capsule cells undergo during development. Together, these findings provide comprehensive molecular characterization of the intact spindle as well as new tools to study its development and function in health and disease.
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Affiliation(s)
- Bavat Bornstein
- Department of Molecular Genetics, Weizmann Institute of ScienceRehovotIsrael
| | | | - Sharon Krief
- Department of Molecular Genetics, Weizmann Institute of ScienceRehovotIsrael
| | - Ruth Adler
- Department of Molecular Genetics, Weizmann Institute of ScienceRehovotIsrael
| | - Bareket Dassa
- Bioinformatics Unit, Department of Life Sciences Core Facilities, Weizmann Institute of ScienceRehovotIsrael
| | - Dena Leshkowitz
- Bioinformatics Unit, Department of Life Sciences Core Facilities, Weizmann Institute of ScienceRehovotIsrael
| | - Minchul Kim
- Developmental Biology/Signal Transduction, Max Delbrueck Center for Molecular MedicineBerlinGermany,Team of syncytial cell biology, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC)IllkirchFrance
| | - Guy Bewick
- Institute of Medical Sciences, University of AberdeenAberdeenUnited Kingdom
| | - Robert W Banks
- Department of Biosciences, Durham UniversityDurhamUnited Kingdom
| | - Elazar Zelzer
- Department of Molecular Genetics, Weizmann Institute of ScienceRehovotIsrael
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195
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Han Y, Lu Y, Zuo Y, Song H, Chou CH, Wang X, Li X, Li L, Niu CM, Hou W. Substitutive proprioception feedback of a prosthetic wrist by electrotactile stimulation. Front Neurosci 2023; 17:1135687. [PMID: 36895418 PMCID: PMC9989268 DOI: 10.3389/fnins.2023.1135687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Accepted: 02/01/2023] [Indexed: 02/25/2023] Open
Abstract
Objective Sensory feedback of upper-limb prostheses is widely desired and studied. As important components of proprioception, position, and movement feedback help users to control prostheses better. Among various feedback methods, electrotactile stimulation is a potential method for coding proprioceptive information of a prosthesis. This study was motivated by the need for proprioception information for a prosthetic wrist. The flexion-extension (FE) position and movement information of the prosthetic wrist are transmitted back to the human body through multichannel electrotactile stimulation. Approach We developed an electrotactile scheme to encode the FE position and movement of the prosthetic wrist and designed an integrated experimental platform. A preliminary experiment on the sensory threshold and discomfort threshold was performed. Then, two proprioceptive feedback experiments were performed: a position sense experiment (Exp 1) and a movement sense experiment (Exp 2). Each experiment included a learning session and a test session. The success rate (SR) and discrimination reaction time (DRT) were analyzed to evaluate the recognition effect. The acceptance of the electrotactile scheme was evaluated by a questionnaire. Main results Our results showed that the average position SRs of five able-bodied subjects, amputee 1, and amputee 2 were 83.78, 97.78, and 84.44%, respectively. The average movement SR, and the direction and range SR of wrist movement in five able-bodied subjects were 76.25, 96.67%, respectively. Amputee 1 and amputee 2 had movement SRs of 87.78 and 90.00% and direction and range SRs of 64.58 and 77.08%, respectively. The average DRT of five able-bodied subjects was less than 1.5 s and that of amputees was less than 3.5 s. Conclusion The results indicate that after a short period of learning, the subjects can sense the position and movement of wrist FE. The proposed substitutive scheme has the potential for amputees to sense a prosthetic wrist, thus enhancing the human-machine interaction.
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Affiliation(s)
- Yichen Han
- Biomedical Engineering Department, Bioengineering College, Chongqing University, Chongqing, China
| | - Yinping Lu
- Biomedical Engineering Department, Bioengineering College, Chongqing University, Chongqing, China
| | - Yufeng Zuo
- Biomedical Engineering Department, Bioengineering College, Chongqing University, Chongqing, China
| | - Hongliang Song
- Biomedical Engineering Department, Bioengineering College, Chongqing University, Chongqing, China
| | - Chih-Hong Chou
- Laboratory of Neurorehabilitation Engineering, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Xing Wang
- Biomedical Engineering Department, Bioengineering College, Chongqing University, Chongqing, China
| | - Xiangxin Li
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences (CAS), Shenzhen, Guangdong, China
| | - Lei Li
- Department of Rehabilitation, Southwest Hospital, Army Medical University, Chongqing, China
| | - Chuanxin M Niu
- Department of Rehabilitation Medicine, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Wensheng Hou
- Biomedical Engineering Department, Bioengineering College, Chongqing University, Chongqing, China
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196
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Yunoki K, Watanabe T, Matsumoto T, Kuwabara T, Horinouchi T, Ito K, Ishida H, Kirimoto H. Cutaneous information processing differs with load type during isometric finger abduction. PLoS One 2022; 17:e0279477. [PMID: 36548285 PMCID: PMC9778995 DOI: 10.1371/journal.pone.0279477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022] Open
Abstract
During submaximal isometric contraction, there are two different load types: maintenance of a constant limb angle while supporting an inertial load (position task) and maintenance of a constant force by pushing against a rigid restraint (force task). Previous studies demonstrated that performing the position task requires more proprioceptive information. The purpose of this study was to investigate whether there would be a difference in cutaneous information processing between the position and force tasks by assessing the gating effect, which is reduction of amplitude of somatosensory evoked potentials (SEPs), and cutaneomuscular reflex (CMR). Eighteen healthy adults participated in this study. They contracted their right first dorsal interosseous muscle by abducting their index finger to produce a constant force against a rigid restraint that was 20% maximum voluntary contraction (force task), or to maintain a target position corresponding to 10° abduction of the metacarpophalangeal joint while supporting a load equivalent to 20% maximum voluntary contraction (position task). During each task, electrical stimulation was applied to the digital nerves of the right index finger, and SEPs and CMR were recorded from C3' of the International 10-20 system and the right first dorsal interosseous muscle, respectively. Reduction of the amplitude of N33 component of SEPs was significantly larger during the force than position task. In addition, the E2 amplitude of CMR was significantly greater for the force than position task. These findings suggest that cutaneous information processing differs with load type during static muscle contraction.
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Affiliation(s)
- Keisuke Yunoki
- Department of Sensorimotor Neuroscience, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Tatsunori Watanabe
- Department of Sensorimotor Neuroscience, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
- Faculty of Health Sciences, Aomori University of Health and Welfare, Aomori, Japan
| | - Takuya Matsumoto
- Department of Sensorimotor Neuroscience, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
- Research Fellow of Japan Society for the Promotion of Science, Chiyoda-ku, Japan
| | - Takayuki Kuwabara
- Department of Sensorimotor Neuroscience, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
- Department of Rehabilitation, Uonuma Kikan Hospital, Minamiuonuma, Niigata, Japan
| | - Takayuki Horinouchi
- Department of Sensorimotor Neuroscience, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kanami Ito
- Department of Sensorimotor Neuroscience, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Haruki Ishida
- Department of Sensorimotor Neuroscience, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hikari Kirimoto
- Department of Sensorimotor Neuroscience, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
- * E-mail:
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197
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Khan MN, Cherukuri P, Negro F, Rajput A, Fabrowski P, Bansal V, Lancelin C, Lee TI, Bian Y, Mayer WP, Akay T, Müller D, Bonn S, Farina D, Marquardt T. ERR2 and ERR3 promote the development of gamma motor neuron functional properties required for proprioceptive movement control. PLoS Biol 2022; 20:e3001923. [PMID: 36542664 PMCID: PMC9815657 DOI: 10.1371/journal.pbio.3001923] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 01/05/2023] [Accepted: 11/16/2022] [Indexed: 12/24/2022] Open
Abstract
The ability of terrestrial vertebrates to effectively move on land is integrally linked to the diversification of motor neurons into types that generate muscle force (alpha motor neurons) and types that modulate muscle proprioception, a task that in mammals is chiefly mediated by gamma motor neurons. The diversification of motor neurons into alpha and gamma types and their respective contributions to movement control have been firmly established in the past 7 decades, while recent studies identified gene expression signatures linked to both motor neuron types. However, the mechanisms that promote the specification of gamma motor neurons and/or their unique properties remained unaddressed. Here, we found that upon selective loss of the orphan nuclear receptors ERR2 and ERR3 (also known as ERRβ, ERRγ or NR3B2, NR3B3, respectively) in motor neurons in mice, morphologically distinguishable gamma motor neurons are generated but do not acquire characteristic functional properties necessary for regulating muscle proprioception, thus disrupting gait and precision movements. Complementary gain-of-function experiments in chick suggest that ERR2 and ERR3 could operate via transcriptional activation of neural activity modulators to promote a gamma motor neuron biophysical signature of low firing thresholds and high firing rates. Our work identifies a mechanism specifying gamma motor neuron functional properties essential for the regulation of proprioceptive movement control.
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Affiliation(s)
- Mudassar N. Khan
- Interfaculty Chair for Neurobiological Research, RWTH Aachen University: Medical Faculty (UKA), Clinic for Neurology & Faculty for Mathematics, Computer and Natural Sciences, Institute for Biology 2, Aachen, Germany
- Developmental Neurobiology Laboratory, European Neuroscience Institute (ENI-G), Göttingen, Germany
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Berlin, Germany
- * E-mail: (MNK); (TM)
| | - Pitchaiah Cherukuri
- Interfaculty Chair for Neurobiological Research, RWTH Aachen University: Medical Faculty (UKA), Clinic for Neurology & Faculty for Mathematics, Computer and Natural Sciences, Institute for Biology 2, Aachen, Germany
- Developmental Neurobiology Laboratory, European Neuroscience Institute (ENI-G), Göttingen, Germany
- SRM University Andhra Pradesh, Mangalagiri-Mandal, Neeru Konda, Amaravati, Andhra Pradesh, India
| | - Francesco Negro
- Department of Clinical and Experimental Sciences, Università degli Studi di Brescia, Brescia, Italy
| | - Ashish Rajput
- University Medical Center Hamburg Eppendorf, Center for Molecular Neurobiology Hamburg (ZMNH), Institute of Medical Systems Biology, Hamburg, Germany
- Maximon AG, Zug, Switzerland
| | - Piotr Fabrowski
- Interfaculty Chair for Neurobiological Research, RWTH Aachen University: Medical Faculty (UKA), Clinic for Neurology & Faculty for Mathematics, Computer and Natural Sciences, Institute for Biology 2, Aachen, Germany
- Developmental Neurobiology Laboratory, European Neuroscience Institute (ENI-G), Göttingen, Germany
| | - Vikas Bansal
- University Medical Center Hamburg Eppendorf, Center for Molecular Neurobiology Hamburg (ZMNH), Institute of Medical Systems Biology, Hamburg, Germany
- Biomedical Data Science and Machine Learning Group, German Center for Neurodegenerative Diseases, Tübingen, Germany
| | - Camille Lancelin
- Developmental Neurobiology Laboratory, European Neuroscience Institute (ENI-G), Göttingen, Germany
| | - Tsung-I Lee
- Developmental Neurobiology Laboratory, European Neuroscience Institute (ENI-G), Göttingen, Germany
| | - Yehan Bian
- Interfaculty Chair for Neurobiological Research, RWTH Aachen University: Medical Faculty (UKA), Clinic for Neurology & Faculty for Mathematics, Computer and Natural Sciences, Institute for Biology 2, Aachen, Germany
- Developmental Neurobiology Laboratory, European Neuroscience Institute (ENI-G), Göttingen, Germany
| | - William P. Mayer
- Atlantic Mobility Action Project, Brain Repair Centre, Department of Medical Neuroscience, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Turgay Akay
- Atlantic Mobility Action Project, Brain Repair Centre, Department of Medical Neuroscience, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Daniel Müller
- Interfaculty Chair for Neurobiological Research, RWTH Aachen University: Medical Faculty (UKA), Clinic for Neurology & Faculty for Mathematics, Computer and Natural Sciences, Institute for Biology 2, Aachen, Germany
- Developmental Neurobiology Laboratory, European Neuroscience Institute (ENI-G), Göttingen, Germany
| | - Stefan Bonn
- University Medical Center Hamburg Eppendorf, Center for Molecular Neurobiology Hamburg (ZMNH), Institute of Medical Systems Biology, Hamburg, Germany
| | - Dario Farina
- Department of Bioengineering, Imperial College London, Royal School of Mines, London, United Kingdom
| | - Till Marquardt
- Interfaculty Chair for Neurobiological Research, RWTH Aachen University: Medical Faculty (UKA), Clinic for Neurology & Faculty for Mathematics, Computer and Natural Sciences, Institute for Biology 2, Aachen, Germany
- Developmental Neurobiology Laboratory, European Neuroscience Institute (ENI-G), Göttingen, Germany
- * E-mail: (MNK); (TM)
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198
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Texture recognition based on multi-sensory integration of proprioceptive and tactile signals. Sci Rep 2022; 12:21690. [PMID: 36522364 PMCID: PMC9755227 DOI: 10.1038/s41598-022-24640-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 11/17/2022] [Indexed: 12/23/2022] Open
Abstract
The sense of touch plays a fundamental role in enabling us to interact with our surrounding environment. Indeed, the presence of tactile feedback in prostheses greatly assists amputees in doing daily tasks. In this line, the present study proposes an integration of artificial tactile and proprioception receptors for texture discrimination under varying scanning speeds. Here, we fabricated a soft biomimetic fingertip including an 8 × 8 array tactile sensor and a piezoelectric sensor to mimic Merkel, Meissner, and Pacinian mechanoreceptors in glabrous skin, respectively. A hydro-elastomer sensor was fabricated as an artificial proprioception sensor (muscle spindles) to assess the instantaneous speed of the biomimetic fingertip. In this study, we investigated the concept of the complex receptive field of RA-I and SA-I afferents for naturalistic textures. Next, to evaluate the synergy between the mechanoreceptors and muscle spindle afferents, ten naturalistic textures were manipulated by a soft biomimetic fingertip at six different speeds. The sensors' outputs were converted into neuromorphic spike trains to mimic the firing pattern of biological mechanoreceptors. These spike responses are then analyzed using machine learning classifiers and neural coding paradigms to explore the multi-sensory integration in real experiments. This synergy between muscle spindle and mechanoreceptors in the proposed neuromorphic system represents a generalized texture discrimination scheme and interestingly irrespective of the scanning speed.
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199
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Lv X, Gao F, Cao X. Skeletal interoception in bone homeostasis and pain. Cell Metab 2022; 34:1914-1931. [PMID: 36257317 PMCID: PMC9742337 DOI: 10.1016/j.cmet.2022.09.025] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 09/07/2022] [Accepted: 09/26/2022] [Indexed: 01/24/2023]
Abstract
Accumulating evidence indicates that interoception maintains proper physiological status and orchestrates metabolic homeostasis by regulating feeding behaviors, glucose balance, and lipid metabolism. Continuous skeletal remodeling consumes a tremendous amount of energy to provide skeletal scaffolding, support muscle movement, store vital minerals, and maintain a niche for hematopoiesis, which are processes that also contribute to overall metabolic balance. Although skeletal innervation has been described for centuries, recent work has shown that skeletal metabolism is tightly regulated by the nervous system and that skeletal interoception regulates bone homeostasis. Here, we provide a general discussion of interoception and its effects on the skeleton and whole-body metabolism. We also discuss skeletal interoception-mediated regulation in the context of pathological conditions and skeletal pain as well as future challenges to our understanding of these process and how they can be leveraged for more effective therapy.
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Affiliation(s)
- Xiao Lv
- Center for Musculoskeletal Research, Department of Orthopaedic Surgery and Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD 21205, USA
| | - Feng Gao
- Center for Musculoskeletal Research, Department of Orthopaedic Surgery and Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD 21205, USA
| | - Xu Cao
- Center for Musculoskeletal Research, Department of Orthopaedic Surgery and Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD 21205, USA.
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200
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Sensory Interaction Balance and Limits of Stability in Neck Pain: Comparison of Traumatic and Non-traumatic Patients. JOURNAL OF BASIC AND CLINICAL HEALTH SCIENCES 2022. [DOI: 10.30621/jbachs.1172228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Background and Purpose: A variety of sensory-motor changes are reported in both the traumatic and non-traumatic neck pain. However, it is still unclear whether there is a significant difference between individuals with traumatic neck pain and those with non-traumatic in terms of postural control. The aim of this cross-sectional study was to investigate whether there was a difference between individuals with traumatic pain and non-traumatic neck pain in terms of postural control and disability.
Methods: Ninety-two patients with chronic neck pain were grouped according to the onset of pain. Clinical test of sensory interaction balance (CTSIB) and limits of stability (LOS) test were used for postural control assessment. The Numeric Rating Scale and Neck Pain Disability Index (NPDI) were used to measure pain intensity and disability, respectively. Mann-Whitney U test was used to compare groups.
Results: There were no significant differences between groups in terms of LOS, CTSIB and NPDI scores (p > 0.05).
Conclusion: The results of this study suggest that postural control and disability do not differ between patients with traumatic and non-traumatic neck pain. Therefore, from a clinical perspective, postural control and disability should be evaluated without considering trauma history in patients with neck pain.
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