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Seitz S, Schuster-Amft C, Wandel J, Bonati LH, Parmar K, Gerth HU, Behrendt F. Effect of concurrent action observation, peripheral nerve stimulation and motor imagery on dexterity in patients after stroke: a pilot study. Sci Rep 2024; 14:14858. [PMID: 38937566 PMCID: PMC11211322 DOI: 10.1038/s41598-024-65911-7] [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: 02/05/2024] [Accepted: 06/25/2024] [Indexed: 06/29/2024] Open
Abstract
Research to improve and expand treatment options for motor impairment after stroke remains an important issue in rehabilitation as the reduced ability to move affected limbs is still a limiting factor in the selection of training content for stroke patients. The combination of action observation and peripheral nerve stimulation is a promising method for inducing increased excitability and plasticity in the primary motor cortex of healthy subjects. In addition, as reported in the literature, the use of action observation and motor imagery in conjunction has an advantage over the use of one or the other alone in terms of the activation of motor-related brain regions. The aim of the pilot study was thus to combine these findings into a multimodal approach and to evaluate the potential impact of the concurrent application of the three methods on dexterity in stroke patients. The paradigm developed accordingly was tested with 10 subacute patients, in whom hand dexterity, thumb-index pinch force and thumb tapping speed were measured for a baseline assessment and directly before and after the single intervention. During the 10-min session, patients were instructed to watch a repetitive thumb-index finger tapping movement displayed on a monitor and to imagine the sensations that would arise from physically performing the same motion. They were also repeatedly electrically stimulated at the wrist on the motorically more affected body side and asked to place their hand behind the monitor for the duration of the session to support integration of the displayed hand into their own body schema. The data provide a first indication of a possible immediate effect of a single application of this procedure on the dexterity in patients after stroke.
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Affiliation(s)
- Sarina Seitz
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland
- Institute of Physiotherapy, Zurich University of Applied Sciences, Winterthur, Switzerland
| | - Corina Schuster-Amft
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland
- Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
- School of Engineering and Computer Science, Bern University of Applied Sciences, Biel, Switzerland
| | - Jasmin Wandel
- Institute for Optimization and Data Analysis, Bern University of Applied Sciences, Biel, Switzerland
| | - Leo H Bonati
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland
- Department of Neurology, University Hospital Basel, Basel, Switzerland
- Department of Clinical Research, University of Basel, Basel, Switzerland
| | - Katrin Parmar
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland
- Department of Neurology, University Hospital Basel, Basel, Switzerland
| | - Hans Ulrich Gerth
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland
- Department of Medicine, University Hospital Münster, Münster, Germany
| | - Frank Behrendt
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland.
- School of Engineering and Computer Science, Bern University of Applied Sciences, Biel, Switzerland.
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Dupont W, Papaxanthis C, Madden-Lombardi C, Lebon F. Explicit and implicit motor simulations are impaired in individuals with aphantasia. Brain Commun 2024; 6:fcae072. [PMID: 38515440 PMCID: PMC10957132 DOI: 10.1093/braincomms/fcae072] [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: 01/06/2023] [Revised: 01/11/2024] [Accepted: 03/13/2024] [Indexed: 03/23/2024] Open
Abstract
Individuals with aphantasia report having difficulties or an inability to generate visual images of objects or events. So far, there is no evidence showing that this condition also impacts the motor system and the generation of motor simulations. We probed the neurophysiological marker of aphantasia during explicit and implicit forms of motor simulation, i.e. motor imagery and action observation, respectively. We tested a group of individuals without any reported imagery deficits (phantasics) as well as a group of individuals self-reporting the inability to mentally simulate images or movements (aphantasics). We instructed the participants to explicitly imagine a maximal pinch movement in the visual and kinaesthetic modalities and to observe a video showing a pinch movement. By means of transcranial magnetic stimulation, we triggered motor-evoked potentials in the target right index finger. As expected, the amplitude of motor-evoked potentials, a marker of corticospinal excitability, increased for phantasics during kinaesthetic motor imagery and action observation relative to rest but not during visual motor imagery. Interestingly, the amplitude of motor-evoked potentials did not increase in any of the conditions for the group of aphantasics. This result provides neurophysiological evidence that individuals living with aphantasia have a real deficit in activating the motor system during motor simulations.
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Affiliation(s)
- William Dupont
- UFR des Sciences du Sport, INSERM UMR1093-CAPS, Université Bourgogne, Dijon F-21000, France
| | | | - Carol Madden-Lombardi
- UFR des Sciences du Sport, INSERM UMR1093-CAPS, Université Bourgogne, Dijon F-21000, France
- Centre National de la Recherche Scientifique (CNRS), Paris, France
| | - Florent Lebon
- UFR des Sciences du Sport, INSERM UMR1093-CAPS, Université Bourgogne, Dijon F-21000, France
- Institut Universitaire de France (IUF), Paris, France
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3
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Lu W, Jin X, Chen J, Liu G, Wang P, Hu X, Xu D, Liu B, Zhang J. Prefrontal cortex activity of active motion, cyclic electrical muscle stimulation, assisted motion, and imagery of wrist extension in stroke using fNIRS. J Stroke Cerebrovasc Dis 2023; 32:107456. [PMID: 37922683 DOI: 10.1016/j.jstrokecerebrovasdis.2023.107456] [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: 04/10/2023] [Revised: 10/19/2023] [Accepted: 10/28/2023] [Indexed: 11/07/2023] Open
Abstract
OBJECTIVES This study aimed to determine whether the prefrontal cortex (PFC) was activated during four training approaches for wrist extension in patients with stroke, including active motion, cyclic electrical muscle stimulation (EMS), assisted motion, and motor imagery (MI). MATERIALS AND METHODS We conducted a cross-sectional study involving 16 patients with stroke, and adopted functional near-infrared spectroscopy (fNIRS) to observe PFC activity during four treatment paradigms. The beta value of 53 channels in fNIRS under each paradigm, compared to the baseline, was evaluated using single sample t-test. The one-way analysis of variance with post hoc analysis was employed to compare the difference of significantly activated channels among four treatment paradigms. RESULTS This study revealed that the active motion (t values ranging from 2.399 to 4.368, p values <0.05), as well as MI of wrist extension (t values ranging from 2.161 to 4.378, p values <0.05), significantly increased HBO concentration across the entire PFC. The cyclic EMS enhanced the activation of Broca's area and frontal pole (FP) (t values ranging from -2.540 to 2.303, p values <0.05). The assisted motion induced significant activation in Broca's area, dorsolateral prefrontal cortex, and FP (t values ranging from -2.226 to 3.056, p values <0.05). The difference in ΔHBO among the four tasks was seen in Broca's area, FP, and frontal eye field. CONCLUSIONS Active wrist extension and MI activate most PFC areas, whereas assisted motion and single-use of cyclic EMS have limited effectiveness for PFC activation in stroke patients.
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Affiliation(s)
- Weiwei Lu
- Department of Rehabilitation Medicine, Shanghai Geriatric Medical Center, Shanghai 201104, China
| | - Xulun Jin
- Department of Rehabilitation Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Jing Chen
- Department of Neurology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Guanghua Liu
- Department of Rehabilitation Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Ping Wang
- Department of Rehabilitation Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Xiangjun Hu
- Department of Rehabilitation Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Dongshen Xu
- Department of Rehabilitation Medicine, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Bangzhong Liu
- Department of Rehabilitation Medicine, Shanghai Geriatric Medical Center, Shanghai 201104, China; Department of Rehabilitation Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Jian Zhang
- Department of Rehabilitation Medicine, Shanghai Geriatric Medical Center, Shanghai 201104, China; Department of Rehabilitation Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
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4
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Kwon S, Kim J, Kim T. Neuropsychological Activations and Networks While Performing Visual and Kinesthetic Motor Imagery. Brain Sci 2023; 13:983. [PMID: 37508915 PMCID: PMC10377687 DOI: 10.3390/brainsci13070983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/18/2023] [Accepted: 06/19/2023] [Indexed: 07/30/2023] Open
Abstract
This study aimed to answer the questions 'What are the neural networks and mechanisms involved in visual and kinesthetic motor imagery?', and 'Is part of cognitive processing included during visual and kinesthetic motor imagery?' by investigating the neurophysiological networks and activations during visual and kinesthetic motor imagery using motor imagery tasks (golf putting). The experiment was conducted with 19 healthy adults. Functional magnetic resonance imaging (fMRI) was used to examine neural activations and networks during visual and kinesthetic motor imagery using golf putting tasks. The findings of the analysis on cerebral activation patterns based on the two distinct types of motor imagery indicate that the posterior lobe, occipital lobe, and limbic lobe exhibited activation, and the right hemisphere was activated during the process of visual motor imagery. The activation of the temporal lobe and the parietal lobe were observed during the process of kinesthetic motor imagery. This study revealed that visual motor imagery elicited stronger activation in the right frontal lobe, whereas kinesthetic motor imagery resulted in greater activation in the left frontal lobe. It seems that kinesthetic motor imagery activates the primary somatosensory cortex (BA 2), the secondary somatosensory cortex (BA 5 and 7), and the temporal lobe areas and induces human sensibility. The present investigation evinced that the neural network and the regions of the brain that are activated exhibit variability contingent on the category of motor imagery.
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Affiliation(s)
- Sechang Kwon
- Department of Humanities & Arts, Korea Science Academy of KAIST, 105-47, Baegyanggwanmun-ro, Busanjin-gu, Busan 47162, Republic of Korea
- Global Institute for Talented Education, Korea Advanced Institute of Science and Technology (KAIST), 291, Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Jingu Kim
- Department of Physical Education, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
| | - Teri Kim
- Institute of Sports Science, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
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Behrendt F, Le-Minh M, Schuster-Amft C. Influence of combined action observation and motor imagery of walking on lower limb reflex modulation in patients after stroke-preliminary results. BMC Res Notes 2022; 15:166. [PMID: 35562777 PMCID: PMC9101860 DOI: 10.1186/s13104-022-06057-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 04/28/2022] [Indexed: 11/10/2022] Open
Abstract
Objective The combined use of action observation and motor imagery (AOMI) is a promising technique in neurorehabilitation that can be usefully applied in addition to conventional forms of therapy. Previous studies with healthy participants showed that the mere passive observation of walking results in a phase-dependent reflex modulation in the tibialis anterior muscle that resembles the pattern occurring when walking. In patients after stroke, a similar reflex modulation was found in several lower limb muscles during the real execution of walking, but responses were blunted. To clarify whether and how lower limb reflex responses are also modulated in such patients during the combined synchronous observation and imagery of walking, medium-latency cutaneous reflexes from the tibialis anterior muscle were measured. We compared the reflex responses of seven patients after stroke during the AOMI of walking from two different conditions: (a) elicited during the end stance phase and (b) during the end swing phase, both normalized to a baseline condition. Results So far, using the identical methodological set-up as in our study with healthy individuals, we could not find any noteworthy reflex response modulation. The study was registered with the German Clinical Trials Register (DRKS00028255). Trial registration : The study was registered with the German Clinical Trials Register: DRKS00028255.
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Affiliation(s)
- Frank Behrendt
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland. .,Department of Engineering and Information Technology, Bern University of Applied Sciences, Bern, Switzerland.
| | - Monika Le-Minh
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland.,Department of Health, Bern University of Applied Sciences, Bern, Switzerland
| | - Corina Schuster-Amft
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland.,Department of Engineering and Information Technology, Bern University of Applied Sciences, Bern, Switzerland.,Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
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6
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Giulia L, Adolfo V, Julie C, Quentin D, Simon B, Fleury M, Leveque-Le Bars E, Bannier E, Lécuyer A, Barillot C, Bonan I. The impact of neurofeedback on effective connectivity networks in chronic stroke patients: an exploratory study. J Neural Eng 2021; 18. [PMID: 34551403 DOI: 10.1088/1741-2552/ac291e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 09/22/2021] [Indexed: 11/12/2022]
Abstract
Objective.In this study, we assessed the impact of electroencephalography-functional magnetic resonance imaging (EEG-fMRI) neurofeedback (NF) on connectivity strength and direction in bilateral motor cortices in chronic stroke patients. Most of the studies using NF or brain computer interfaces for stroke rehabilitation have assessed treatment effects focusing on successful activation of targeted cortical regions. However, given the crucial role of brain network reorganization for stroke recovery, our broader aim was to assess connectivity changes after an NF training protocol targeting localized motor areas.Approach.We considered changes in fMRI connectivity after a multisession EEG-fMRI NF training targeting ipsilesional motor areas in nine stroke patients. We applied the dynamic causal modeling and parametric empirical Bayes frameworks for the estimation of effective connectivity changes. We considered a motor network including both ipsilesional and contralesional premotor, supplementary and primary motor areas.Main results.Our results indicate that NF upregulation of targeted areas (ipsilesional supplementary and primary motor areas) not only modulated activation patterns, but also had a more widespread impact on fMRI bilateral motor networks. In particular, inter-hemispheric connectivity between premotor and primary motor regions decreased, and ipsilesional self-inhibitory connections were reduced in strength, indicating an increase in activation during the NF motor task.Significance.To the best of our knowledge, this is the first work that investigates fMRI connectivity changes elicited by training of localized motor targets in stroke. Our results open new perspectives in the understanding of large-scale effects of NF training and the design of more effective NF strategies, based on the pathophysiology underlying stroke-induced deficits.
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Affiliation(s)
- Lioi Giulia
- Univ Rennes, Inria, CNRS, Inserm, IRISA, Rennes, France.,IMT Atlantique, Lab-STICC, UMR CNRS 6285, Brest, F-29238, France
| | - Veliz Adolfo
- Univ Rennes, Inria, CNRS, Inserm, IRISA, Rennes, France
| | | | - Duché Quentin
- Univ Rennes, Inria, CNRS, Inserm, IRISA, Rennes, France.,Department of Physical and Rehabilitation Medicine, CHU Rennes, Rennes, France
| | - Butet Simon
- Department of Physical and Rehabilitation Medicine, CHU Rennes, Rennes, France
| | - Mathis Fleury
- Univ Rennes, Inria, CNRS, Inserm, IRISA, Rennes, France
| | | | - Elise Bannier
- Univ Rennes, Inria, CNRS, Inserm, IRISA, Rennes, France.,Department of Radiology, CHU Rennes, Rennes, France
| | | | | | - Isabelle Bonan
- Department of Physical and Rehabilitation Medicine, CHU Rennes, Rennes, France
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7
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Abstract
The cytoarchitectonic properties of the primary motor cortex have shown two distinct sub-regions: Anterior Broadmann area 4 (BA4a) and Posterior Broadmann area 4 (BA4p). Some previous studies have suggested that these two sub-regions are functionally different and showed that in few fMRI experiments, these sub-regions may have different roles in brain functions. Resting-state fMRI (rsfMRI) is advanced technique that allows investigating in detail the functional connectivity and provides a greater understanding of the physiological behavior of different brain regions. In this study, 198 healthy subjects were examined using a region-based rsfMRI analysis to investigate whether BA4a and BA4p have similar or different connections to other brain networks. The finding shows that indeed these two sub-regions have distinct connectivity to different brain networks. BA4a has a greater connection to motor-related areas while BA4p has connections to nonmotor-related areas (such as sensory, attentional, and higher order regions), suggesting that these two sub-regions should be considered as two separate regions of interests.
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8
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Neural interfacing architecture enables enhanced motor control and residual limb functionality postamputation. Proc Natl Acad Sci U S A 2021; 118:2019555118. [PMID: 33593940 PMCID: PMC7936324 DOI: 10.1073/pnas.2019555118] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Despite advancements in prosthetic technologies, persons with amputation today suffer great diminution in mobility and quality of life. This is largely due to an outdated amputation paradigm that precludes efficacious communication between the residual limb and prosthesis. An amputation method utilizing agonist–antagonist myoneural interfaces (AMIs) constructs neuromuscular substrates in the residual limb to avail enhanced sensorimotor signaling. In our study, subjects with AMI amputation demonstrate improved motor control, phantom sensations, range of motion, and decreased pain when compared to patients with traditional amputation. With the demonstrated increases in motor coordination and position differentiation, our results suggest that patients with AMI amputation will be able to more efficaciously control bionic prostheses. Despite advancements in prosthetic technologies, patients with amputation today suffer great diminution in mobility and quality of life. We have developed a modified below-knee amputation (BKA) procedure that incorporates agonist–antagonist myoneural interfaces (AMIs), which surgically preserve and couple agonist–antagonist muscle pairs for the subtalar and ankle joints. AMIs are designed to restore physiological neuromuscular dynamics, enable bidirectional neural signaling, and offer greater neuroprosthetic controllability compared to traditional amputation techniques. In this prospective, nonrandomized, unmasked study design, 15 subjects with AMI below-knee amputation (AB) were matched with 7 subjects who underwent a traditional below-knee amputation (TB). AB subjects demonstrated significantly greater control of their residual limb musculature, production of more differentiable efferent control signals, and greater precision of movement compared to TB subjects (P < 0.008). This may be due to the presence of greater proprioceptive inputs facilitated by the significantly higher fascicle strains resulting from coordinated muscle excursion in AB subjects (P < 0.05). AB subjects reported significantly greater phantom range of motion postamputation (AB: 12.47 ± 2.41, TB: 10.14 ± 1.45 degrees) when compared to TB subjects (P < 0.05). Furthermore, AB subjects also reported less pain (12.25 ± 5.37) than TB subjects (17.29 ± 10.22) and a significant reduction when compared to their preoperative baseline (P < 0.05). Compared with traditional amputation, the construction of AMIs during amputation confers the benefits of enhanced physiological neuromuscular dynamics, proprioception, and phantom limb perception. Subjects’ activation of the AMIs produces more differentiable electromyography (EMG) for myoelectric prosthesis control and demonstrates more positive clinical outcomes.
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9
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Srinivasan SS, Tuckute G, Zou J, Gutierrez-Arango S, Song H, Barry RL, Herr HM. Agonist-antagonist myoneural interface amputation preserves proprioceptive sensorimotor neurophysiology in lower limbs. Sci Transl Med 2021; 12:12/573/eabc5926. [PMID: 33298564 DOI: 10.1126/scitranslmed.abc5926] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 07/22/2020] [Accepted: 10/06/2020] [Indexed: 12/12/2022]
Abstract
The brain undergoes marked changes in function and functional connectivity after limb amputation. The agonist-antagonist myoneural interface (AMI) amputation is a procedure that restores physiological agonist-antagonist muscle relationships responsible for proprioceptive sensory feedback to enable greater motor control. We compared results from the functional neuroimaging of individuals (n = 29) with AMI amputation, traditional amputation, and no amputation. Individuals with traditional amputation demonstrated a significant decrease in proprioceptive activity, measured by activation of Brodmann area 3a, whereas functional activation in individuals with AMIs was not significantly different from controls with no amputation (P < 0.05). The degree of proprioceptive activity in the brain strongly correlated with fascicle activity in the peripheral muscles and performance on motor tasks (P < 0.05), supporting the mechanistic basis of the AMI procedure. These results suggest that surgical techniques designed to restore proprioceptive peripheral neuromuscular constructs result in desirable central sensorimotor plasticity.
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Affiliation(s)
- Shriya S Srinivasan
- Harvard-MIT Program in Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. .,MIT Center for Extreme Bionics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA 02129, USA
| | - Greta Tuckute
- MIT Center for Extreme Bionics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Jasmine Zou
- MIT Center for Extreme Bionics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Samantha Gutierrez-Arango
- MIT Center for Extreme Bionics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA 02129, USA
| | - Hyungeun Song
- Harvard-MIT Program in Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,MIT Center for Extreme Bionics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA 02129, USA
| | - Robert L Barry
- Harvard-MIT Program in Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. .,Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA 02129, USA.,Department of Radiology, Harvard Medical School, Boston, MA 02115, USA
| | - Hugh M Herr
- MIT Center for Extreme Bionics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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10
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Alahmadi AAS, Pardini M, Samson RS, D’Angelo E, Friston KJ, Toosy AT, Gandini Wheeler-Kingshott CAM. Blood Oxygenation Level-Dependent Response to Multiple Grip Forces in Multiple Sclerosis: Going Beyond the Main Effect of Movement in Brodmann Area 4a and 4p. Front Cell Neurosci 2021; 15:616028. [PMID: 33981201 PMCID: PMC8109244 DOI: 10.3389/fncel.2021.616028] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 03/08/2021] [Indexed: 11/13/2022] Open
Abstract
This study highlights the importance of looking beyond the main effect of movement to study alterations in functional response in the presence of central nervous system pathologies such as multiple sclerosis (MS). Data show that MS selectively affects regional BOLD (blood oxygenation level dependent) responses to variable grip forces (GF). It is known that the anterior and posterior BA 4 areas (BA 4a and BA 4p) are anatomically and functionally distinct. It has also been shown in healthy volunteers that there are linear (first order, typical of BA 4a) and nonlinear (second to fourth order, typical of BA 4p) BOLD responses to different levels of GF applied during a dynamic motor paradigm. After modeling the BOLD response with a polynomial expansion of the applied GFs, the particular case of BA 4a and BA 4p were investigated in healthy volunteers (HV) and MS subjects. The main effect of movement (zeroth order) analysis showed that the BOLD signal is greater in MS compared with healthy volunteers within both BA 4 subregions. At higher order, BOLD-GF responses were similar in BA 4a but showed a marked alteration in BA 4p of MS subjects, with those with greatest disability showing the greatest deviations from the healthy response profile. Therefore, the different behaviors in HV and MS could only be uncovered through a polynomial analysis looking beyond the main effect of movement into the two BA 4 subregions. Future studies will investigate the source of this pathophysiology, combining the present fMRI paradigm with blood perfusion and nonlinear neuronal response analysis.
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Affiliation(s)
- Adnan A. S. Alahmadi
- Department of Diagnostic Radiology, Faculty of Applied Medical Science, King Abdulaziz University, Jeddah, Saudi Arabia
- NMR Research Unit, Department of Neuroinflammation, Queen Square MS Centre, UCL Queen Square Institute of Neurology, London, United Kingdom
| | - Matteo Pardini
- NMR Research Unit, Department of Neuroinflammation, Queen Square MS Centre, UCL Queen Square Institute of Neurology, London, United Kingdom
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy
- IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Rebecca S. Samson
- NMR Research Unit, Department of Neuroinflammation, Queen Square MS Centre, UCL Queen Square Institute of Neurology, London, United Kingdom
| | - Egidio D’Angelo
- Brain Connectivity Center, IRCCS Mondino Foundation, Pavia, Italy
- Department of Brain and Behavioural Sciences, University of Pavia, Pavia, Italy
| | - Karl J. Friston
- Wellcome Centre for Imaging Neuroscience, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom
| | - Ahmed T. Toosy
- NMR Research Unit, Department of Neuroinflammation, Queen Square MS Centre, UCL Queen Square Institute of Neurology, London, United Kingdom
| | - Claudia A. M. Gandini Wheeler-Kingshott
- NMR Research Unit, Department of Neuroinflammation, Queen Square MS Centre, UCL Queen Square Institute of Neurology, London, United Kingdom
- Brain Connectivity Center, IRCCS Mondino Foundation, Pavia, Italy
- Department of Brain and Behavioural Sciences, University of Pavia, Pavia, Italy
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11
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Decoding motor imagery and action planning in the early visual cortex: Overlapping but distinct neural mechanisms. Neuroimage 2020; 218:116981. [DOI: 10.1016/j.neuroimage.2020.116981] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 05/18/2020] [Accepted: 05/19/2020] [Indexed: 11/22/2022] Open
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12
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Hannanu FF, Goundous I, Detante O, Naegele B, Jaillard A. Spatiotemporal patterns of sensorimotor fMRI activity influence hand motor recovery in subacute stroke: A longitudinal task-related fMRI study. Cortex 2020; 129:80-98. [DOI: 10.1016/j.cortex.2020.03.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 11/27/2019] [Accepted: 03/13/2020] [Indexed: 01/01/2023]
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13
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Trentini C, Pagani M, Lauriola M, Tambelli R. Neural Responses to Infant Emotions and Emotional Self-Awareness in Mothers and Fathers during Pregnancy. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E3314. [PMID: 32397541 PMCID: PMC7246792 DOI: 10.3390/ijerph17093314] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 05/07/2020] [Accepted: 05/07/2020] [Indexed: 01/16/2023]
Abstract
Neuroscientific research has largely investigated the neurobiological correlates of maternal and (to a much lesser extent) paternal responsiveness in the post-partum period. In contrast, much less is known about the neural processing of infant emotions during pregnancy. Twenty mothers and 19 fathers were recruited independently during the third trimester of pregnancy. High-density electroencephalography (hdEEG) was recorded while expectant parents passively viewed images representing distressed, ambiguous, happy, and neutral faces of unknown infants. Correlational analyses were performed to detect a link between neural responses to infant facial expressions and emotional self-awareness. In response to infant emotions, mothers and fathers showed similar cerebral activity in regions involved in high-order socio-affective processes. Mothers and fathers also showed different brain activity in premotor regions implicated in high-order motor control, in occipital regions involved in visuo-spatial information processing and visual mental imagery, as well as in inferior parietal regions involved in attention allocation. Low emotional self-awareness negatively correlated with activity in parietal regions subserving empathy in mothers, while it positively correlated with activity in temporal and occipital areas implicated in mentalizing and visual mental imagery in fathers. This study may enlarge knowledge on the neural response to infant emotions during pregnancy.
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Affiliation(s)
- Cristina Trentini
- Department of Dynamic and Clinical Psychology, “Sapienza” University of Rome, 00185 Rome, Italy;
| | - Marco Pagani
- Institute of Cognitive Sciences and Technologies, CNR, 00185 Rome, Italy;
| | - Marco Lauriola
- Department of Social and Developmental Psychology, “Sapienza” University of Rome, 00185 Rome, Italy;
| | - Renata Tambelli
- Department of Dynamic and Clinical Psychology, “Sapienza” University of Rome, 00185 Rome, Italy;
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14
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Hramov AE, Grubov V, Badarin A, Maksimenko VA, Pisarchik AN. Functional Near-Infrared Spectroscopy for the Classification of Motor-Related Brain Activity on the Sensor-Level. SENSORS 2020; 20:s20082362. [PMID: 32326270 PMCID: PMC7219246 DOI: 10.3390/s20082362] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/18/2020] [Accepted: 04/20/2020] [Indexed: 11/21/2022]
Abstract
Sensor-level human brain activity is studied during real and imaginary motor execution using functional near-infrared spectroscopy (fNIRS). Blood oxygenation and deoxygenation spatial dynamics exhibit pronounced hemispheric lateralization when performing motor tasks with the left and right hands. This fact allowed us to reveal biomarkers of hemodynamical response of the motor cortex on the motor execution, and use them for designing a sensing method for classification of the type of movement. The recognition accuracy of real movements is close to 100%, while the classification accuracy of imaginary movements is lower but quite high (at the level of 90%). The advantage of the proposed method is its ability to classify real and imaginary movements with sufficiently high efficiency without the need for recalculating parameters. The proposed system can serve as a sensor of motor activity to be used for neurorehabilitation after severe brain injuries, including traumas and strokes.
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Affiliation(s)
- Alexander E. Hramov
- Neuroscience and Cognitive Technology Laboratory, Center for Technologies in Robotics and Mechatronics Components, Innopolis University, Universitetskaja Str., 1, 420500 Innopolis, Russia; (V.G.); (A.B.); (V.A.M.); (A.N.P.)
- Saratov State Medical University, Bolshaya Kazachya Str., 112, 410012 Saratov, Russia
- Correspondence: ; Tel.: +7-927-123-3294
| | - Vadim Grubov
- Neuroscience and Cognitive Technology Laboratory, Center for Technologies in Robotics and Mechatronics Components, Innopolis University, Universitetskaja Str., 1, 420500 Innopolis, Russia; (V.G.); (A.B.); (V.A.M.); (A.N.P.)
| | - Artem Badarin
- Neuroscience and Cognitive Technology Laboratory, Center for Technologies in Robotics and Mechatronics Components, Innopolis University, Universitetskaja Str., 1, 420500 Innopolis, Russia; (V.G.); (A.B.); (V.A.M.); (A.N.P.)
| | - Vladimir A. Maksimenko
- Neuroscience and Cognitive Technology Laboratory, Center for Technologies in Robotics and Mechatronics Components, Innopolis University, Universitetskaja Str., 1, 420500 Innopolis, Russia; (V.G.); (A.B.); (V.A.M.); (A.N.P.)
| | - Alexander N. Pisarchik
- Neuroscience and Cognitive Technology Laboratory, Center for Technologies in Robotics and Mechatronics Components, Innopolis University, Universitetskaja Str., 1, 420500 Innopolis, Russia; (V.G.); (A.B.); (V.A.M.); (A.N.P.)
- Center for Biomedical Technology, Technical University of Madrid, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
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15
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Kolbaşı EN, Ersoz Huseyinsinoglu B, Erdoğan HA, Çabalar M, Bulut N, Yayla V. What are the determinants of explicit and implicit motor imagery ability in stroke patients?: a controlled study. Somatosens Mot Res 2020; 37:84-91. [PMID: 32228207 DOI: 10.1080/08990220.2020.1741344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Purpose: The purposes of the study were to (a) investigate both explicit and implicit motor imagery ability (MIA) impairment after stroke, (b) examine predictive effects of clinical characteristics for MIA after stroke.Materials and Methods: Forty one patients with stroke (PwS) (mean age 59.41 ± 10.19 years; %41 female) and 36 healthy participants (mean age 62.47 ± 9.29 years; %47 female) completed Chaotic Motor Imagery Assessment-Hand Rotation for implicit MIA and Movement Imagery Questionnaire-3 (MIQ-3) and Box and Block Test (BBT) for explicit MIA. The severity of motor and sensory impairments were determined by the Fugl-Meyer Assessment-Upper Extremity (FMAUE) scores. The Turkish version of Motor Activity Log-28 was used to assess amount of use (AUS) and quality of movement in daily life.Results: Our results indicated that both implicit and explicit MIA (except kinaesthetic imagery of MIQ-3) in PwS were statistically impaired compared to controls (p < 0.05). The sensorimotor impairment level, amount of use and movement quality of the affected upper limb were found to be correlated with MIA in various degrees. Total motor scores in FMAUE and AUS were significant predictors of explicit MIA (p < 0.01). Additionally, explicit MIA scores of stroke subgroups were statistically different between severely and mildly impaired patients, in favour of mildly impaired group (p < 0.05).Conclusion: In conclusion, both motor impairment level and amount of daily use of upper extremity were found to be predictive factors for explicit MIA. Further investigation with brain imaging techniques is needed to explore the validity of these findings in establishing MIA.
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Affiliation(s)
- Esma Nur Kolbaşı
- Department of Physiotherapy and Rehabilitation, Istanbul Medeniyet University, Istanbul, Turkey.,Institute of Graduate Studies, Physiotherapy and Rehabilitation Department, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - Burcu Ersoz Huseyinsinoglu
- Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - Hacı Ali Erdoğan
- Department of Neurology, Istanbul Bakırköy Dr. Sadi Konuk Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Murat Çabalar
- Department of Neurology, Istanbul Bakırköy Dr. Sadi Konuk Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Nurgül Bulut
- Department of Biostatistics and Medical Informatics, Istanbul Medeniyet University, Istanbul, Turkey
| | - Vildan Yayla
- Department of Neurology, Istanbul Bakırköy Dr. Sadi Konuk Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
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16
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Lioi G, Butet S, Fleury M, Bannier E, Lécuyer A, Bonan I, Barillot C. A Multi-Target Motor Imagery Training Using Bimodal EEG-fMRI Neurofeedback: A Pilot Study in Chronic Stroke Patients. Front Hum Neurosci 2020; 14:37. [PMID: 32132910 PMCID: PMC7040168 DOI: 10.3389/fnhum.2020.00037] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 01/27/2020] [Indexed: 01/08/2023] Open
Abstract
Traditional rehabilitation techniques present limitations and the majority of patients show poor 1-year post-stroke recovery. Thus, Neurofeedback (NF) or Brain-Computer-Interface applications for stroke rehabilitation purposes are gaining increased attention. Indeed, NF has the potential to enhance volitional control of targeted cortical areas and thus impact on motor function recovery. However, current implementations are limited by temporal, spatial or practical constraints of the specific imaging modality used. In this pilot work and for the first time in literature, we applied bimodal EEG-fMRI NF for upper limb stroke recovery on four stroke-patients with different stroke characteristics and motor impairment severity. We also propose a novel, multi-target training approach that guides the training towards the activation of the ipsilesional primary motor cortex. In addition to fMRI and EEG outcomes, we assess the integrity of the corticospinal tract (CST) with tractography. Preliminary results suggest the feasibility of our approach and show its potential to induce an augmented activation of ipsilesional motor areas, depending on the severity of the stroke deficit. Only the two patients with a preserved CST and subcortical lesions succeeded in upregulating the ipsilesional primary motor cortex and exhibited a functional improvement of upper limb motricity. These findings highlight the importance of taking into account the variability of the stroke patients' population and enabled to identify inclusion criteria for the design of future clinical studies.
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Affiliation(s)
- Giulia Lioi
- Univ Rennes, Inria, CNRS, Inserm, IRISA, Rennes, France
| | - Simon Butet
- Departement of Physical and Rehabilitation Medicine, Centre Hospitalier Universitaire (CHU) Rennes, Rennes, France
| | - Mathis Fleury
- Univ Rennes, Inria, CNRS, Inserm, IRISA, Rennes, France
| | - Elise Bannier
- Univ Rennes, Inria, CNRS, Inserm, IRISA, Rennes, France
- Departement of Radiology, CHU Rennes, Rennes, France
| | | | - Isabelle Bonan
- Univ Rennes, Inria, CNRS, Inserm, IRISA, Rennes, France
- Departement of Physical and Rehabilitation Medicine, Centre Hospitalier Universitaire (CHU) Rennes, Rennes, France
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17
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Brain activity during time to contact estimation: an EEG study. Cogn Neurodyn 2019; 14:155-168. [PMID: 32226559 DOI: 10.1007/s11571-019-09563-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Revised: 09/22/2019] [Accepted: 11/07/2019] [Indexed: 10/25/2022] Open
Abstract
Understanding the neural mechanisms associated with time to contact (TTC) estimation is an intriguing but challenging task. Despite the importance of TTC estimation in our everyday life, few studies have been conducted on it, and there are still a lot of unanswered questions and unknown aspects of this issue. In this study, we intended to address one of these unknown aspects. We used independent component analysis to systematically assess EEG substrates associated with TTC estimation using two experiments: (1) transversal motion experiment (when a moving object passes transversally in the frontoparallel plane from side to side in front of the observer), and (2) head-on motion experiment (when the observer is on the motion path of the moving object). We also studied the energy of all EEG sources in these two experiments. The results showed that brain regions involved in the transversal and head-on motion experiments were the same. However, the energy used by some brain regions in the head-on motion experiment, including some regions in left parietotemporal and left frontal lobes, was significantly higher than the energy used by those regions in the transversal motion experiment. These brain regions are dominantly associated with different kinds of visual attention, integration of visual information, and responding to visual motion.
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18
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Morioka S, Osumi M, Nishi Y, Ishigaki T, Ishibashi R, Sakauchi T, Takamura Y, Nobusako S. Motor-imagery ability and function of hemiplegic upper limb in stroke patients. Ann Clin Transl Neurol 2019; 6:596-604. [PMID: 30911582 PMCID: PMC6414480 DOI: 10.1002/acn3.739] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 12/24/2018] [Accepted: 01/31/2019] [Indexed: 01/26/2023] Open
Abstract
Objectives We quantitatively examined the motor‐imagery ability in stroke patients using a bimanual circle‐line coordination task (BCT) and clarified the relationship between motor‐imagery ability and motor function of hemiplegic upper limbs and the level of use of paralyzed limbs. Methods We enrolled 31 stroke patients. Tasks included unimanual‐line (U‐L)—drawing straight lines on the nonparalyzed side; bimanual circle‐line (B‐CL)—drawing straight lines with the nonparalyzed limb while drawing circles with the paralyzed limb; and imagery circle‐line (I‐CL)—drawing straight lines on the nonparalyzed side during imagery drawing on the paralyzed side, using a tablet personal computer. We calculated the ovalization index (OI) and motor‐imagery ability (image OI). We used the Fugl–Meyer motor assessment (FMA), amount of use (AOU), and quality of motion (QOM) of the motor activity log (MAL) as the three variables for cluster analysis and performed mediation analysis. Results Clusters 1 (FMA <26 points) and 2 (FMA ≥26 points) were formed. In cluster 2, we found significant associations between image OI and FMA, AOU, and QOM. When AOU and QOM were mediated between image OI and FMA, we observed no significant direct association between image OI and FMA, and a significant indirect effect of AOU and QOM. Interpretation In stroke patients with moderate‐to‐mild movement disorder, image OI directly affects AOU of hemiplegic upper limbs and their QOM in daily life and indirectly influences the motor functions via those parameters.
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Affiliation(s)
- Shu Morioka
- Neurorehabilitation Research Center Kio University 4-2-2 Umaminaka, Koryo, Kitakatsuragi-gun Nara 635-0832 Japan.,Department of Neurorehabilitation Graduate School of Health Sciences Kio University 4-2-2 Umaminaka, Koryo, Kitakatsuragi-gun Nara 635-0832 Japan
| | - Michihiro Osumi
- Neurorehabilitation Research Center Kio University 4-2-2 Umaminaka, Koryo, Kitakatsuragi-gun Nara 635-0832 Japan.,Department of Neurorehabilitation Graduate School of Health Sciences Kio University 4-2-2 Umaminaka, Koryo, Kitakatsuragi-gun Nara 635-0832 Japan
| | - Yuki Nishi
- Department of Neurorehabilitation Graduate School of Health Sciences Kio University 4-2-2 Umaminaka, Koryo, Kitakatsuragi-gun Nara 635-0832 Japan
| | - Tomoya Ishigaki
- Department of Neurorehabilitation Graduate School of Health Sciences Kio University 4-2-2 Umaminaka, Koryo, Kitakatsuragi-gun Nara 635-0832 Japan
| | - Rintaro Ishibashi
- Department of Rehabilitation Murata Hospital 4-2-1Tashima, Ikuno Osaka 544-0011 Japan
| | - Tsukasa Sakauchi
- Department of Physical Therapy Honjyo Orthopedic Surgery Clinic 5-5-15, Inadera Amagasaki Hyogo 661-0981 Japan
| | - Yusaku Takamura
- Department of Neurorehabilitation Graduate School of Health Sciences Kio University 4-2-2 Umaminaka, Koryo, Kitakatsuragi-gun Nara 635-0832 Japan
| | - Satoshi Nobusako
- Neurorehabilitation Research Center Kio University 4-2-2 Umaminaka, Koryo, Kitakatsuragi-gun Nara 635-0832 Japan.,Department of Neurorehabilitation Graduate School of Health Sciences Kio University 4-2-2 Umaminaka, Koryo, Kitakatsuragi-gun Nara 635-0832 Japan
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19
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Mehler DMA, Williams AN, Krause F, Lührs M, Wise RG, Turner DL, Linden DEJ, Whittaker JR. The BOLD response in primary motor cortex and supplementary motor area during kinesthetic motor imagery based graded fMRI neurofeedback. Neuroimage 2019; 184:36-44. [PMID: 30205210 PMCID: PMC6264383 DOI: 10.1016/j.neuroimage.2018.09.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 08/02/2018] [Accepted: 09/04/2018] [Indexed: 01/28/2023] Open
Abstract
There is increasing interest in exploring the use of functional MRI neurofeedback (fMRI-NF) as a therapeutic technique for a range of neurological conditions such as stroke and Parkinson's disease (PD). One main therapeutic potential of fMRI-NF is to enhance volitional control of damaged or dysfunctional neural nodes and networks via a closed-loop feedback model using mental imagery as the catalyst of self-regulation. The choice of target node/network and direction of regulation (increase or decrease activity) are central design considerations in fMRI-NF studies. Whilst it remains unclear whether the primary motor cortex (M1) can be activated during motor imagery, the supplementary motor area (SMA) has been robustly activated during motor imagery. Such differences in the regulation potential between primary and supplementary motor cortex are important because these areas can be differentially affected by a stroke or PD, and the choice of fMRI-NF target and grade of self-regulation of activity likely have substantial influence on the clinical effects and cost effectiveness of NF-based interventions. In this study we therefore investigated firstly whether healthy subjects would be able to achieve self-regulation of the hand-representation areas of M1 and the SMA using fMRI-NF training. There was a significant decrease in M1 neural activity during fMRI-NF, whereas SMA neural activity was increased, albeit not with the predicated graded effect. This study has important implications for fMRI-NF protocols that employ motor imagery to modulate activity in specific target regions of the brain and to determine how they may be tailored for neurorehabilitation.
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Affiliation(s)
- David M A Mehler
- MRC Centre for Neuropsychiatric Genetics and Genomics, Division of Psychological Medicine and Clinical Neurosciences, School of Medicine, Cardiff University, Cardiff, CF24 4HQ, United Kingdom; Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff, CF24 4HQ, United Kingdom
| | - Angharad N Williams
- Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff, CF24 4HQ, United Kingdom
| | - Florian Krause
- Donders Institute for Brain, Cognition and Behaviour Radboud University Medical Center, 6500 HB, Nijmegen, The Netherlands
| | - Michael Lührs
- Faculty of Psychology and Neuroscience, Maastricht University, Universiteitssingel 40, 6229 ER, Maastricht, The Netherlands; Brain Innovation B.V, Oxfordlaan 55, 6229 EV, Maastricht, The Netherlands
| | - Richard G Wise
- Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff, CF24 4HQ, United Kingdom
| | - Duncan L Turner
- Neurorehabilitation Unit, School of Health, Sport and Bioscience, University of East London, London, E15 4LZ, United Kingdom
| | - David E J Linden
- MRC Centre for Neuropsychiatric Genetics and Genomics, Division of Psychological Medicine and Clinical Neurosciences, School of Medicine, Cardiff University, Cardiff, CF24 4HQ, United Kingdom; Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff, CF24 4HQ, United Kingdom; School of Mental Health and Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, Universiteitssingel 40, 6229 ER, Maastricht, The Netherlands
| | - Joseph R Whittaker
- Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff, CF24 4HQ, United Kingdom; School of Physics and Astronomy, Cardiff University, Cardiff, CF24 3AA, United Kingdom.
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20
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Vargas-Irwin CE, Feldman JM, King B, Simeral JD, Sorice BL, Oakley EM, Cash SS, Eskandar EN, Friehs GM, Hochberg LR, Donoghue JP. Watch, Imagine, Attempt: Motor Cortex Single-Unit Activity Reveals Context-Dependent Movement Encoding in Humans With Tetraplegia. Front Hum Neurosci 2018; 12:450. [PMID: 30524258 PMCID: PMC6262367 DOI: 10.3389/fnhum.2018.00450] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 10/19/2018] [Indexed: 12/11/2022] Open
Abstract
Planning and performing volitional movement engages widespread networks in the human brain, with motor cortex considered critical to the performance of skilled limb actions. Motor cortex is also engaged when actions are observed or imagined, but the manner in which ensembles of neurons represent these volitional states (VoSs) is unknown. Here we provide direct demonstration that observing, imagining or attempting action activates shared neural ensembles in human motor cortex. Two individuals with tetraplegia (due to brainstem stroke or amyotrophic lateral sclerosis, ALS) were verbally instructed to watch, imagine, or attempt reaching actions displayed on a computer screen. Neural activity in the precentral gyrus incorporated information about both cognitive state and movement kinematics; the three conditions presented overlapping but unique, statistically distinct activity patterns. These findings demonstrate that individual neurons in human motor cortex reflect information related to sensory inputs and VoS in addition to movement features, and are a key part of a broader network linking perception and cognition to action.
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Affiliation(s)
- Carlos E Vargas-Irwin
- Department of Neuroscience, Brown University, Providence, RI, United States.,Robert J. and Nancy D. Carney Institute for Brain Science, Brown University, Providence, RI, United States
| | - Jessica M Feldman
- Department of Neuroscience, Brown University, Providence, RI, United States
| | - Brandon King
- Department of Neuroscience, Brown University, Providence, RI, United States
| | - John D Simeral
- Robert J. and Nancy D. Carney Institute for Brain Science, Brown University, Providence, RI, United States.,Center for Neurorestoration and Neurotechnology (CfNN), Rehabilitation R&D Service, Department of Veterans Affairs Medical Center, Providence, RI, United States.,School of Engineering, Brown University, Providence, RI, United States
| | - Brittany L Sorice
- Center for Neurotechnology and Neurorecovery (CNTR), Department of Neurology, Massachusetts General Hospital, Boston, MA, United States
| | - Erin M Oakley
- Center for Neurotechnology and Neurorecovery (CNTR), Department of Neurology, Massachusetts General Hospital, Boston, MA, United States
| | - Sydney S Cash
- Center for Neurotechnology and Neurorecovery (CNTR), Department of Neurology, Massachusetts General Hospital, Boston, MA, United States.,Department of Neurology, Harvard Medical School, Boston, MA, United States
| | - Emad N Eskandar
- Department of Neurosurgery, Harvard Medical School and Massachusetts General Hospital, Boston, MA, United States
| | - Gerhard M Friehs
- Department of Neurosurgery, Rhode Island Hospital, Providence, RI, United States
| | - Leigh R Hochberg
- Robert J. and Nancy D. Carney Institute for Brain Science, Brown University, Providence, RI, United States.,Center for Neurorestoration and Neurotechnology (CfNN), Rehabilitation R&D Service, Department of Veterans Affairs Medical Center, Providence, RI, United States.,School of Engineering, Brown University, Providence, RI, United States.,Center for Neurotechnology and Neurorecovery (CNTR), Department of Neurology, Massachusetts General Hospital, Boston, MA, United States.,Department of Neurology, Harvard Medical School, Boston, MA, United States
| | - John P Donoghue
- Department of Neuroscience, Brown University, Providence, RI, United States.,Robert J. and Nancy D. Carney Institute for Brain Science, Brown University, Providence, RI, United States.,Center for Neurorestoration and Neurotechnology (CfNN), Rehabilitation R&D Service, Department of Veterans Affairs Medical Center, Providence, RI, United States.,School of Engineering, Brown University, Providence, RI, United States
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21
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Effects of longer vs. shorter timed movement sequences on alpha motor inhibition when combining contractions and relaxations. Exp Brain Res 2018; 237:101-109. [PMID: 30341465 DOI: 10.1007/s00221-018-5401-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 10/10/2018] [Indexed: 10/28/2022]
Abstract
Alpha inhibitory processes reflect motor stimuli by either increasing or decreasing amplitude (i.e., power). However, the functional role and interplay of event-related alpha oscillations remains a regulatory domain that has not been sufficiently addressed, particularly with respect to different muscle activation types and durations in consecutive movement (i.e., motor) tasks. The aim of this study was to investigate alpha-band activity (7-13 Hz) in longer vs. shorter timed isometric muscle activations at distinct torques (20% and 40% of maximum voluntary contraction, MVC) when combined in one motor task sequence. In a randomized and controlled design, 18 healthy males volunteered to perform 40 longer (i.e., 6 s) and 40 shorter (i.e., 3 s) motor task sequences, each comprising isometric contractions (i.e., palmar flexion) from baseline to 20% and 40% MVC subsequent to relaxations from 40% and 20% MVC to baseline. Continuous, synchronized EEG, EMG and torque recordings served to determine alpha-band activity over task-relevant motor areas at distinct torques. Main findings revealed increases in alpha activity during subsequent progressive muscle relaxation (from 20% MVC in long and short: p < .001; from 40% MVC in short: p < .05), whereas modulations in relevant motor areas were not significant (p = .84). It may be suggested that an active task-relevant inhibitory process indicates motor task sequence-related relaxation mirrored by an increasing alpha activity.
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22
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de Borst AW, de Gelder B. fMRI-based Multivariate Pattern Analyses Reveal Imagery Modality and Imagery Content Specific Representations in Primary Somatosensory, Motor and Auditory Cortices. Cereb Cortex 2018; 27:3994-4009. [PMID: 27473324 DOI: 10.1093/cercor/bhw211] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 06/13/2016] [Indexed: 11/12/2022] Open
Abstract
Previous studies have shown that the early visual cortex contains content-specific representations of stimuli during visual imagery, and that these representational patterns of imagery content have a perceptual basis. To date, there is little evidence for the presence of a similar organization in the auditory and tactile domains. Using fMRI-based multivariate pattern analyses we showed that primary somatosensory, auditory, motor, and visual cortices are discriminative for imagery of touch versus sound. In the somatosensory, motor and visual cortices the imagery modality discriminative patterns were similar to perception modality discriminative patterns, suggesting that top-down modulations in these regions rely on similar neural representations as bottom-up perceptual processes. Moreover, we found evidence for content-specific representations of the stimuli during auditory imagery in the primary somatosensory and primary motor cortices. Both the imagined emotions and the imagined identities of the auditory stimuli could be successfully classified in these regions.
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Affiliation(s)
- Aline W de Borst
- Brain and Emotion Laboratory, Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, Limburg 6200 MD, the Netherlands
| | - Beatrice de Gelder
- Brain and Emotion Laboratory, Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, Limburg 6200 MD, the Netherlands.,Department of Psychiatry and Mental Health, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa
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23
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Kobelt M, Wirth B, Schuster-Amft C. Muscle Activation During Grasping With and Without Motor Imagery in Healthy Volunteers and Patients After Stroke or With Parkinson's Disease. Front Psychol 2018; 9:597. [PMID: 29740377 PMCID: PMC5928445 DOI: 10.3389/fpsyg.2018.00597] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 04/09/2018] [Indexed: 01/28/2023] Open
Abstract
Introduction: The present study assessed whether motor imagery (MI) produces electromyographic activation in specific muscles of the upper limb during a hand grasping and arm-lifting task in healthy volunteers, patients after stroke, or with Parkinson's disease. Electromyographic (EMG) activation was compared under three conditions: MI, physical execution (PE), and rest. The task is clinically relevant unilateral executed movement using open muscle chains. Methods: In a cross-sectional study EMG activation was measured in four muscles: M. deltoideus pars clavicularis, M. biceps brachii, M. extensor digitorum, M. flexor carpi radialis. MI ability was evaluated with mental rotation, mental chronometry and the Kinaesthetic and Visual Imagery Questionnaire. Cognitive performance was screened with the Mini-Mental State Examination. Results: Twenty-two participants (11 females, age 52.6 ±15.8, age range 21 to 72) were included: ten healthy volunteers, seven patients after stroke (time after stroke onset 16.3 ± 24.8 months), and five patients with Parkinson's disease (disease duration 60.4 ± 24.5 months). Overall Mini-Mental State Examination scores ranged between 27 and 30. An increased EMG activation during MI compared to rest condition was observed in M. deltoideus pars clavicularis and M. biceps brachii across all participants (p-value = 0.001, p = 0.007). Seven participants (two healthy volunteers, three patients after stroke and two patients with Parkinson's disease) showed a EMG activation during MI of the hand grasping and arm-lifting task in at least one of the target muscles. No correlation between EMG activation during MI and scores of three MI ability assessments were found. Conclusions: The findings suggest that MI can yield subliminal EMG activation. However, that might vary on individual basis. It remains unclear what parameters contribute to or inhibit an EMG activation during MI. Future investigations should determine factors that influence EMG activation, e.g. MI instructions, tasks to imagine, amount of MI training, and longitudinal changes after an MI training period.
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Affiliation(s)
- Manuela Kobelt
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland.,Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
| | - Brigitte Wirth
- Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland.,Interdisciplinary Spinal Research, Department of Chiropractic Medicine, Balgrist University Hospital, Zurich, Switzerland
| | - Corina Schuster-Amft
- Research Department, Reha Rheinfelden, Rheinfelden, Switzerland.,Institute of Rehabilitation and Performance Technology, Bern University of Applied Sciences, Burgdorf, Switzerland.,Division of Rehabilitative and Regenerative Medicine, Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
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24
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Tacchino A, Saiote C, Brichetto G, Bommarito G, Roccatagliata L, Cordano C, Battaglia MA, Mancardi GL, Inglese M. Motor Imagery as a Function of Disease Severity in Multiple Sclerosis: An fMRI Study. Front Hum Neurosci 2018; 11:628. [PMID: 29375340 PMCID: PMC5768615 DOI: 10.3389/fnhum.2017.00628] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 12/08/2017] [Indexed: 11/13/2022] Open
Abstract
Motor imagery (MI) is defined as mental execution without any actual movement. While healthy adults usually show temporal equivalence, i.e., isochrony, between the mental simulation of an action and its actual performance, neurological disorders are associated with anisochrony. Unlike in patients with stroke and Parkinson disease, only a few studies have investigated differences of MI ability in multiple sclerosis (MS). However, the relationship among disease severity, anisochrony and brain activation patterns during MI has not been investigated yet. Here, we propose to investigate MI in MS patients using fMRI during a behavioral task executed with dominant/non-dominant hand and to evaluate whether anisochrony is associated with disease severity. Thirty-seven right-handed MS patients, 17 with clinically isolated syndrome (CIS) suggestive of MS and 20 with relapsing-remitting MS (RR-MS) and 20 right-handed healthy controls (HC) underwent fMRI during a motor task consisting in the actual or imaged movement of squeezing a foam ball with the dominant and non-dominant hand. The same tasks were performed outside the MRI room to record the number of actual and imagined ball squeezes, and calculate an Index of performance (IP) based on the ratio between actual and imagined movements. IP showed that a progressive loss of ability in simulating actions (i.e., anisochrony) more pronounced for non-dominant hand, was found as function of the disease course. Moreover, anisochrony was associated with activation of occipito-parieto-frontal areas that were more extensive at the early stages of the disease, probably in order to counteract the changes due to MS. However, the neural engagement of compensatory brain areas becomes more difficult with more challenging tasks, i.e., dominant vs. non-dominant hand, with a consequent deficit in behavioral performance. These results show a strict association between MI performance and disease severity, suggesting that, at early stages of the disease, anisochrony in MI could be considered as surrogate behavioral marker of MS severity.
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Affiliation(s)
- Andrea Tacchino
- Scientific Research Area, Italian MS Foundation (FISM), Genoa, Italy
| | - Catarina Saiote
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, United States.,Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | | | - Giulia Bommarito
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy
| | - Luca Roccatagliata
- Department of Health Sciences (DISSAL), IRCCS San Martino University Hospital and IST, Genoa, Italy.,Neuroradiology Department, IRCCS San Martino University Hospital and IST, Genoa, Italy
| | - Christian Cordano
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy
| | | | - Gian L Mancardi
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy
| | - Matilde Inglese
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, United States.,Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy.,Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, United States.,Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY, United States
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25
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Lebon F, Horn U, Domin M, Lotze M. Motor imagery training: Kinesthetic imagery strategy and inferior parietal fMRI activation. Hum Brain Mapp 2018; 39:1805-1813. [PMID: 29322583 DOI: 10.1002/hbm.23956] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 12/19/2017] [Accepted: 01/02/2018] [Indexed: 11/11/2022] Open
Abstract
Motor imagery (MI) is the mental simulation of action frequently used by professionals in different fields. However, with respect to performance, well-controlled functional imaging studies on MI training are sparse. We investigated changes in fMRI representation going along with performance changes of a finger sequence (error and velocity) after MI training in 48 healthy young volunteers. Before training, we tested the vividness of kinesthetic and visual imagery. During tests, participants were instructed to move or to imagine moving the fingers of the right hand in a specific order. During MI training, participants repeatedly imagined the sequence for 15 min. Imaging analysis was performed using a full-factorial design to assess brain changes due to imagery training. We also used regression analyses to identify those who profited from training (performance outcome and gain) with initial imagery scores (vividness) and fMRI activation magnitude during MI at pre-test (MIpre ). After training, error rate decreased and velocity increased. We combined both parameters into a common performance index. FMRI activation in the left inferior parietal lobe (IPL) was associated with MI and increased over time. In addition, fMRI activation in the right IPL during MIpre was associated with high initial kinesthetic vividness. High kinesthetic imagery vividness predicted a high performance after training. In contrast, occipital activation, associated with visual imagery strategies, showed a negative predictive value for performance. Our data echo the importance of high kinesthetic vividness for MI training outcome and consider IPL as a key area during MI and through MI training.
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Affiliation(s)
- Florent Lebon
- CAPS, U1093 INSERM, Université de Bourgogne Franche-Comté, Faculté des Sciences du Sport, Dijon, F-21078, France
| | - Ulrike Horn
- Functional Imaging Unit, Department of Diagnostic Radiology and Neuroradiology, University Medicine, University of Greifswald, Greifswald, Germany
| | - Martin Domin
- Functional Imaging Unit, Department of Diagnostic Radiology and Neuroradiology, University Medicine, University of Greifswald, Greifswald, Germany
| | - Martin Lotze
- Functional Imaging Unit, Department of Diagnostic Radiology and Neuroradiology, University Medicine, University of Greifswald, Greifswald, Germany
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26
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Hoffmann-Hensel SM, Sijben R, Rodriguez-Raecke R, Freiherr J. Cognitive Load Alters Neuronal Processing of Food Odors. Chem Senses 2017; 42:723-736. [PMID: 28968851 DOI: 10.1093/chemse/bjx046] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Obesity is a major health concern in modern societies. Although decreased physical activity and enhanced intake of high-caloric foods are important risk factors for developing obesity, human behavior during eating also plays a role. Previous studies have shown that distraction while eating increases food intake and leads to impaired processing of food stimuli. As olfaction is the most important sense involved in flavor perception, we used functional magnetic resonance imaging techniques to investigate the influence of cognitive memory load on olfactory perception and processing. Low- and high-caloric food odors were presented in combination with either low or high cognitive loads utilizing a memory task. The efficacy of the memory task was verified by a decrease in participant recall accuracy and an increase in skin conductance response during high cognitive load. Our behavioral data reveal a diminished perceived intensity for low- but not high-caloric food odors during high cognitive load. For low-caloric food odors, bilateral orbitofrontal (OFC) and piriform cortices (pirC) showed significantly lower activity during high compared with low cognitive load. For high-caloric food odors, a similar effect was established in pirC, but not in OFC. Insula activity correlates with higher intensity ratings found during the low cognitive load condition. We conclude lower activity in pirC and OFC to be responsible for diminished intensity perception, comparable to results in olfactory impaired patients and elderly. Further studies should investigate the influence of olfactory/gustatory intensities on food choices under distraction with special regards to low-caloric food.
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Affiliation(s)
- Sonja Maria Hoffmann-Hensel
- Diagnostic and Interventional Neuroradiology, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Rik Sijben
- Diagnostic and Interventional Neuroradiology, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Rea Rodriguez-Raecke
- Diagnostic and Interventional Neuroradiology, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany.,Fraunhofer Institute for Process Engineering and Packaging IVV, Giggenhauser Str. 35, 85354 Freising, Germany
| | - Jessica Freiherr
- Diagnostic and Interventional Neuroradiology, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany.,Fraunhofer Institute for Process Engineering and Packaging IVV, Giggenhauser Str. 35, 85354 Freising, Germany
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27
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Functional topography of the primary motor cortex during motor execution and motor imagery as revealed by functional MRI. Neuroreport 2017; 28:731-738. [DOI: 10.1097/wnr.0000000000000825] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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28
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Comparison of Brain Activation during Motor Imagery and Motor Movement Using fNIRS. COMPUTATIONAL INTELLIGENCE AND NEUROSCIENCE 2017; 2017:5491296. [PMID: 28546809 PMCID: PMC5435907 DOI: 10.1155/2017/5491296] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 02/18/2017] [Accepted: 04/06/2017] [Indexed: 11/26/2022]
Abstract
Motor-activity-related mental tasks are widely adopted for brain-computer interfaces (BCIs) as they are a natural extension of movement intention, requiring no training to evoke brain activity. The ideal BCI aims to eliminate neuromuscular movement, making motor imagery tasks, or imagined actions with no muscle movement, good candidates. This study explores cortical activation differences between motor imagery and motor execution for both upper and lower limbs using functional near-infrared spectroscopy (fNIRS). Four simple finger- or toe-tapping tasks (left hand, right hand, left foot, and right foot) were performed with both motor imagery and motor execution and compared to resting state. Significant activation was found during all four motor imagery tasks, indicating that they can be detected via fNIRS. Motor execution produced higher activation levels, a faster response, and a different spatial distribution compared to motor imagery, which should be taken into account when designing an imagery-based BCI. When comparing left versus right, upper limb tasks are the most clearly distinguishable, particularly during motor execution. Left and right lower limb activation patterns were found to be highly similar during both imagery and execution, indicating that higher resolution imaging, advanced signal processing, or improved subject training may be required to reliably distinguish them.
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29
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Marchesotti S, Martuzzi R, Schurger A, Blefari ML, Del Millán JR, Bleuler H, Blanke O. Cortical and subcortical mechanisms of brain-machine interfaces. Hum Brain Mapp 2017; 38:2971-2989. [PMID: 28321973 DOI: 10.1002/hbm.23566] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 02/28/2017] [Accepted: 03/03/2017] [Indexed: 01/06/2023] Open
Abstract
Technical advances in the field of Brain-Machine Interfaces (BMIs) enable users to control a variety of external devices such as robotic arms, wheelchairs, virtual entities and communication systems through the decoding of brain signals in real time. Most BMI systems sample activity from restricted brain regions, typically the motor and premotor cortex, with limited spatial resolution. Despite the growing number of applications, the cortical and subcortical systems involved in BMI control are currently unknown at the whole-brain level. Here, we provide a comprehensive and detailed report of the areas active during on-line BMI control. We recorded functional magnetic resonance imaging (fMRI) data while participants controlled an EEG-based BMI inside the scanner. We identified the regions activated during BMI control and how they overlap with those involved in motor imagery (without any BMI control). In addition, we investigated which regions reflect the subjective sense of controlling a BMI, the sense of agency for BMI-actions. Our data revealed an extended cortical-subcortical network involved in operating a motor-imagery BMI. This includes not only sensorimotor regions but also the posterior parietal cortex, the insula and the lateral occipital cortex. Interestingly, the basal ganglia and the anterior cingulate cortex were involved in the subjective sense of controlling the BMI. These results inform basic neuroscience by showing that the mechanisms of BMI control extend beyond sensorimotor cortices. This knowledge may be useful for the development of BMIs that offer a more natural and embodied feeling of control for the user. Hum Brain Mapp 38:2971-2989, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Silvia Marchesotti
- Laboratory of Cognitive Neuroscience, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Geneva, Switzerland.,Center for Neuroprosthetics, Ecole Polytechnique Fédérale de Lausanne, Geneva, Switzerland.,Laboratory of Robotic Systems, School of Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Roberto Martuzzi
- Laboratory of Cognitive Neuroscience, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Geneva, Switzerland.,Center for Neuroprosthetics, Ecole Polytechnique Fédérale de Lausanne, Geneva, Switzerland.,Fondation Campus Biotech Geneva, Geneva, Switzerland
| | - Aaron Schurger
- Laboratory of Cognitive Neuroscience, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Geneva, Switzerland.,Center for Neuroprosthetics, Ecole Polytechnique Fédérale de Lausanne, Geneva, Switzerland.,Defitech Chair in Brain-Machine Interface, School of Engineering, Ecole Polytechnique Fédérale de Lausanne, Geneva, Switzerland.,Cognitive Neuroimaging Unit, NeuroSpin Research Center, INSERM, Gif-Sur-Yvette, France
| | - Maria Laura Blefari
- Laboratory of Cognitive Neuroscience, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Geneva, Switzerland.,Center for Neuroprosthetics, Ecole Polytechnique Fédérale de Lausanne, Geneva, Switzerland.,Defitech Chair in Brain-Machine Interface, School of Engineering, Ecole Polytechnique Fédérale de Lausanne, Geneva, Switzerland
| | - José R Del Millán
- Center for Neuroprosthetics, Ecole Polytechnique Fédérale de Lausanne, Geneva, Switzerland.,Defitech Chair in Brain-Machine Interface, School of Engineering, Ecole Polytechnique Fédérale de Lausanne, Geneva, Switzerland
| | - Hannes Bleuler
- Laboratory of Robotic Systems, School of Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Olaf Blanke
- Laboratory of Cognitive Neuroscience, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Geneva, Switzerland.,Center for Neuroprosthetics, Ecole Polytechnique Fédérale de Lausanne, Geneva, Switzerland.,Department of Neurology, University Hospital, Geneva, Switzerland
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30
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The effector independent nature of motor imagery: Evidence from rTMS induced inhibition to the primary motor cortices. Neuropsychologia 2017; 97:1-8. [DOI: 10.1016/j.neuropsychologia.2017.01.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 01/05/2017] [Accepted: 01/20/2017] [Indexed: 01/15/2023]
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31
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Kilintari M, Narayana S, Babajani-Feremi A, Rezaie R, Papanicolaou AC. Brain activation profiles during kinesthetic and visual imagery: An fMRI study. Brain Res 2016; 1646:249-261. [DOI: 10.1016/j.brainres.2016.06.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 05/09/2016] [Accepted: 06/07/2016] [Indexed: 01/25/2023]
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32
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Abstract
The primary motor cortex (M1) is traditionally implicated in voluntary movement control. In order to test the hypothesis that there is a functional topography of M1 activation in studies where it has been implicated in higher cognitive tasks we performed activation-likelihood-estimation (ALE) meta-analyses of functional neuroimaging experiments reporting M1 activation in relation to six cognitive functional categories for which there was a sufficient number of studies to include, namely motor imagery, working memory, mental rotation, social/emotion/empathy, language, and auditory processing. The six categories activated different sub-sectors of M1, either bilaterally or lateralized to one hemisphere. Notably, the activations found in the M1 of the left or right hemisphere detected in our study were unlikely due to button presses. In fact, all contrasts were selected in order to eliminate M1 activation due to activity related to the finger button press. In addition, we identified the M1 sub-region of Area 4a commonly activated by 4/6 categories, namely motor imagery and working memory, emotion/empathy, and language. Overall, our findings lend support to the idea that there is a functional topography of M1 activation in studies where it has been found activated in higher cognitive tasks and that the left Area 4a can be involved in a number of cognitive processes, likely as a product of implicit mental simulation processing.
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33
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Mizuguchi N, Nakata H, Kanosue K. Motor imagery beyond the motor repertoire: Activity in the primary visual cortex during kinesthetic motor imagery of difficult whole body movements. Neuroscience 2016; 315:104-13. [DOI: 10.1016/j.neuroscience.2015.12.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 12/06/2015] [Accepted: 12/08/2015] [Indexed: 10/22/2022]
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34
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Sharma N, Baron JC. Motor Recovery After Subcortical Stroke Depends on Modulation of Extant Motor Networks. Front Neurol 2015; 6:230. [PMID: 26635715 PMCID: PMC4644932 DOI: 10.3389/fneur.2015.00230] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 10/19/2015] [Indexed: 01/12/2023] Open
Abstract
Introduction Stroke is the leading cause of long-term disability. Functional imaging studies report widespread changes in movement-related cortical networks after stroke. Whether these are a result of stroke-specific cognitive processes or reflect modulation of existing movement-related networks is unknown. Understanding this distinction is critical in establishing more effective restorative therapies after stroke. Using multivariate analysis (tensor-independent component analysis – TICA), we map the neural networks involved during motor imagery (MI) and executed movement (EM) in subcortical stroke patients and age-matched controls. Methods Twenty subcortical stroke patients and 17 age-matched controls were recruited. They were screened for their ability to carry out MI (Chaotic MI Assessment). The fMRI task was a right-hand finger-thumb opposition sequence (auditory-paced 1 Hz; 2, 3, 4, 5, 2…). Two separate runs were acquired (MI and rest and EM and rest; block design). There was no distinction between groups or tasks until the last stage of analysis, which allowed TICA to identify independent components (ICs) that were common or distinct to each group or task with no prior assumptions. Results TICA defined 28 ICs. ICs representing artifacts were excluded. ICs were only included if the subject scores were significant (for either EM or MI). Seven ICs remained that involved the primary and secondary motor networks. All ICs were shared between the stroke and age-matched controls. Five ICs were common to both tasks and three were exclusive to EM. Two ICs were related to motor recovery and one with time since stroke onset, but all were shared with age-matched controls. No IC was exclusive to stroke patients. Conclusion We report that the cortical networks in stroke patients that relate to recovery of motor function represent modulation of existing cortical networks present in age-matched controls. The absence of cortical networks specific to stroke patients suggests that motor adaptation and other potential confounders (e.g., effort and additional muscle use) are not responsible for the changes in the cortical networks reported after stroke. This highlights that recovery of motor function after subcortical stroke involves preexisting cortical networks that could help identify more effective restorative therapies.
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Affiliation(s)
- Nikhil Sharma
- Stroke Research Group, Department of Clinical Neurosciences, University of Cambridge , Cambridge , UK ; MRC Unit for Lifelong Health and Ageing, University College London , London , UK ; The National Hospital for Neurology and Neurosurgery , London , UK
| | - Jean-Claude Baron
- Stroke Research Group, Department of Clinical Neurosciences, University of Cambridge , Cambridge , UK ; INSERM U894, Centre Hospitalier Sainte-Anne, Sorbonne Paris Cite , Paris , France
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35
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Task-dependent changes of corticospinal excitability during observation and motor imagery of balance tasks. Neuroscience 2015; 303:535-43. [DOI: 10.1016/j.neuroscience.2015.07.031] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 07/08/2015] [Accepted: 07/10/2015] [Indexed: 11/16/2022]
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36
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Philip BA, Buckon C, Sienko S, Aiona M, Ross S, Frey SH. Maturation and experience in action representation: Bilateral deficits in unilateral congenital amelia. Neuropsychologia 2015; 75:420-30. [PMID: 26092768 DOI: 10.1016/j.neuropsychologia.2015.05.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 04/17/2015] [Accepted: 05/20/2015] [Indexed: 01/12/2023]
Abstract
Congenital unilateral absence of the hand (amelia) completely deprives individuals of sensorimotor experiences with their absent effector. The consequences of such deprivation on motor planning abilities are poorly understood. Fourteen patients and matched controls performed two grip selection tasks: 1) overt grip selection (OGS), in which they used their intact hand to grasp a three-dimensional object that appeared in different orientations using the most natural (under-or over-hand) precision grip, and 2) prospective grip selection (PGS), in which they selected the most natural grip for either the intact or absent hand without moving. For the intact hand, we evaluated planning accuracy by comparing concordance between grip preferences expressed in PGS vs. OGS. For the absent hand, we compared PGS responses with OGS responses for the intact hand that had been phase shifted by 180°, thereby accounting for mirror symmetrical biomechanical constraints of the two limbs. Like controls, amelic individuals displayed a consistent preference for less awkward grips in both OGS and PGS. Unexpectedly, however, they were slower and less accurate for PGS based on either the intact or the absent hand. We conclude that direct sensorimotor experience with both hands may be important for the typical development or refinement of effector-specific internal representations of either limb.
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Affiliation(s)
- B A Philip
- Psychological Sciences, University of Missouri, Columbia, MO, United States
| | - C Buckon
- Shriners Hospital for Children Portland, Portland, OR, United States
| | - S Sienko
- Shriners Hospital for Children Portland, Portland, OR, United States
| | - M Aiona
- Shriners Hospital for Children Portland, Portland, OR, United States
| | - S Ross
- Exercise and Sport Science, Oregon State University, Corvallis, OR, United States
| | - S H Frey
- Psychological Sciences, University of Missouri, Columbia, MO, United States.
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37
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Alahmadi AAS, Samson RS, Gasston D, Pardini M, Friston KJ, D'Angelo E, Toosy AT, Wheeler-Kingshott CAM. Complex motor task associated with non-linear BOLD responses in cerebro-cortical areas and cerebellum. Brain Struct Funct 2015; 221:2443-58. [PMID: 25921976 PMCID: PMC4884204 DOI: 10.1007/s00429-015-1048-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 04/18/2015] [Indexed: 01/13/2023]
Abstract
Previous studies have used fMRI to address the relationship between grip force (GF) applied to an object and BOLD response. However, whilst the majority of these studies showed a linear relationship between GF and neural activity in the contralateral M1 and ipsilateral cerebellum, animal studies have suggested the presence of non-linear components in the GF–neural activity relationship. Here, we present a methodology for assessing non-linearities in the BOLD response to different GF levels, within primary motor as well as sensory and cognitive areas and the cerebellum. To be sensitive to complex forms, we designed a feasible grip task with five GF targets using an event-related visually guided paradigm and studied a cohort of 13 healthy volunteers. Polynomial functions of increasing order were fitted to the data. Major findings: (1) activated motor areas irrespective of GF; (2) positive higher-order responses in and outside M1, involving premotor, sensory and visual areas and cerebellum; (3) negative correlations with GF, predominantly involving the visual domain. Overall, our results suggest that there are physiologically consistent behaviour patterns in cerebral and cerebellar cortices; for example, we observed the presence of a second-order effect in sensorimotor areas, consistent with an optimum metabolic response at intermediate GF levels, while higher-order behaviour was found in associative and cognitive areas. At higher GF levels, sensory-related cortical areas showed reduced activation, interpretable as a redistribution of the neural activity for more demanding tasks. These results have the potential of opening new avenues for investigating pathological mechanisms of neurological diseases.
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Affiliation(s)
- Adnan A S Alahmadi
- NMR Research Unit, Department of Neuroinflammation, Queen Square MS Centre, UCL Institute of Neurology, University College London, London, WC1N 3BG, UK. .,Department of Diagnostic Radiology, Faculty of Applied Medical Science, King Abdulaziz University (KAU), Jeddah, Saudi Arabia.
| | - Rebecca S Samson
- NMR Research Unit, Department of Neuroinflammation, Queen Square MS Centre, UCL Institute of Neurology, University College London, London, WC1N 3BG, UK
| | - David Gasston
- Department of Neuroimaging, Institute of Psychiatry, King's College London, London, UK
| | - Matteo Pardini
- NMR Research Unit, Department of Neuroinflammation, Queen Square MS Centre, UCL Institute of Neurology, University College London, London, WC1N 3BG, UK.,Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, Genoa, Italy
| | - Karl J Friston
- Wellcome Centre for Imaging Neuroscience, UCL Institute of Neurology, University College London, London, UK
| | - Egidio D'Angelo
- Brain Connectivity Center, C. Mondino National Neurological Institute, Pavia, Italy.,Department of Brain and Behavioural Sciences, University of Pavia, Pavia, Italy
| | - Ahmed T Toosy
- NMR Research Unit, Department of Neuroinflammation, Queen Square MS Centre, UCL Institute of Neurology, University College London, London, WC1N 3BG, UK.,Department of Brain Repair and Rehabilitation, UCL Institute of Neurology, University College London, London, UK
| | - Claudia A M Wheeler-Kingshott
- NMR Research Unit, Department of Neuroinflammation, Queen Square MS Centre, UCL Institute of Neurology, University College London, London, WC1N 3BG, UK.,Brain Connectivity Center, C. Mondino National Neurological Institute, Pavia, Italy
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38
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Blefari ML, Sulzer J, Hepp-Reymond MC, Kollias S, Gassert R. Improvement in precision grip force control with self-modulation of primary motor cortex during motor imagery. Front Behav Neurosci 2015; 9:18. [PMID: 25762907 PMCID: PMC4327737 DOI: 10.3389/fnbeh.2015.00018] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 01/20/2015] [Indexed: 11/13/2022] Open
Abstract
Motor imagery (MI) has shown effectiveness in enhancing motor performance. This may be due to the common neural mechanisms underlying MI and motor execution (ME). The main region of the ME network, the primary motor cortex (M1), has been consistently linked to motor performance. However, the activation of M1 during motor imagery is controversial, which may account for inconsistent rehabilitation therapy outcomes using MI. Here, we examined the relationship between contralateral M1 (cM1) activation during MI and changes in sensorimotor performance. To aid cM1 activity modulation during MI, we used real-time fMRI neurofeedback-guided MI based on cM1 hand area blood oxygen level dependent (BOLD) signal in healthy subjects, performing kinesthetic MI of pinching. We used multiple regression analysis to examine the correlation between cM1 BOLD signal and changes in motor performance during an isometric pinching task of those subjects who were able to activate cM1 during motor imagery. Activities in premotor and parietal regions were used as covariates. We found that cM1 activity was positively correlated to improvements in accuracy as well as overall performance improvements, whereas other regions in the sensorimotor network were not. The association between cM1 activation during MI with performance changes indicates that subjects with stronger cM1 activation during MI may benefit more from MI training, with implications toward targeted neurotherapy.
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Affiliation(s)
- Maria L Blefari
- Rehabilitation Engineering Laboratory, Eidgenössische Technische Hochschule Zürich Zurich, Switzerland ; Chair in Non-Invasive Brain-Machine Interface, Center for Neuroprosthetics, École polytechnique fédérale de Lausanne Lausanne, Switzerland
| | - James Sulzer
- Rehabilitation Engineering Laboratory, Eidgenössische Technische Hochschule Zürich Zurich, Switzerland ; Department of Mechanical Engineering, University of Texas at Austin Austin, TX, USA
| | - Marie-Claude Hepp-Reymond
- Institute of Neuroinformatics, University of Zurich and Eidgenössische Technische Hochschule Zürich Zurich, Switzerland
| | - Spyros Kollias
- Neuroradiology Clinic, University Hospital Zurich Zurich, Switzerland
| | - Roger Gassert
- Rehabilitation Engineering Laboratory, Eidgenössische Technische Hochschule Zürich Zurich, Switzerland
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Assessing motor imagery ability in younger and older adults by combining measures of vividness, controllability and timing of motor imagery. Brain Res 2014; 1597:196-209. [PMID: 25481412 DOI: 10.1016/j.brainres.2014.11.050] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 11/18/2014] [Accepted: 11/24/2014] [Indexed: 11/24/2022]
Abstract
With the population aging, a large number of patients undergoing rehabilitation are older than 60 years. Also, since the use of motor imagery (MI) training in rehabilitation is becoming more popular, it is important to gain a better knowledge about the age-related changes in MI ability. The main goal of this study was to compare MI ability in younger and older adults as well as to propose a new procedure for testing this ability. Thirty healthy young subjects (mean age: 22.9±2.7 years) and 28 healthy elderly subjects (mean age: 72.4±5.5 years) participated in the experiment. They were administered three tests aimed at assessing three dimensions of MI: (1) the kinesthetic and visual imagery questionnaire (KVIQ) to assess MI vividness; (2) a finger-thumb opposition task to assess MI controllability; and (3) a chronometric task to assess the timing of MI. On average, the younger and older groups showed similar results on the KVIQ and the chronometric task, but the younger group was more accurate at the finger-thumb opposition task. Interestingly, there was a large variability in the performance within both groups, emphasizing the importance of considering each person individually regarding MI ability, whatever his age. Finally, we propose two indexes of MI ability to identify the potential of persons to engage in MI training programs. Future studies are needed to confirm the predictive value of these MI indexes and define inclusion/exclusion thresholds for their use as a screening tool in both younger and older adults.
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Battaglia C, D'Artibale E, Fiorilli G, Piazza M, Tsopani D, Giombini A, Calcagno G, di Cagno A. Use of video observation and motor imagery on jumping performance in national rhythmic gymnastics athletes. Hum Mov Sci 2014; 38:225-34. [PMID: 25457420 DOI: 10.1016/j.humov.2014.10.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 10/04/2014] [Accepted: 10/05/2014] [Indexed: 11/25/2022]
Abstract
The aim of this study was to evaluate whether a mental training protocol could improve gymnastic jumping performance. Seventy-two rhythmic gymnasts were randomly divided into an experimental and control group. At baseline, experimental group completed the Movement Imagery Questionnaire Revised (MIQ-R) to assess the gymnast ability to generate movement imagery. A repeated measures design was used to compare two different types of training aimed at improving jumping performance: (a) video observation and PETTLEP mental training associated with physical practice, for the experimental group, and (b) physical practice alone for the control group. Before and after six weeks of training, their jumping performance was measured using the Hopping Test (HT), Drop Jump (DJ), and Counter Movement Jump (CMJ). Results revealed differences between jumping parameters F(1,71)=11.957; p<.01, and between groups F(1,71)=10.620; p<.01. In the experimental group there were significant correlations between imagery ability and the post-training Flight Time of the HT, r(34)=-.295, p<.05 and the DJ, r(34)=-.297, p<.05. The application of the protocol described herein was shown to improve jumping performance, thereby preserving the elite athlete's energy for other tasks.
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Affiliation(s)
- Claudia Battaglia
- University of Rome "Foro Italico", Italy; University of Hawaii, United States; University of Molise, Italy; University of Florence, Italy
| | - Emanuele D'Artibale
- University of Rome "Foro Italico", Italy; University of Hawaii, United States; University of Molise, Italy; University of Florence, Italy
| | - Giovanni Fiorilli
- University of Rome "Foro Italico", Italy; University of Hawaii, United States; University of Molise, Italy; University of Florence, Italy
| | - Marina Piazza
- University of Rome "Foro Italico", Italy; University of Hawaii, United States; University of Molise, Italy; University of Florence, Italy
| | - Despina Tsopani
- University of Rome "Foro Italico", Italy; University of Hawaii, United States; University of Molise, Italy; University of Florence, Italy
| | - Arrigo Giombini
- University of Rome "Foro Italico", Italy; University of Hawaii, United States; University of Molise, Italy; University of Florence, Italy
| | - Giuseppe Calcagno
- University of Rome "Foro Italico", Italy; University of Hawaii, United States; University of Molise, Italy; University of Florence, Italy
| | - Alessandra di Cagno
- University of Rome "Foro Italico", Italy; University of Hawaii, United States; University of Molise, Italy; University of Florence, Italy.
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Abnormalities of motor imagery and relationship with depressive symptoms in mildly disabling relapsing-remitting multiple sclerosis. J Neurol Phys Ther 2014; 38:111-8. [PMID: 24531344 DOI: 10.1097/npt.0000000000000033] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND AND PURPOSE The effectiveness of motor imagery (MI) as an adjunct to physical rehabilitation has previously been shown. Motor imagery ability can be affected by neurologic disorders that affect motor and cognitive function. This study was designed to assess MI ability in persons with mildly disabling relapsing-remitting multiple sclerosis (RRMS) based on the functional and cognitive dysfunctions. METHODS Twenty-two participants with RRMS and 23 age-, gender-, and education-matched comparison subjects were evaluated by a battery of MI tasks, including a kinesthetic and visual imagery questionnaire, a mental hand rotation task, and a visual guided pointing task. RESULTS There was no significant difference in MI vividness between the participants with MS and the comparison group, but the accuracy and temporal correspondence of MI in the participants with MS differed significantly from those in the comparison group. Depression scores were significantly higher in participants with MS (P < 0.001), and depression was significantly correlated with disability (r = 0.4; P < 0.05). The correlation between accuracy of MI in the participants with MS and their cognitive ability was significant (r = 0.57; P < 0.05). The MI duration of participants with MS was significantly correlated with their disability (r = 0.59; P < 0.05) and their cognitive ability (r = -0.38; P = 0.009). DISCUSSION The preservation of MI ability was observed in participants with RRMS; however, abnormalities in accuracy and temporal aspects of MI were observed even in the participants with mild disease. Abnormalities in temporal aspects and accuracy of MI were related to disability and cognitive ability, respectively. In participants with MS, depression should be considered as a confounding factor for the MI task results. CONCLUSIONS Our finding could be considered in the application of MI during the rehabilitation of persons with MS.
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Painold A, Faber PL, Milz P, Reininghaus EZ, Holl AK, Letmaier M, Pascual-Marqui RD, Reininghaus B, Kapfhammer HP, Lehmann D. Brain electrical source imaging in manic and depressive episodes of bipolar disorder. Bipolar Disord 2014; 16:690-702. [PMID: 24636537 DOI: 10.1111/bdi.12198] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Accepted: 11/12/2013] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Bipolar disorder (BD) electroencephalographic (EEG) studies have reported varying results. The present study compared EEG in BD during manic and depressive episodes, using brain electrical source imaging [standardized low-resolution electromagnetic tomography (sLORETA)] to assess the cortical spatial distribution of the sources of EEG oscillation frequencies. METHODS Two independent datasets (a total of 95 patients with bipolar I disorder, of whom 59 were female) were analyzed. Dataset #1 comprised 14 patients in a manic as well as a depressive episode. Dataset #2 comprised 26 patients in a manic episode and 55 patients in a depressive episode. From the head surface-recorded EEG, sLORETA cortical activity was computed in eight EEG frequency bands, and compared between mood states in both datasets. The results from the two datasets were combined using conjunction analysis. RESULTS Conjunction analysis yielded significant differences between mood states: In manic compared to depressive states, patients had lesser theta frequency band activity (right-hemispheric lateral lower prefrontal and anterior temporal, mainly Brodmann areas 13, 38, and 47), and greater beta-2 and beta-3 frequency band activity (extended bilateral prefrontal-to-parietal, mainly Brodmann area 6, and the cingulate). CONCLUSIONS The spatial organization of the brain's electrical oscillations differed in patients with BD between manic and depressive mood states. The brain areas implementing the main functions that show opposing abnormalities during manic and depressive episodes were affected by unduly increased or decreased activity (beta or theta). The discussion considers that facilitating (beta) or inhibiting (theta) electrical activity can in either case result in behavioral facilitation or inhibition, depending on the function of the brain area.
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Grafton ST, Viswanathan S. Rethinking the role of motor simulation in perceptual decisions. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 826:69-90. [PMID: 25330886 DOI: 10.1007/978-1-4939-1338-1_6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Affiliation(s)
- Scott T Grafton
- Department of Psychological Brain Sciences, University of California, 93106-9660, Santa Barbara, CA, USA,
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Liu H, Song L, Zhang T. Changes in brain activation in stroke patients after mental practice and physical exercise: a functional MRI study. Neural Regen Res 2014; 9:1474-84. [PMID: 25317160 PMCID: PMC4192950 DOI: 10.4103/1673-5374.139465] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/23/2014] [Indexed: 01/13/2023] Open
Abstract
Mental practice is a new rehabilitation method that refers to the mental rehearsal of motor imagery content with the goal of improving motor performance. However, the relationship between activated regions and motor recovery after mental practice training is not well understood. In this study, 15 patients who suffered a first-ever subcortical stroke with neurological deficits affecting the right hand, but no significant cognitive impairment were recruited. 10 patients underwent mental practice combined with physical practice training, and 5 patients only underwent physical practice training. We observed brain activation regions after 4 weeks of training, and explored the correlation of activation changes with functional recovery of the affected hands. The results showed that, after 4 weeks of mental practice combined with physical training, the Fugl-Meyer assessment score for the affected right hand was significantly increased than that after 4 weeks of practice training alone. Functional MRI showed enhanced activation in the left primary somatosensory cortex, attenuated activation intensity in the right primary motor cortex, and enhanced right cerebellar activation observed during the motor imagery task using the affected right hand after mental practice training. The changes in brain cortical activity were related to functional recovery of the hand. Experimental findings indicate that cortical and cerebellar functional reorganization following mental practice contributed to the improvement of hand function.
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Affiliation(s)
- Hua Liu
- Capital Medical University School of Rehabilitation Medicine, China Rehabilitation Research Center, Beijing 100068, China
| | - Luping Song
- Capital Medical University School of Rehabilitation Medicine, China Rehabilitation Research Center, Beijing 100068, China
| | - Tong Zhang
- Capital Medical University School of Rehabilitation Medicine, China Rehabilitation Research Center, Beijing 100068, China
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Mizuguchi N, Nakata H, Kanosue K. Activity of right premotor-parietal regions dependent upon imagined force level: an fMRI study. Front Hum Neurosci 2014; 8:810. [PMID: 25339893 PMCID: PMC4189331 DOI: 10.3389/fnhum.2014.00810] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 09/23/2014] [Indexed: 11/21/2022] Open
Abstract
In this study, we utilized functional magnetic resonance imaging (fMRI) to measure blood oxygenation level-dependent (BOLD) signals. This allowed us to evaluate the relationship between brain activity and imagined force level. Subjects performed motor imagery of repetitive right hand grasping with three different levels of contractile force; 10%, 30%, and 60% of their maximum voluntary contraction (MVC). We observed a common activation among each condition in the following brain regions; the dorsolateral prefrontal cortex (DLPFC), ventrolateral prefrontal cortex (VLPFC), supplementary motor area (SMA), premotor area (PM), insula, and inferior parietal lobule (IPL). In addition, the BOLD signal changes were significantly larger at 60% MVC than at 10% MVC in the right PM, the right IPL, and the primary somatosensory cortex (SI). These findings indicate that during motor imagery right fronto-parietal activity increases as the imagined contractile force level is intensified. The present finding that the right brain activity during motor imagery is clearly altered depending on the imagined force level suggests that it may be possible to decode intended force level during the motor imagery of patients or healthy subjects.
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Affiliation(s)
- Nobuaki Mizuguchi
- Faculty of Sport Sciences, Waseda University Tokorozawa, Saitama, Japan
| | - Hiroki Nakata
- Faculty of Sport Sciences, Waseda University Tokorozawa, Saitama, Japan
| | - Kazuyuki Kanosue
- Faculty of Sport Sciences, Waseda University Tokorozawa, Saitama, Japan
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Wymbs NF, Grafton ST. The Human Motor System Supports Sequence-Specific Representations over Multiple Training-Dependent Timescales. Cereb Cortex 2014; 25:4213-25. [PMID: 24969473 DOI: 10.1093/cercor/bhu144] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Motor sequence learning is associated with increasing and decreasing motor system activity. Here, we ask whether sequence-specific activity is contingent upon the time interval and absolute amount of training over which the skill is acquired. We hypothesize that within each motor region, the strength of any sequence representation is a non-linear function that can be characterized by 3 timescales. We had subjects train for 6 weeks and measured brain activity with functional magnetic resonance imaging. We used repetition suppression (RS) to isolate sequence-specific representations while controlling for effects related to kinematics and general task familiarity. Following a baseline training session, primary and secondary motor regions demonstrated rapidly increasing RS. With continued training, there was evidence for skill-specific efficiency, characterized by a dramatic decrease in motor system RS. In contrast, after performance had reached a plateau, further training led to a pattern of slowly increasing RS in the contralateral sensorimotor cortex, supplementary motor area, ventral premotor cortex, and anterior cerebellum consistent with skill-specific specialization. Importantly, many motor areas show changes involving more than 1 of these 3 timescales, underscoring the capacity of the motor system to flexibly represent a sequence based on the amount of prior experience.
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Affiliation(s)
- Nicholas F Wymbs
- Department of Physical Medicine and Rehabilitation, Johns Hopkins Medical Institution, Baltimore, MD, USA
| | - Scott T Grafton
- Department of Psychological and Brain Sciences, University of California at Santa Barbara (UCSB), Santa Barbara, CA 93106-9660, USA
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Sharma N, Baron JC. Effects of healthy ageing on activation pattern within the primary motor cortex during movement and motor imagery: an fMRI study. PLoS One 2014; 9:e88443. [PMID: 24887402 PMCID: PMC4041563 DOI: 10.1371/journal.pone.0088443] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Accepted: 01/13/2014] [Indexed: 01/25/2023] Open
Abstract
The increase in older adults over the coming decades will be accompanied by a greater burden of chronic neurological diseases affecting the motor system. The motor system adapts to maintain motor performance with the primary motor cortex (BA4) emerging as a pivotal node within this neuroplastic process. Studies of ageing often consider BA4 a homogenous area but cytoarchitectonic studies have revealed two subdivisions, an anterior (BA4a) and posterior subdivision (BA4p). Here we focus upon the effects of ageing on the involvement of BA4a and BA4p during movement and motor imagery (MI). Thirty-one right-handed healthy volunteers were recruited and screened for their ability to perform imagery (5 subjects excluded). The sample was split into an older group (n = 13, mean age 56.4 SD 9.4) and a younger group (n = 13, mean age 27.4 SD 5.3). We used an fMRI block-design (auditory-paced [1 Hz] right hand finger-thumb opposition sequence [2,3,4,5, 2...]) with MI & rest and actual movement & rest. We explored the distribution-based clustering and weighted laterality index within BA4a and BA4p. The involvement of BA4p during MI (measured with distribution-based clustering) was significantly greater in the older group (p<0.05) than in the younger group. Hemispheric balance of BA4p decreased with age during MI (Spearman rho -0.371; p<0.05), whereas that of BA4a decreased with age during actual movement (Spearman rho = -0.458 p<0.01). Irrespective of age, we found BA4 is involved during motor imagery, strengthening the rationale for its potential use in older subjects. These findings suggest that the functions of the subdivisions of BA4 are differentially affected by ageing and have implications regarding how ageing affects the cognitive processes underlying motor functions.
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Affiliation(s)
- Nikhil Sharma
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom
- * E-mail:
| | - Jean-Claude Baron
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom
- Institut national de la santé et de la recherche médicale (INSERM), Centre de Psychiatrie et Neurosciences, Hopital Sainte-Anne, Université, Paris, France
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Mokienko OA, Chernikova LA, Frolov AA, Bobrov PD. Motor Imagery and Its Practical Application. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/s11055-014-9937-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Di Rienzo F, Collet C, Hoyek N, Guillot A. Impact of Neurologic Deficits on Motor Imagery: A Systematic Review of Clinical Evaluations. Neuropsychol Rev 2014; 24:116-47. [DOI: 10.1007/s11065-014-9257-6] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 03/02/2014] [Indexed: 12/16/2022]
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Ikeda S, Shibata T, Nakano N, Okada R, Tsuyuguchi N, Ikeda K, Kato A. Neural decoding of single vowels during covert articulation using electrocorticography. Front Hum Neurosci 2014; 8:125. [PMID: 24639642 PMCID: PMC3945950 DOI: 10.3389/fnhum.2014.00125] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Accepted: 02/19/2014] [Indexed: 11/13/2022] Open
Abstract
The human brain has important abilities for manipulating phonemes, the basic building blocks of speech; these abilities represent phonological processing. Previous studies have shown change in the activation levels of broad cortical areas such as the premotor cortex, the inferior frontal gyrus, and the superior temporal gyrus during phonological processing. However, whether these areas actually convey signals to representations related to individual phonemes remains unclear. This study focused on single vowels and investigated cortical areas important for representing single vowels using electrocorticography (ECoG) during covert articulation. To identify such cortical areas, we used a neural decoding approach in which machine learning models identify vowels. A decoding model was trained on the ECoG signals from individual electrodes placed on the subjects' cortices. We then statistically evaluated whether each decoding model showed accurate identification of vowels, and we found cortical areas such as the premotor cortex and the superior temporal gyrus. These cortical areas were consistent with previous findings. On the other hand, no electrodes over Broca's area showed significant decoding accuracies. This was inconsistent with findings from a previous study showing that vowels within the phonemic sequence of words can be decoded using ECoG signals from Broca's area. Our results therefore suggest that Broca's area is involved in the processing of vowels within phonemic sequences, but not in the processing of single vowels.
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Affiliation(s)
- Shigeyuki Ikeda
- Graduate School of Information Science, Nara Institute of Science and Technology Ikoma, Japan
| | - Tomohiro Shibata
- Graduate School of Information Science, Nara Institute of Science and Technology Ikoma, Japan ; Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology Kitakyushu, Japan
| | - Naoki Nakano
- Department of Neurosurgery, Kinki University Faculty of Medicine Sayama, Japan
| | - Rieko Okada
- Department of Neurosurgery, Kinki University Faculty of Medicine Sayama, Japan
| | - Naohiro Tsuyuguchi
- Department of Neurosurgery, Graduate School of Medicine, Osaka City University Osaka, Japan
| | - Kazushi Ikeda
- Graduate School of Information Science, Nara Institute of Science and Technology Ikoma, Japan
| | - Amami Kato
- Department of Neurosurgery, Kinki University Faculty of Medicine Sayama, Japan ; Core Research for Evolutionary Science and Technology, Japan Science and Technology Agency Kawaguchi, Japan
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