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Ogahara K, Nakashima A, Suzuki T, Sugawara K, Yoshida N, Hatta A, Moriuchi T, Higashi T. Comparing movement-related cortical potential between real and simulated movement tasks from an ecological validity perspective. Front Hum Neurosci 2024; 17:1313835. [PMID: 38298203 PMCID: PMC10828031 DOI: 10.3389/fnhum.2023.1313835] [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: 10/10/2023] [Accepted: 12/26/2023] [Indexed: 02/02/2024] Open
Abstract
Introduction Concerns regarding the ecological validity of movement-related cortical potential (MRCP) experimental tasks that are related to motor learning have recently been growing. Therefore, we compared MRCP during real movement task (RMT) and simulated movement task (SMT) from an ecological validity perspective. Methods The participants performed both RMT and SMT, and MRCP were measured using electroencephalogram (EEG). EEG was based on the 10-20 method, with electrodes placed in the motor cortex (C3 and C4) and supplementary motor cortex (FCz [between Fz and Cz] and Cz) areas. This experiment examined the MRCP using Bereitschaftspotential (BP) and negative slope (NS') onset times, and BP, NS', and motor potential (MP) amplitudes during the task. Results The results revealed that the SMT exhibited later BP and NS' onset times and smaller BP, NS', and MP amplitudes than the RMT. Furthermore, in RMT, the onset time of MRCP was delayed, and the amplitude of MRCP was smaller in the second half of the 200 times task than in the first half, whereas in SMT, there was no change in onset time and amplitude. The SMT showed a different MRCP than the RMT, suggesting that the ecological validity of the task should be fully considered when investigating the cortical activity associated with motor skill learning using MRCP. Conclusion Ecological validity of the study should be fully considered when investigating the cortical activity associated with motor skill learning using MRCP. Moreover, it is important to understand the differences between the two methods when applied clinically.
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Affiliation(s)
- Kakuya Ogahara
- Department of Health Sciences, Graduate School of Biomedical Sciences, Health Sciences, Nagasaki University, Nagasaki, Japan
- Department of Occupational Therapy, Kanagawa University of Human Services, Yokosuka, Japan
| | - Akira Nakashima
- Department of Health Sciences, Graduate School of Biomedical Sciences, Health Sciences, Nagasaki University, Nagasaki, Japan
| | - Tomotaka Suzuki
- Department of Physical Therapy, Kanagawa University of Human Services, Yokosuka, Japan
| | - Kenichi Sugawara
- Department of Physical Therapy, Kanagawa University of Human Services, Yokosuka, Japan
| | - Naoshin Yoshida
- Department of Health Sciences, Graduate School of Biomedical Sciences, Health Sciences, Nagasaki University, Nagasaki, Japan
| | - Arihiro Hatta
- Department of Physical Recreation, School of Physical Education, Tokai University, Hiratsuka, Japan
| | - Takefumi Moriuchi
- Department of Health Sciences, Graduate School of Biomedical Sciences, Health Sciences, Nagasaki University, Nagasaki, Japan
| | - Toshio Higashi
- Department of Health Sciences, Graduate School of Biomedical Sciences, Health Sciences, Nagasaki University, Nagasaki, Japan
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Watanabe A, Sawamura D, Nakazono H, Tokikuni Y, Miura H, Sugawara K, Fuyama K, Tohyama H, Yoshida S, Sakai S. Transcranial direct current stimulation to the left dorsolateral prefrontal cortex enhances early dexterity skills with the left non-dominant hand: a randomized controlled trial. J Transl Med 2023; 21:143. [PMID: 36823635 PMCID: PMC9951449 DOI: 10.1186/s12967-023-03989-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 02/14/2023] [Indexed: 02/25/2023] Open
Abstract
BACKGROUND The left dorsolateral prefrontal cortex (DLPFC) is involved in early-phase manual dexterity skill acquisition when cognitive control processes, such as integration and complexity demands, are required. However, the effectiveness of left DLPFC transcranial direct current stimulation (tDCS) on early-phase motor learning and whether its effectiveness depends on the cognitive demand of the target task are unclear. This study aimed to investigate whether tDCS over the left DLPFC improves non-dominant hand dexterity performance and determine if its efficacy depends on the cognitive demand of the target task. METHODS In this randomized, double-blind, sham-controlled trial, 70 healthy, right-handed, young adult participants were recruited. They were randomly allocated to the active tDCS (2 mA for 20 min) or sham groups and repeatedly performed the Purdue Pegboard Test (PPT) left-handed peg task and left-handed assembly task three times: pre-tDCS, during tDCS, and post tDCS. RESULTS The final sample comprised 66 healthy young adults (mean age, 22.73 ± 1.57 years). There were significant interactions between group and time in both PPT tasks, indicating significantly higher performance of those in the active tDCS group than those in the sham group post tDCS (p < 0.001). Moreover, a greater benefit was observed in the left-handed assembly task performance than in the peg task performance (p < 0.001). No significant correlation between baseline performance and benefits from tDCS was observed in either task. CONCLUSIONS These results demonstrated that prefrontal tDCS significantly improved early-phase manual dexterity skill acquisition, and its benefits were greater for the task with high cognitive demands. These findings contribute to a deeper understanding of the underlying neurophysiological mechanisms of the left DLPFC in the modulation of early-phase dexterity skill acquisition. TRIAL REGISTRATION This study was registered in the University Hospital Medical Information Network Clinical Trial Registry in Japan (UMIN000046868), Registered February 8, 2022 https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000053467.
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Affiliation(s)
- Akihiro Watanabe
- grid.39158.360000 0001 2173 7691Graduate School of Health Sciences, Hokkaido University, Sapporo, 060-0812 Japan
| | - Daisuke Sawamura
- Department of Rehabilitation Science, Faculty of Health Sciences, Hokkaido University, Sapporo, Hokkaido, 060-0812, Japan.
| | - Hisato Nakazono
- grid.443459.b0000 0004 0374 9105Department of Occupational Therapy, Faculty of Medical Science, Fukuoka International University of Health and Welfare, Fukuoka, 814-0001 Japan
| | - Yukina Tokikuni
- grid.39158.360000 0001 2173 7691Graduate School of Health Sciences, Hokkaido University, Sapporo, 060-0812 Japan
| | - Hiroshi Miura
- grid.39158.360000 0001 2173 7691Graduate School of Health Sciences, Hokkaido University, Sapporo, 060-0812 Japan
| | - Kazuhiro Sugawara
- grid.263171.00000 0001 0691 0855Department of Physical Therapy, Sapporo Medical University, Sapporo, 060-8556 Japan
| | - Kanako Fuyama
- grid.412167.70000 0004 0378 6088Data Science Center, Promotion Unit, Institute of Health Science Innovation for Medical Care, Hokkaido University Hospital, Sapporo, 060-8648 Japan
| | - Harukazu Tohyama
- grid.39158.360000 0001 2173 7691Department of Rehabilitation Science, Faculty of Health Sciences, Hokkaido University, Sapporo, Hokkaido 060-0812 Japan
| | - Susumu Yoshida
- grid.412021.40000 0004 1769 5590Department of Rehabilitation Sciences, Health Sciences University of Hokkaido, Tobetsu, 061-0293 Japan
| | - Shinya Sakai
- grid.39158.360000 0001 2173 7691Department of Rehabilitation Science, Faculty of Health Sciences, Hokkaido University, Sapporo, Hokkaido 060-0812 Japan
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Bayle N, Lempereur M, Hutin E, Motavasseli D, Remy-Neris O, Gracies JM, Cornec G. Comparison of Various Smoothness Metrics for Upper Limb Movements in Middle-Aged Healthy Subjects. SENSORS (BASEL, SWITZERLAND) 2023; 23:1158. [PMID: 36772197 PMCID: PMC9919347 DOI: 10.3390/s23031158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/04/2023] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
BACKGOUND Metrics for movement smoothness include the number of zero-crossings on the acceleration profile (N0C), the log dimensionless jerk (LDLJ), the normalized averaged rectified jerk (NARJ) and the spectral arc length (SPARC). Sensitivity to the handedness and movement type of these four metrics was compared and correlations with other kinematic parameters were explored in healthy subjects. METHODS Thirty-two healthy participants underwent 3D upper limb motion analysis during two sets of pointing movements on each side. They performed forward- and backward-pointing movements at a self-selected speed to a target located ahead at shoulder height and at 90% arm length, with and without a three-second pause between forward and backward movements. Kinematics were collected, and smoothness metrics were computed. RESULTS LDLJ, NARJ and N0C found backward movements to be smoother, while SPARC found the opposite. Inter- and intra-subject coefficients of variation were lowest for SPARC. LDLJ, NARJ and N0C were correlated with each other and with movement time, unlike SPARC. CONCLUSION There are major differences between smoothness metrics measured in the temporal domain (N0C, LDLJ, NARJ), which depend on movement time, and those measured in the frequency domain, the SPARC, which gave results opposite to the other metrics when comparing backward and forward movements.
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Affiliation(s)
- Nicolas Bayle
- UR 7377 BIOTN, Paris Est Créteil University (UPEC), F-94000 Créteil, France
- AP-HP, Service de Rééducation Neurolocomotrice, Unité de Neurorééducation, Hôpitaux Universitaires Henri Mondor, F-94000 Créteil, France
| | | | - Emilie Hutin
- UR 7377 BIOTN, Paris Est Créteil University (UPEC), F-94000 Créteil, France
- AP-HP, Service de Rééducation Neurolocomotrice, Unité de Neurorééducation, Hôpitaux Universitaires Henri Mondor, F-94000 Créteil, France
| | - Damien Motavasseli
- UR 7377 BIOTN, Paris Est Créteil University (UPEC), F-94000 Créteil, France
- AP-HP, Service de Rééducation Neurolocomotrice, Unité de Neurorééducation, Hôpitaux Universitaires Henri Mondor, F-94000 Créteil, France
| | - Olivier Remy-Neris
- U1101 LaTIM, Brest University, F-29200 Brest, France
- Neurological Physical Medicine and Rehabilitation Department, University Hospital of Brest, F-29200 Brest, France
| | - Jean-Michel Gracies
- UR 7377 BIOTN, Paris Est Créteil University (UPEC), F-94000 Créteil, France
- AP-HP, Service de Rééducation Neurolocomotrice, Unité de Neurorééducation, Hôpitaux Universitaires Henri Mondor, F-94000 Créteil, France
| | - Gwenaël Cornec
- U1101 LaTIM, Brest University, F-29200 Brest, France
- Neurological Physical Medicine and Rehabilitation Department, University Hospital of Brest, F-29200 Brest, France
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Kulkarni CA, Wadhokar OC, Joshi MV. Physical Therapy Management in a Severe Case of Overlapping of Bone Post Crush Injury: A Case Report. Cureus 2022; 14:e29708. [PMID: 36320958 PMCID: PMC9616558 DOI: 10.7759/cureus.29708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 09/28/2022] [Indexed: 11/09/2022] Open
Abstract
Crush injuries are sustained due to high velocity and usually have a poor outcome. Since the compressive forces are of high energy, such injuries are usually seen in road traffic accidents or in industrial workers. Crush injuries of the hand account for relatively a smaller percentage of the injuries to the hand and include an open wound along with fracture dislocation of the carpometacarpal, interphalangeal, and radiocarpal joints. Since these injuries are uncommon, they are often overlooked in radiological findings or misdiagnosed. Their recognition depends on a careful physical and radiographic examination that may require trispiral computed tomograms. Physical therapy rehabilitation post-surgery becomes a necessity, especially in cases where the dominant hand is affected. Functional rehabilitation to improve the independence and efficiency of activities of daily living is a goal of utmost importance.
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