Change in Reciprocal Inhibition of the Forearm with Motor Imagery among Patients with Chronic Stroke
We investigated cortically mediated changes in reciprocal inhibition (RI) following motor imagery (MI) in short- and long(er)-term periods. The goals of this study were (1) to describe RI during MI in patients with chronic stroke and (2) to examine the change in RI after MI-based brain-machine inter...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Neural Plasticity |
| Online Access: | http://dx.doi.org/10.1155/2018/3946367 |
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| author | Michiyuki Kawakami Kohei Okuyama Yoko Takahashi Miho Hiramoto Atsuko Nishimura Junichi Ushiba Toshiyuki Fujiwara Meigen Liu |
| author_facet | Michiyuki Kawakami Kohei Okuyama Yoko Takahashi Miho Hiramoto Atsuko Nishimura Junichi Ushiba Toshiyuki Fujiwara Meigen Liu |
| author_sort | Michiyuki Kawakami |
| collection | DOAJ |
| description | We investigated cortically mediated changes in reciprocal inhibition (RI) following motor imagery (MI) in short- and long(er)-term periods. The goals of this study were (1) to describe RI during MI in patients with chronic stroke and (2) to examine the change in RI after MI-based brain-machine interface (BMI) training. Twenty-four chronic stroke patients participated in study 1. All patients imagined wrist extension on the affected side. RI from the extensor carpi radialis to the flexor carpi radialis (FCR) was assessed using a FCR H reflex conditioning-test paradigm. We calculated the “MI effect score on RI” (RI value during MI divided by that at rest) and compared that score according to lesion location. RI during MI showed a significant enhancement compared with RI at rest. The MI effect score on RI in the subcortical lesion group was significantly greater than that in the cortical lesion group. Eleven stroke patients participated in study 2. All patients performed BMI training for 10 days. The MI effect score on RI at a 20 ms interstimulus interval was significantly increased after BMI compared with baseline. In conclusion, mental practice with MI may induce plastic change in spinal reciprocal inhibitory circuits in patients with stroke. |
| format | Article |
| id | doaj-art-d497289b917f485992f7d7a0316c7021 |
| institution | Kabale University |
| issn | 2090-5904 1687-5443 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Neural Plasticity |
| spelling | doaj-art-d497289b917f485992f7d7a0316c70212025-02-03T01:01:49ZengWileyNeural Plasticity2090-59041687-54432018-01-01201810.1155/2018/39463673946367Change in Reciprocal Inhibition of the Forearm with Motor Imagery among Patients with Chronic StrokeMichiyuki Kawakami0Kohei Okuyama1Yoko Takahashi2Miho Hiramoto3Atsuko Nishimura4Junichi Ushiba5Toshiyuki Fujiwara6Meigen Liu7Department of Rehabilitation Medicine, Keio University School of Medicine, Tokyo, JapanDepartment of Rehabilitation Medicine, Keio University School of Medicine, Tokyo, JapanDepartment of Rehabilitation Medicine, Keio University School of Medicine, Tokyo, JapanDepartment of Rehabilitation Medicine, Keio University School of Medicine, Tokyo, JapanDepartment of Rehabilitation Medicine, Keio University School of Medicine, Tokyo, JapanDepartment of Biosciences and Informatics, Faculty of Science and Technology, Keio University, Kanagawa, JapanDepartment of Physical medicine and Rehabilitation, Juntendo University Graduate School of Medicine, Tokyo, JapanDepartment of Rehabilitation Medicine, Keio University School of Medicine, Tokyo, JapanWe investigated cortically mediated changes in reciprocal inhibition (RI) following motor imagery (MI) in short- and long(er)-term periods. The goals of this study were (1) to describe RI during MI in patients with chronic stroke and (2) to examine the change in RI after MI-based brain-machine interface (BMI) training. Twenty-four chronic stroke patients participated in study 1. All patients imagined wrist extension on the affected side. RI from the extensor carpi radialis to the flexor carpi radialis (FCR) was assessed using a FCR H reflex conditioning-test paradigm. We calculated the “MI effect score on RI” (RI value during MI divided by that at rest) and compared that score according to lesion location. RI during MI showed a significant enhancement compared with RI at rest. The MI effect score on RI in the subcortical lesion group was significantly greater than that in the cortical lesion group. Eleven stroke patients participated in study 2. All patients performed BMI training for 10 days. The MI effect score on RI at a 20 ms interstimulus interval was significantly increased after BMI compared with baseline. In conclusion, mental practice with MI may induce plastic change in spinal reciprocal inhibitory circuits in patients with stroke.http://dx.doi.org/10.1155/2018/3946367 |
| spellingShingle | Michiyuki Kawakami Kohei Okuyama Yoko Takahashi Miho Hiramoto Atsuko Nishimura Junichi Ushiba Toshiyuki Fujiwara Meigen Liu Change in Reciprocal Inhibition of the Forearm with Motor Imagery among Patients with Chronic Stroke Neural Plasticity |
| title | Change in Reciprocal Inhibition of the Forearm with Motor Imagery among Patients with Chronic Stroke |
| title_full | Change in Reciprocal Inhibition of the Forearm with Motor Imagery among Patients with Chronic Stroke |
| title_fullStr | Change in Reciprocal Inhibition of the Forearm with Motor Imagery among Patients with Chronic Stroke |
| title_full_unstemmed | Change in Reciprocal Inhibition of the Forearm with Motor Imagery among Patients with Chronic Stroke |
| title_short | Change in Reciprocal Inhibition of the Forearm with Motor Imagery among Patients with Chronic Stroke |
| title_sort | change in reciprocal inhibition of the forearm with motor imagery among patients with chronic stroke |
| url | http://dx.doi.org/10.1155/2018/3946367 |
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