Different corticospinal control between discrete and rhythmic movement of the ankle
We investigated differences in corticospinal and spinal control between discrete and rhythmic ankle movements. Motor evoked potentials (MEPs) in the tibialis anterior and soleus muscles and soleus H-reflex were elicited in the middle of the plantar flexion phase during discrete ankle movement or in...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2014-07-01
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| Series: | Frontiers in Human Neuroscience |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fnhum.2014.00578/full |
| _version_ | 1819138034553061376 |
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| author | Yumeno eGoto Yasutomo eJono Ryota eHatanaka Yoshifumi eNomura Keisuke eTani Yuta eChujo Koichi eHiraoka |
| author_facet | Yumeno eGoto Yasutomo eJono Ryota eHatanaka Yoshifumi eNomura Keisuke eTani Yuta eChujo Koichi eHiraoka |
| author_sort | Yumeno eGoto |
| collection | DOAJ |
| description | We investigated differences in corticospinal and spinal control between discrete and rhythmic ankle movements. Motor evoked potentials (MEPs) in the tibialis anterior and soleus muscles and soleus H-reflex were elicited in the middle of the plantar flexion phase during discrete ankle movement or in the initial or later cycles of rhythmic ankle movement. The H-reflex was evoked at an intensity eliciting a small M-wave and MEPs were elicited at an intensity of 1.2 times the motor threshold of the soleus MEPs. Only trials in which background EMG level, ankle angle, and ankle velocity were similar among the movement conditions were included for data analysis. In addition, only trials with a similar M-wave were included for data analysis in the experiment evoking H-reflexes. Results showed that H reflex and MEP amplitudes in the soleus muscle during discrete movement were not significantly different from those during rhythmic movement. MEP amplitude in the tibialis anterior muscle during the later cycles of rhythmic movement was significantly larger than that during the initial cycle of the rhythmic movement or during discrete movement. Higher corticospinal excitability in the tibialis anterior muscle during the later cycles of rhythmic movement may reflect changes in corticospinal control from the initial cycle to the later cycles of rhythmic movement. |
| first_indexed | 2024-12-22T11:00:21Z |
| format | Article |
| id | doaj.art-776ee4a435c64256b69dbcf984e29a1c |
| institution | Directory Open Access Journal |
| issn | 1662-5161 |
| language | English |
| last_indexed | 2024-12-22T11:00:21Z |
| publishDate | 2014-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Human Neuroscience |
| spelling | doaj.art-776ee4a435c64256b69dbcf984e29a1c2022-12-21T18:28:30ZengFrontiers Media S.A.Frontiers in Human Neuroscience1662-51612014-07-01810.3389/fnhum.2014.0057889607Different corticospinal control between discrete and rhythmic movement of the ankleYumeno eGoto0Yasutomo eJono1Ryota eHatanaka2Yoshifumi eNomura3Keisuke eTani4Yuta eChujo5Koichi eHiraoka6Osaka Prefecture UniversityOsaka Prefecture UniversityOsaka Prefecture UniversityOsaka Prefecture UniversityOsaka Prefecture UniversityOsaka Prefecture UniversityOsaka Prefecture UniversityWe investigated differences in corticospinal and spinal control between discrete and rhythmic ankle movements. Motor evoked potentials (MEPs) in the tibialis anterior and soleus muscles and soleus H-reflex were elicited in the middle of the plantar flexion phase during discrete ankle movement or in the initial or later cycles of rhythmic ankle movement. The H-reflex was evoked at an intensity eliciting a small M-wave and MEPs were elicited at an intensity of 1.2 times the motor threshold of the soleus MEPs. Only trials in which background EMG level, ankle angle, and ankle velocity were similar among the movement conditions were included for data analysis. In addition, only trials with a similar M-wave were included for data analysis in the experiment evoking H-reflexes. Results showed that H reflex and MEP amplitudes in the soleus muscle during discrete movement were not significantly different from those during rhythmic movement. MEP amplitude in the tibialis anterior muscle during the later cycles of rhythmic movement was significantly larger than that during the initial cycle of the rhythmic movement or during discrete movement. Higher corticospinal excitability in the tibialis anterior muscle during the later cycles of rhythmic movement may reflect changes in corticospinal control from the initial cycle to the later cycles of rhythmic movement.http://journal.frontiersin.org/Journal/10.3389/fnhum.2014.00578/fullH-Reflexcentral pattern generatorcorticospinal excitabilitymotor evoked potentialdiscrete movementrhythmic movement |
| spellingShingle | Yumeno eGoto Yasutomo eJono Ryota eHatanaka Yoshifumi eNomura Keisuke eTani Yuta eChujo Koichi eHiraoka Different corticospinal control between discrete and rhythmic movement of the ankle Frontiers in Human Neuroscience H-Reflex central pattern generator corticospinal excitability motor evoked potential discrete movement rhythmic movement |
| title | Different corticospinal control between discrete and rhythmic movement of the ankle |
| title_full | Different corticospinal control between discrete and rhythmic movement of the ankle |
| title_fullStr | Different corticospinal control between discrete and rhythmic movement of the ankle |
| title_full_unstemmed | Different corticospinal control between discrete and rhythmic movement of the ankle |
| title_short | Different corticospinal control between discrete and rhythmic movement of the ankle |
| title_sort | different corticospinal control between discrete and rhythmic movement of the ankle |
| topic | H-Reflex central pattern generator corticospinal excitability motor evoked potential discrete movement rhythmic movement |
| url | http://journal.frontiersin.org/Journal/10.3389/fnhum.2014.00578/full |
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