Cargando…
Time Window of Perturbation-Induced Response Triggered by Ankle Motion and Body Sway above the Ankle
We determined the precise time windows of the electromyographic (EMG) response components triggered by ankle motion and by body sway above the ankle. A support surface under the feet of healthy young adult participants in the quiet stance was moved in translation. The EMG response component triggere...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7226339/ https://www.ncbi.nlm.nih.gov/pubmed/32290377 http://dx.doi.org/10.3390/brainsci10040230 |
_version_ | 1783534264094031872 |
---|---|
author | Hiraoka, Koichi Kuramitsu, Toru Nii, Naoki Osumi, Miyuki Tanaka, Nana |
author_facet | Hiraoka, Koichi Kuramitsu, Toru Nii, Naoki Osumi, Miyuki Tanaka, Nana |
author_sort | Hiraoka, Koichi |
collection | PubMed |
description | We determined the precise time windows of the electromyographic (EMG) response components triggered by ankle motion and by body sway above the ankle. A support surface under the feet of healthy young adult participants in the quiet stance was moved in translation. The EMG response component triggered by body displacement above the ankle began at 95–100 ms and ended 145–155 ms after the onset of the support surface translation. The EMG response triggered by ankle dorsiflexion began at 35–50 ms and ended 110–115 ms after the onset of the translation in the soleus muscle, indicating that the response component began at a time similar to the short-latency response. In contrast, the response component in the gastrocnemius muscle began noticeably after that. The EMG response triggered by ankle dorsiflexion began at 75–85 ms and ended 125–135 ms after the onset of the translation in the gastrocnemius muscle. Our findings indicate that the threshold of the early response component to the somatic sensation of the ankle motion in the soleus muscle is lower than that in the gastrocnemius muscle. The response component triggered by the ankle motion continued long after the end of ankle dorsiflexion, indicating that the early component is mediated not only by the monosynaptic stretch reflex pathway but also by the polysynaptic pathway. |
format | Online Article Text |
id | pubmed-7226339 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-72263392020-05-18 Time Window of Perturbation-Induced Response Triggered by Ankle Motion and Body Sway above the Ankle Hiraoka, Koichi Kuramitsu, Toru Nii, Naoki Osumi, Miyuki Tanaka, Nana Brain Sci Article We determined the precise time windows of the electromyographic (EMG) response components triggered by ankle motion and by body sway above the ankle. A support surface under the feet of healthy young adult participants in the quiet stance was moved in translation. The EMG response component triggered by body displacement above the ankle began at 95–100 ms and ended 145–155 ms after the onset of the support surface translation. The EMG response triggered by ankle dorsiflexion began at 35–50 ms and ended 110–115 ms after the onset of the translation in the soleus muscle, indicating that the response component began at a time similar to the short-latency response. In contrast, the response component in the gastrocnemius muscle began noticeably after that. The EMG response triggered by ankle dorsiflexion began at 75–85 ms and ended 125–135 ms after the onset of the translation in the gastrocnemius muscle. Our findings indicate that the threshold of the early response component to the somatic sensation of the ankle motion in the soleus muscle is lower than that in the gastrocnemius muscle. The response component triggered by the ankle motion continued long after the end of ankle dorsiflexion, indicating that the early component is mediated not only by the monosynaptic stretch reflex pathway but also by the polysynaptic pathway. MDPI 2020-04-11 /pmc/articles/PMC7226339/ /pubmed/32290377 http://dx.doi.org/10.3390/brainsci10040230 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Hiraoka, Koichi Kuramitsu, Toru Nii, Naoki Osumi, Miyuki Tanaka, Nana Time Window of Perturbation-Induced Response Triggered by Ankle Motion and Body Sway above the Ankle |
title | Time Window of Perturbation-Induced Response Triggered by Ankle Motion and Body Sway above the Ankle |
title_full | Time Window of Perturbation-Induced Response Triggered by Ankle Motion and Body Sway above the Ankle |
title_fullStr | Time Window of Perturbation-Induced Response Triggered by Ankle Motion and Body Sway above the Ankle |
title_full_unstemmed | Time Window of Perturbation-Induced Response Triggered by Ankle Motion and Body Sway above the Ankle |
title_short | Time Window of Perturbation-Induced Response Triggered by Ankle Motion and Body Sway above the Ankle |
title_sort | time window of perturbation-induced response triggered by ankle motion and body sway above the ankle |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7226339/ https://www.ncbi.nlm.nih.gov/pubmed/32290377 http://dx.doi.org/10.3390/brainsci10040230 |
work_keys_str_mv | AT hiraokakoichi timewindowofperturbationinducedresponsetriggeredbyanklemotionandbodyswayabovetheankle AT kuramitsutoru timewindowofperturbationinducedresponsetriggeredbyanklemotionandbodyswayabovetheankle AT niinaoki timewindowofperturbationinducedresponsetriggeredbyanklemotionandbodyswayabovetheankle AT osumimiyuki timewindowofperturbationinducedresponsetriggeredbyanklemotionandbodyswayabovetheankle AT tanakanana timewindowofperturbationinducedresponsetriggeredbyanklemotionandbodyswayabovetheankle |