Intermuscular Coherence in the Presence of Electrical Stimulation
The nervous system uses oscillations to convey information efficiently. Inter-muscular coherence in the 15–35 Hz range is thought to represent common cortical drive to muscles, but is also in the frequency band in which electrical stimulation is applied to restore movement following neurological dis...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2021-05-01
|
| Series: | Frontiers in Systems Neuroscience |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fnsys.2021.647430/full |
| _version_ | 1819091085323927552 |
|---|---|
| author | Jonathan A. Norton |
| author_facet | Jonathan A. Norton |
| author_sort | Jonathan A. Norton |
| collection | DOAJ |
| description | The nervous system uses oscillations to convey information efficiently. Inter-muscular coherence in the 15–35 Hz range is thought to represent common cortical drive to muscles, but is also in the frequency band in which electrical stimulation is applied to restore movement following neurological disease or injury. We wished to determine if, when stimulation is applied at the peak frequency of the coherence spectra it was still possible to determine voluntary effort. Using healthy human subjects we stimulated muscles in the arms and legs, separate experiments, while recording EMG activity from pairs of muscles including the stimulated muscles. Offline coherence analysis was performed. When stimulation is greater than motor threshold, and applied at the peak of the coherence spectra a new peak appears in the spectra, presumably representing a new frequency of oscillation within the nervous system. This does not appear at lower stimulation levels, or with lower frequencies. The nervous system is capable of switching oscillatory frequencies to account for noise in the environment. |
| first_indexed | 2024-12-21T22:34:07Z |
| format | Article |
| id | doaj.art-d8d2ad77726e41b2bfeb0e87b91cf91e |
| institution | Directory Open Access Journal |
| issn | 1662-5137 |
| language | English |
| last_indexed | 2024-12-21T22:34:07Z |
| publishDate | 2021-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Systems Neuroscience |
| spelling | doaj.art-d8d2ad77726e41b2bfeb0e87b91cf91e2022-12-21T18:48:01ZengFrontiers Media S.A.Frontiers in Systems Neuroscience1662-51372021-05-011510.3389/fnsys.2021.647430647430Intermuscular Coherence in the Presence of Electrical StimulationJonathan A. NortonThe nervous system uses oscillations to convey information efficiently. Inter-muscular coherence in the 15–35 Hz range is thought to represent common cortical drive to muscles, but is also in the frequency band in which electrical stimulation is applied to restore movement following neurological disease or injury. We wished to determine if, when stimulation is applied at the peak frequency of the coherence spectra it was still possible to determine voluntary effort. Using healthy human subjects we stimulated muscles in the arms and legs, separate experiments, while recording EMG activity from pairs of muscles including the stimulated muscles. Offline coherence analysis was performed. When stimulation is greater than motor threshold, and applied at the peak of the coherence spectra a new peak appears in the spectra, presumably representing a new frequency of oscillation within the nervous system. This does not appear at lower stimulation levels, or with lower frequencies. The nervous system is capable of switching oscillatory frequencies to account for noise in the environment.https://www.frontiersin.org/articles/10.3389/fnsys.2021.647430/fullcoherenceelectrical stimulationsensory feedbackmuscleoscillation |
| spellingShingle | Jonathan A. Norton Intermuscular Coherence in the Presence of Electrical Stimulation Frontiers in Systems Neuroscience coherence electrical stimulation sensory feedback muscle oscillation |
| title | Intermuscular Coherence in the Presence of Electrical Stimulation |
| title_full | Intermuscular Coherence in the Presence of Electrical Stimulation |
| title_fullStr | Intermuscular Coherence in the Presence of Electrical Stimulation |
| title_full_unstemmed | Intermuscular Coherence in the Presence of Electrical Stimulation |
| title_short | Intermuscular Coherence in the Presence of Electrical Stimulation |
| title_sort | intermuscular coherence in the presence of electrical stimulation |
| topic | coherence electrical stimulation sensory feedback muscle oscillation |
| url | https://www.frontiersin.org/articles/10.3389/fnsys.2021.647430/full |
| work_keys_str_mv | AT jonathananorton intermuscularcoherenceinthepresenceofelectricalstimulation |