Isometric agonist and antagonist muscle activation interacts differently with 140-Hz transcranial alternating current stimulation aftereffects at different intensities
| Autor: | Walter Paulus, Andrea Antal, Y. Shorafa, Michael A. Nitsche, Manuel Hewitt, I. Halawa |
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| Rok vydání: | 2021 |
| Předmět: |
Adult
Male Physiology Musculoskeletal Physiological Phenomena Stimulation Isometric exercise Transcranial Direct Current Stimulation Young Adult 03 medical and health sciences 0302 clinical medicine Isometric Contraction Surround inhibition Humans Single-Blind Method Muscle Skeletal 030304 developmental biology Transcranial alternating current stimulation 0303 health sciences Cross-Over Studies Chemistry General Neuroscience Muscle activation Evoked Potentials Motor Excitatory postsynaptic potential Female Neuroscience 030217 neurology & neurosurgery |
| Zdroj: | Journal of Neurophysiology. 126:340-348 |
| ISSN: | 1522-1598 0022-3077 |
| DOI: | 10.1152/jn.00065.2021 |
| Popis: | Stimulation intensity and activation of center versus surround muscles affect cortical excitability alterations generated by 140-Hz tACS. At rest, excitatory aftereffects were induced by tACS with 1 mA, but not 2 mA stimulation intensity. With agonistic muscle activation, excitability first decreases, and then increases with 2 mA. For antagonist activation, the MEP amplitude reduction observed in the sham condition is counteracted upon by 1 and 2 mA tACS. This reflects the relation of LTP-like aftereffects to Ca2+ concentration alterations. |
| Databáze: | OpenAIRE |
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