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  Dynamics of mu-rhythm suppression caused by median nerve stimulation: a magnetoencephalographic study in human subjects

Nikulin, V. V., Linkenkaer-Hansen, K., Wikström, H., Kesäniemi, M., Antonova, E. V., Ilmoniemi, R. J., et al. (2000). Dynamics of mu-rhythm suppression caused by median nerve stimulation: a magnetoencephalographic study in human subjects. Neuroscience Letters, 294(3), 163-166. doi:10.1016/S0304-3940(00)01562-7.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-4156-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-6C28-A
Genre: Journal Article

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 Creators:
Nikulin, Vadim V.1, Author              
Linkenkaer-Hansen, Klaus, Author
Wikström, Heidi, Author
Kesäniemi, Martti, Author
Antonova, Elena V., Author
Ilmoniemi, Risto J., Author
Huttunen, Juha, Author
Affiliations:
1External Organizations, ou_persistent22              

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Free keywords: Event-related desynchronization; Brain oscillations; Primary somatosensory cortex
 Abstract: We studied event-related desynchronization (ERD) of the 8–13 Hz rhythm (mu rhythm) of the primary somatosensory cortex (SI) caused by contra- and ipsilateral median-nerve stimulation. We used whole-head magnetoencephalography (MEG) and wavelet analysis together with our newly developed color-coded single-trial ERD display. The somatosensory stimuli suppressed mu rhythm at both contra- and ipsilateral SI, but the attenuation was clearly lateralized, being at least 20% stronger contra- than ipsilaterally. Moreover, repeated stimulation significantly reduced mu-rhythm ERD in the ipsilateral but not in the contralateral hemisphere in the course of the experiment. The observed lateralization is in agreement with the classical concept of a dominant role of the contralateral hemisphere in the processing of somatosensory information. The strong ipsilateral ERD in the beginning of the experiment may reflect the presence of non-specific arousal-like activation, which attenuates toward the end of the experiment.

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Language(s): eng - English
 Dates: 2000-09-292000-08-252000-10-022000-11-062000-11-24
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1016/S0304-3940(00)01562-7
 Degree: -

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Title: Neuroscience Letters
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 294 (3) Sequence Number: - Start / End Page: 163 - 166 Identifier: ISSN: 0304-3940
CoNE: https://pure.mpg.de/cone/journals/resource/954925512448