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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
4
|
| pubmed:dateCreated |
1997-6-5
|
| pubmed:abstractText |
EEGs were recorded from sensorimotor areas of 12 subjects performing unilateral self-paced brisk and slow finger movements. Two different beta components were found below 30 Hz: (i) One component, at about twice the frequency of the mu rhythm, showed desynchronization in parallel with the mu rhythm starting at about 2 s prior to movement. Measurements of bicoherence have shown that this beta component can be non-linearly related to the arch-shaped mu rhythm. (ii) Another beta component started to desynchronize about 1 s prior to movement, recovered very fast and displayed a pronounced post-movement beta synchronization (PMBS) within the first second after movement-offset. This PMBS was found in the frequency band between 12 and 26 Hz. The average percentage power increase at contralateral sensorimotor area was 232% (SD = 82%) for brisk and 265% (SD = 102%) for slow movements. The PMBS was of contralateral dominance and is interpreted as a correlate of active inhibition or idling of the primary motor area following movement execution.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:status |
MEDLINE
|
| pubmed:month |
Apr
|
| pubmed:issn |
0013-4694
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
102
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
316-25
|
| pubmed:dateRevised |
2008-9-9
|
| pubmed:meshHeading | |
| pubmed:year |
1997
|
| pubmed:articleTitle |
On the existence of different types of central beta rhythms below 30 Hz.
|
| pubmed:affiliation |
Ludwig Boltzmann-Institute of Medical Informatics and Neuroinformatics, Graz, Austria.
|
| pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|