Event-Related changes of band power and coherence: methodology and interpretation - PubMed (original) (raw)
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Event-Related changes of band power and coherence: methodology and interpretation
G Pfurtscheller et al. J Clin Neurophysiol. 1999 Nov.
Abstract
Event-related calculation of band power changes can be used to quantify event-related desynchronization, event-related synchronization, and event-related coherence (ERCoh). It is shown that in the case of a motor task especially, the ERCoh time course depends on the type of EEG derivation used, whereby referenced EEG data can result in a bilateral coherence increase, although both hemispheres generate independent sensorimotor rhythms. It is further shown that not only Rolandic mu rhythms but also central beta rhythms display a lack of interhemispheric linear phase coupling.
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