Intra- and inter-hemispheric coupling of electroencephalographic 8-13 Hz rhythm in humans and force of static finger extension.
The coupling of electroencephalographic (EEG) 8-13 Hz oscillations during static right finger extension performed under four different force levels was analyzed in 12 right-handed subjects. Increases in force of static muscle contraction were accompanied by increases in the 8-13 Hz band coherence between the contralateral sensorimotor area (S1/M1) and the ipsilateral S1/M1, frontal and parietal cortex, between supplementary motor area and bilateral S1/M1, and between posterior parietal cortex and bilateral S1/M1. The results suggest increased functional coupling between primary and higher-order motor areas during increased motor effort.
Svoboda
Jirí
J
Department of Normal, Pathological and Clinical Physiology, Third Faculty of Medicine, Charles University Prague, Ke Karlovu 4, 120 00 Prague 2, Czech Republic.
Sovka
Pavel
P
Stancák
Andrej
A
D000328:Adult; D000513:Alpha Rhythm / Q000379:methods; D000704:Analysis of Variance; D001931:Brain Mapping; D004569:Electroencephalography / Q000379:methods*; D005260:Female; D005385:Fingers / Q000502:physiology*; D005625:Frontal Lobe / Q000502:physiology*; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D008297:Male; D009132:Muscles / Q000502:physiology; D010296:Parietal Lobe / Q000502:physiology*