Functional correlates of a three-component spatial model of the alpha rhythm.
We applied a three-component (temporal, occipital and parietal) spatial model to EEG data obtained from 46 young and 11 elderly subjects. With closed eyes the mean alpha frequency was 9.51 Hz for the temporal, 9.88 Hz for the occipital and 10.14 Hz for the parietal component. The power of the occipital component was larger than that of the others. With open eyes it was reduced to the same level as the temporal and parietal components. The power of the occipital component decreased significantly with age.
Gratton
G
G
Department of Clinical Neurophysiology, FIDIA Research Laboratories, Abano Terme, Italy.
Villa
A E
AE
Fabiani
M
M
Colombis
G
G
Palin
E
E
Bolcioni
G
G
Fiori
M G
MG
D000328:Adult; D000368:Aged; D000375:Aging / Q000502:physiology*; D000513:Alpha Rhythm; D000704:Analysis of Variance; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D009778:Occipital Lobe / Q000502:physiology; D010296:Parietal Lobe / Q000502:physiology; D012016:Reference Values; D013702:Temporal Lobe / Q000502:physiology