Alpha-Band Phase Synchrony Is Related to Activity in the Fronto-Parietal Adaptive Control Network

• DOI: 10.1523/jneurosci.1358-12.2012
• Publication Date: 2012-10-10T18:54:32Z
• Authors: Sepideh Sadaghiani; René Scheeringa; Katia Lehongre; Benjamin Morillon; Anne-Lise Giraud; Mark D'Esposito; Andreas Kleinschmidt
• Keywords: Alpha (finance)

Neural oscillations in the alpha band (8–12 Hz) are increasingly viewed as an active inhibitory mechanism that gates and controls sensory information processing a function of cognitive relevance. Extending this view, phase synchronization across distant cortical regions could regulate integration information. Here, we investigated whether such long-range cross-region coupling is intrinsically selectively linked to activity distinct functionally specialized brain network. If so, would provide new insight into functional role synchrony. We adapted phase-locking value assess fluctuations synchrony occur over time ongoing activity. Concurrent EEG magnetic resonance imaging (fMRI) were recorded during resting wakefulness 26 human subjects. Fluctuations global upper correlated positively with several prefrontal parietal (as measured by fMRI). fMRI intrinsic connectivity analysis confirmed these correspond well known fronto-parietal (FP) Spectral correlations network's no other frequency showed equivalent results. This selective association supports relation between large-scale functions associated FP network has been suggested implement phasic aspects top-down modulation initiation change moment-to-moment control. Mechanistically, suited support functions. Complementing our previous findings related oscillation power neural structures serving tonic control, current link underpinning control alertness task requirements.