Data from: Cross-frequency synchronization connects networks of fast and slow oscillations during visual working memory maintenance

Neuronal activity in sensory and fronto-parietal (FP) areas underlies the
representation and attentional control, respectively, of sensory
information maintained in visual working memory (VWM). Within these
regions, beta/gamma phase-synchronization supports the integration of
sensory functions, while synchronization in theta/alpha bands supports the
regulation of attentional functions. A key challenge is to understand
which mechanisms integrate neuronal processing across these distinct
frequencies and thereby the sensory and attentional functions. We
investigated whether such integration could be achieved by cross-frequency
phase synchrony (CFS). Using concurrent magneto- and
electroencephalography, we found that CFS was load-dependently enhanced
between theta and alpha–gamma and between alpha and beta-gamma
oscillations during VWM maintenance among visual, FP, and dorsal attention
(DA) systems. CFS also connected the hubs of within-frequency-synchronized
networks and its strength predicted individual VWM capacity. We propose
that CFS integrates processing among synchronized neuronal networks from
theta to gamma frequencies to link sensory and attentional functions.