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

Show full item record



Permalink

http://hdl.handle.net/10138/169498

Citation

Siebenhuhner , F , Wang , S H , Palva , J M & Palva , S 2016 , ' Cross-frequency synchronization connects networks of fast and slow oscillations during visual working memory maintenance ' , eLife , vol. 5 , 13451 . https://doi.org/10.7554/eLife.13451

Title: Cross-frequency synchronization connects networks of fast and slow oscillations during visual working memory maintenance
Author: Siebenhuhner, Felix; Wang, Sheng H.; Palva, J. Matias; Palva, Satu
Contributor: University of Helsinki, Neuroscience Center
University of Helsinki, Neuroscience Center
University of Helsinki, Neuroscience Center
University of Helsinki, Neuroscience Center
Date: 2016-09-26
Language: eng
Number of pages: 31
Belongs to series: eLife
ISSN: 2050-084X
URI: http://hdl.handle.net/10138/169498
Abstract: 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.
Subject: SHORT-TERM-MEMORY
POSTERIOR PARIETAL CORTEX
GAMMA-BAND ACTIVITY
PREFRONTAL CORTEX
PHASE SYNCHRONIZATION
ALPHA OSCILLATIONS
BRAIN NETWORKS
CORTICAL OSCILLATIONS
NEURONAL SYNCHRONY
HUMAN HIPPOCAMPUS
3112 Neurosciences
3126 Surgery, anesthesiology, intensive care, radiology
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
e13451_download.pdf 4.105Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record