High-alpha band synchronization across frontal, parietal and visual cortex mediates behavioral and neuronal effects of visuospatial attention

NeuroImage
Muriel LobierSatu Palva

Abstract

Visuospatial attention prioritizes processing of attended visual stimuli. It is characterized by lateralized alpha-band (8-14 Hz) amplitude suppression in visual cortex and increased neuronal activity in a network of frontal and parietal areas. It has remained unknown what mechanisms coordinate neuronal processing among frontoparietal network and visual cortices and implement the attention-related modulations of alpha-band amplitudes and behavior. We investigated whether large-scale network synchronization could be such a mechanism. We recorded human cortical activity with magnetoencephalography (MEG) during a visuospatial attention task. We then identified the frequencies and anatomical networks of inter-areal phase synchronization from source localized MEG data. We found that visuospatial attention is associated with robust and sustained long-range synchronization of cortical oscillations exclusively in the high-alpha (10-14 Hz) frequency band. This synchronization connected frontal, parietal and visual regions and was observed concurrently with amplitude suppression of low-alpha (6-9 Hz) band oscillations in visual cortex. Furthermore, stronger high-alpha phase synchronization was associated with decreased reaction times to ...Continue Reading

Citations

Nov 3, 2017·The European Journal of Neuroscience·J Matias Palva, Satu Palva
Jun 19, 2019·Journal of Cognitive Neuroscience·Alessandro BenedettoAlice Tomassini
Dec 12, 2018·Cerebral Cortex·Sepideh SadaghianiMark D'Esposito
Aug 26, 2020·Cognitive, Affective & Behavioral Neuroscience·Jessica Sanches Braga FigueiraAndreas Keil
Sep 20, 2018·Neuroscience Journal·Gahangir HossainRobert Kozma
Oct 25, 2020·Nature Communications·G ArnulfoJ M Palva
Nov 10, 2020·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Andrew ZillgittSusan M Bowyer
Sep 9, 2020·NeuroImage·Mats W J van EsJan-Mathijs Schoffelen
Mar 21, 2021·Nature Communications·Domenica VenieroGregor Thut
Apr 8, 2021·Investigative Ophthalmology & Visual Science·Sinan LiuLuyang Tao
Sep 27, 2019·Vision Research·Hiroyuki MitsudoShozo Tobimatsu
Jun 26, 2021·Trends in Neurosciences·Charline PeyloPaul Sauseng
Oct 8, 2021·Frontiers in Systems Neuroscience·Mohamed KhatebYitzhak Schiller

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