Oscillatory brain activity during multisensory attention reflects activation, disinhibition, and cognitive control

Autor(en): Friese, Uwe 
Daume, Jonathan 
Goeschl, Florian 
Koenig, Peter 
Wang, Peng
Engel, Andreas K. 
Stichwörter: AREAS; GAMMA-BAND ACTIVITY; IMAGING DATA; INTEGRATION; Multidisciplinary Sciences; NEURONAL SYNCHRONIZATION; PREFRONTAL CORTEX; RESPONSES; Science & Technology - Other Topics; SELECTIVE ATTENTION; SPATIAL ATTENTION; VISUAL-CORTEX
Erscheinungsdatum: 2016
Herausgeber: NATURE PUBLISHING GROUP
Journal: SCIENTIFIC REPORTS
Volumen: 6
Zusammenfassung: 
In this study, we used a novel multisensory attention paradigm to investigate attention-modulated cortical oscillations over a wide range of frequencies using magnetencephalography in healthy human participants. By employing a task that required the evaluation of the congruence of audio-visual stimuli, we promoted the formation of widespread cortical networks including early sensory cortices as well as regions associated with cognitive control. We found that attention led to increased high-frequency gamma-band activity and decreased lower frequency theta-, alpha-, and beta-band activity in early sensory cortex areas. Moreover, alpha-band coherence decreased in visual cortex. Frontal cortex was found to exert attentional control through increased low-frequency phase synchronisation. Crossmodal congruence modulated beta-band coherence in mid-cingulate and superior temporal cortex. Together, these results offer an integrative view on the concurrence of oscillations at different frequencies during multisensory attention.
ISSN: 20452322
DOI: 10.1038/srep32775

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