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Title: Coupling between Theta Oscillations and Cognitive Control Network during Cross-Modal Visual and Auditory Attention: Supramodal vs Modality-Specific Mechanisms      
dateReleased:
06-24-2016
description:
Cortical theta band oscillations (4-8 Hz) in EEG signals have been shown to be important for a variety of different cognitive control operations in visual attention paradigms. However the synchronization source of these signals as defined by fMRI BOLD activity and the extent to which theta oscillations play a role in multimodal attention remains unknown. Here we investigated the extent to which cross-modal visual and auditory attention impacts theta oscillations. Using a simultaneous EEGfMRI paradigm, healthy human participants performed an attentional vigilance task with six cross-modal conditions using naturalistic stimuli. To assess supramodal mechanisms, modulation of theta oscillation amplitude for attention to either visual or auditory stimuli was correlated with BOLD activity by conjunction analysis. Negative correlation was localized to cortical regions associated with the default mode network and positively with ventral premotor areas. Modality-associated attention to visual stimuli was marked by a positive correlation of theta and BOLD activity in frontoparietal area that was not observed in the auditory condition. A positive correlation of theta and BOLD activity was observed in auditory cortex, while a negative correlation of theta and BOLD activity was observed in visual cortex during auditory attention. The data support a supramodal interaction of theta activity with of DMN function, and modality-associated processes within fronto-parietal networks related to top-down theta related cognitive control in cross-modal visual attention. On the other hand, in sensory cortices there are opposing effects of theta activity during cross-modal auditory attention.
privacy:
information not available
aggregation:
instance of dataset
availability:
available
refinement:
analyzed data
dateModified:
07-13-2016
creators:
wuyiwang
ID:
1486
types:
image
name:
Homo sapiens
ID:
doi:10.1371/journal.pone.0158465
authors:
Wuyi Wang
Shivakumar Viswanathan
Taraz Lee
Scott T. Grafton
Suliann Ben Hamed
method:
magnetic resonance imaging
accessURL: http://neurovault.org/collections/1486/download
storedIn:
NeuroVault
qualifier:
gzip compressed
license:
CC0 license
format:
NIfTI
accessType:
download
authentication:
none
authorization:
none
abbreviation:
NeuroVault
homePage: http://neurovault.org/
ID:
SCR:003806
name:
NeuroVault
abbreviation:
NeuroVault
homePage: http://neurovault.org/
ID:
SCR:003806
name:
NeuroVault