DOI: 10.5061/dryad.bf1b1
title: Data from: Deactivation in the posterior mid-cingulate cortex reflects perceptual transitions during binocular rivalry: evidence from simultaneous EEG-fMRI

description: Binocular rivalry is a phenomenon in which perception spontaneously shifts
 between two different images that are dichoptically presented to the
 viewer. By elucidating the cortical networks responsible for these
 stochastic fluctuations in perception, we can potentially learn much about
 the neural correlates of visual awareness. We obtained concurrent EEG-fMRI
 data for a group of 20 healthy human subjects during the continuous
 presentation of dichoptic visual stimuli. The two eyes’ images were tagged
 with different temporal frequencies so that eye specific steady-state
 visual evoked potential (SSVEP) signals could be extracted from the EEG
 data for direct comparison with changes in fMRI BOLD activity associated
 with binocular rivalry. We additionally included a smooth replay condition
 that emulated the perceptual transitions experienced during binocular
 rivalry as a control stimulus. We evaluated a novel SSVEP-informed fMRI
 analysis in this study in order to delineate the temporal dynamics of
 rivalry-related BOLD activity from both an electrophysiological and
 behavioral perspective. In this manner, we assessed BOLD activity during
 rivalry that was directly correlated with peaks and crosses of the two
 rivaling, frequency-tagged SSVEP signals, for comparison with BOLD
 activity associated with subject reported perceptual transitions. Our
 findings point to a critical role of a right lateralized fronto-parietal
 network in the processing of bistable stimuli, given that BOLD activity in
 the right superior/inferior parietal lobules was significantly elevated
 throughout binocular rivalry and in particular during perceptual
 transitions, compared with the replay condition. Based on the
 SSVEP-informed analysis, rivalry was further associated with significantly
 enhanced BOLD suppression in the posterior mid-cingulate cortex during
 perceptual transitions, compared with SSVEP crosses. Overall, this work
 points to a careful interplay between early visual areas, the right
 posterior parietal cortex and the mid-cingulate cortex in mediating the
 spontaneous perceptual changes associated with binocular rivalry and has
 significant implications for future multimodal imaging studies of
 perception and awareness.
description: EEG Channel
 LocationsBrainProducts 64 channel
 EEG electrode locations.bp64_new.locS01 DataSimultaneous EEG-fMRI and MRI data for Subject 01.S01.zipS02 DataSimultaneous EEG-fMRI and MRI data for Subject 02.S02.zipS03 DataSimultaneous EEG-fMRI and MRI data for Subject 03.S03.zipS04 DataSimultaneous EEG-fMRI and MRI data for Subject 04.S04.zipS05 DataSimultaneous EEG-fMRI and MRI data for Subject 05.S05.zipS06 DataSimultaneous EEG-fMRI and MRI data for Subject 06.S06.zipS07 DataSimultaneous EEG-fMRI and MRI data for Subject 07.S07.zipS08 DataSimultaneous EEG-fMRI and MRI data for Subject 08.S08.zipS09 DataSimultaneous EEG-fMRI and MRI data for Subject 09.S09.zipS10 DataSimultaneous EEG-fMRI and MRI data for Subject 10.S10.zipS11 DataSimultaneous EEG-fMRI and MRI data for Subject 11.S11.zipS12 DataSimultaneous EEG-fMRI and MRI data for Subject 12.S12.zipS13 DataSimultaneous EEG-fMRI and MRI data for Subject 13.S13.zipS14 DataSimultaneous EEG-fMRI and MRI data for Subject 14.S14.zipS15 DataSimultaneous EEG-fMRI and MRI data for Subject 15.S15.zipS16 DataSimultaneous EEG-fMRI and MRI data for Subject 16.S16.zipS17 DataSimultaneous EEG-fMRI and MRI data for Subject 17.S17.zipS18 DataSimultaneous EEG-fMRI and MRI data for Subject 18.S18.zipS19 DataSimultaneous EEG-fMRI and MRI data for Subject 19.S19.zipS20 DataSimultaneous EEG-fMRI and MRI data for Subject 20.S20.zipReadmeDataset information.rivalry-eeg-fmri-upload-readme-20170225.pdf