A1 Refereed original research article in a scientific journal
Modality-specific and modality-general electrophysiological correlates of visual and auditory awareness: Evidence from a bimodal ERP experiment
Authors: Filimonov Dmitri, Railo Henry, Revonsuo Antti, Koivisto Mika
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Publication year: 2022
Journal: Neuropsychologia
Journal name in source: NEUROPSYCHOLOGIA
Journal acronym: NEUROPSYCHOLOGIA
Article number: 108154
Volume: 166
Number of pages: 10
ISSN: 0028-3932
eISSN: 1873-3514
DOI: https://doi.org/10.1016/j.neuropsychologia.2022.108154
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/174832717
To date, most studies on the event-related potential (ERP) correlates of conscious perception have examined a single perceptual modality. We compared electrophysiological correlates of visual and auditory awareness in the same experiment to test whether there are modality-specific and modality-general correlates of conscious perception. We used near threshold stimulation and analyzed event-related potentials in response to aware and unaware trials in visual, auditory and bimodal conditions. The results showed modality-specific negative amplitude correlates of conscious perception between 200 and 300 ms after stimulus onset. A combination of these auditory and visual awareness negativities was observed in the bimodal condition. A later positive amplitude difference, whose early part was modality-specific, possibly reflecting access to global workspace, and later part shared modality-general features, possibly indicating higher level cognitive processing involving the decision making, was also observed.
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