A1 Refereed original research article in a scientific journal
The influence of feature-based attention and response requirements on ERP correlates of auditory awareness
Authors: Filimonov, Dmitri; Krabbe, Andreas; Revonsuo, Antti; Koivisto, Mika
Publisher: Oxford University Press
Publication year: 2024
Journal: Neuroscience of Consciousness
Journal name in source: Neuroscience of consciousness
Journal acronym: Neurosci Conscious
Article number: niae031
Volume: 2024
Issue: 1
eISSN: 2057-2107
DOI: https://doi.org/10.1093/nc/niae031
Web address : https://doi.org/10.1093/nc/niae031
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/457310908
In search for the neural correlates of consciousness (NCCs), it is important to isolate the true NCCs from their prerequisites, consequences, and co-occurring processes. To date, little is known about how attention affects the event-related potential (ERP) correlates of auditory awareness and there is contradictory evidence on whether one of them, the late positivity (LP), is affected by response requirements. By implementing a GO-NOGO design with target and nontarget stimuli, we controlled for feature-based attention and response requirements in the same experiment, while participants rated their awareness using a perceptual awareness scale. The results showed a prolonged auditory awareness negativity (AAN) for aware trials, which was influenced neither by attention nor by response requirement. The LP was affected by both attention and response requirements. Consistent with the levels of processing hypothesis, the LP was related to consciousness as a correlate of the processing of higher-level stimulus features, likely requiring access to a "global workspace." Our findings further suggest that AAN is a proper ERP correlate of auditory consciousness and thus a true NCC in the auditory modality.
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Funding information in the publication:
This research has received a grant from Signe and Ane Gyllenbergs Foundation.
