A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
The influence of feature-based attention and response requirements on ERP correlates of auditory awareness
Tekijät: Filimonov, Dmitri; Krabbe, Andreas; Revonsuo, Antti; Koivisto, Mika
Kustantaja: Oxford University Press
Julkaisuvuosi: 2024
Journal: Neuroscience of Consciousness
Tietokannassa oleva lehden nimi: Neuroscience of consciousness
Lehden akronyymi: Neurosci Conscious
Artikkelin numero: niae031
Vuosikerta: 2024
Numero: 1
eISSN: 2057-2107
DOI: https://doi.org/10.1093/nc/niae031
Verkko-osoite: https://doi.org/10.1093/nc/niae031
Rinnakkaistallenteen osoite: 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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This research has received a grant from Signe and Ane Gyllenbergs Foundation.
