ERP signatures of auditory awareness in cross-modal distractor-induced deafness.
Conscious Cogn
; 96: 103241, 2021 11.
Article
em En
| MEDLINE
| ID: mdl-34823076
ABSTRACT
Previous research showed that dual-task processes such as the attentional blink are not always transferable from unimodal to cross-modal settings. This study investigated whether such a transfer can be stated for a distractor-induced impairment of target detection established in vision (distractor-induced blindness, DIB) and recently observed in the auditory modality (distractor-induced deafness, DID). A cross-modal DID effect was confirmed The detection of an auditory target indicated by a visual cue was impaired if multiple auditory distractors preceded the target. Event-related potentials (ERPs) were used to identify psychophysiological correlates of target detection. A frontal negativity about 200 ms succeeded by a sustained, widespread negativity was associated with auditory target awareness. In contrast to unimodal findings, P3 amplitude was not enhanced for hits. The results support the notion that early frontal attentional processes are linked to auditory awareness, whereas the P3 does not seem to be a reliable indicator of target access.
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Base de dados:
MEDLINE
Assunto principal:
Surdez
/
Intermitência na Atenção Visual
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article