Neural Correlates of Modality-Sensitive Deviance Detection in the Audiovisual Oddball Paradigm.

ABSTRACT: The McGurk effect, an incongruent pairing of visual /ga/-acoustic /ba/, creates a fusion illusion /da/ and is the cornerstone of research in audiovisual speech perception. Combination illusions occur given reversal of the input modalities-auditory /ga/-visual /ba/, and percept /bga/. A robust literature shows that fusion illusions in an oddball paradigm evoke a mismatch negativity (MMN) in the auditory cortex, in absence of changes to acoustic stimuli. We compared fusion and combination illusions in a passive oddball paradigm to further examine the influence of visual and auditory aspects of incongruent speech stimuli on the audiovisual MMN. Participants viewed videos under two audiovisual illusion conditions: fusion with visual aspect of the stimulus changing, and combination with auditor

SUBMITTER: Randazzo M 

PROVIDER: S-EPMC7348766 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature