McGurk fusion responses take about 70-80 ms longer than congruent audiovisual responses
Evidence
In both experiments and in all contexts, the processing of “ba” responses was indeed quicker compared to McGurk responses. Two-way repeated-measures ANOVA on target and context type in Exp. A displays an effect of target [70 ms quicker response for “ba” targets, F(1, 20) = 14.25, p < 0.005] and no effect of context or any interaction effect. — Dijk, Pim van, Physiology, Psychoacoustics and…, 5137
Categorization
Category: Causal Relationships
- FICTION: The measurable processing delay for conflicting multisensory input is a concrete timing fact that could ground a sci-fi detail about neural time perception or an AI consciousness that experiences unified perception lagging reality.
Related
- McGurk responses are processed 70-80 ms slower than matching audiovisual targets (similarity 0.93)
- Congruent audiovisual speech is processed faster than McGurk fusion responses (similarity 0.90)
- McGurk (incongruent) targets produce consistently longer response times than congruent ones (similarity 0.89)
- Fused McGurk percepts take longer to process than matching audiovisual syllables (similarity 0.87)
- Binding the visual stream to the less-coherent auditory source shrinks later McGurk fusion (similarity 0.81)
- Seconds of mismatched audiovisual context weaken the McGurk visual bias. (similarity 0.80)
- Brief prior exposure to mismatched audio-visual speech reduces later visual weight in fusion. (similarity 0.80)