title: Does Number of Perceptions or Cross-Modal Auditory Cueing Influence Audiovisual Processing Speed?
abstract: What factors contribute to redundant target processing speed besides statistical facilitation? One possibility is that multiple percepts may drive these effects. Another, although not mutually exclusive hypothesis, is that cross-channel cueing from one modality to another may influence response times. We implemented an auditory-visual detection task using the sound-induced flash illusion to examine whether one or both of these possibilities contributes to changes in processing speed; we did so by examining the data of individual participants. Our results indicated shorter response times in several participants when multiple flashes were perceived in the standard sound-induced flash illusion, thereby replicating previous work in the literature. Additionally, we found evidence for faster responses in several participants when carrying out the same analysis in trials in which 1 beep was presented with 2 real flashes. Overall, our analysis indicates that some observers benefit from cross-modal facilitation, whereas others may benefit from a combination of cross-modal facilitation and increased perceptual judgments.
authors.forename: Nicholas
authors.initials: N
authors.lastname: Altieri
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Wenger
authors.forename: Mark T
authors.initials: MT
authors.lastname: Wallace
authors.forename: Ryan A
authors.initials: RA
authors.lastname: Stevenson
mesh_terms: D000328:Adult; D001307:Auditory Perception / Q000502:physiology*; D003463:Cues; D005260:Female; D006801:Humans; D008297:Male; D011597:Psychomotor Performance / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*; D055815:Young Adult