Auditory modulation of visual apparent motion with short spatial and temporal intervals.

TitleAuditory modulation of visual apparent motion with short spatial and temporal intervals.
Publication TypeJournal Article
Year of Publication2010
AuthorsKafaligonul H, Stoner GR
JournalJ Vis
Date Published2010
KeywordsAcoustic Stimulation, Auditory Perception, Humans, Motion Perception, Photic Stimulation, Temporal Lobe, Time Perception, Visual Cortex

Recently, E. Freeman and J. Driver (2008) reported a cross-modal temporal interaction in which brief sounds drive the perceived direction of visual apparent-motion, an effect they attributed to "temporal capture" of the visual stimuli by the sounds (S. Morein-Zamir, S. Soto-Faraco, & A. Kingstone, 2003). Freeman and Driver used "long-range" visual motion stimuli, which travel over long spatial and temporal intervals and engage high-order cortical areas (K. G. Claeys, D. T. Lindsey, E. De Schutter, & G. A. Orban, 2003; Y. Zhuo et al., 2003). We asked whether Freeman and Driver's temporal effects extended to the short-range apparent-motion stimuli that engage cortical area MT, a lower-order area with well-established spatiotemporal selectivity for visual motion (e.g. A. Mikami, 1991, 1992; A. Mikami, W. T. Newsome, & R. H. Wurtz, 1986a, 1986b; W. T. Newsome, A. Mikami, & R. H. Wurtz, 1986). Consistent with a temporal-capture account, we found that static sounds bias the perception of both the direction (Experiment 1) and the speed (Experiment 2) of short-range motion. Our results suggest that auditory timing may interact with visual spatiotemporal processing as early as cortical area MT. Examination of the neuronal responses of this well-studied area to the stimuli used in this study would provide a test and might provide insight into the neuronal representation of time.

Alternate JournalJ Vis
PubMed ID21047763
PubMed Central IDPMC3144727
Grant ListR01 EY012872-10 / EY / NEI NIH HHS / United States
IRG Funded