Audio-visual interactions for motion perception in depth modulate activity in visual area V3A.

ABSTRACT: Multisensory signals can enhance the spatial perception of objects and events in the environment. Changes of visual size and auditory intensity provide us with the main cues about motion direction in depth. However, frequency changes in audition and binocular disparity in vision also contribute to the perception of motion in depth. Here, we presented subjects with several combinations of auditory and visual depth-cues to investigate multisensory interactions during processing of motion in depth. The task was to discriminate the direction of auditory motion in depth according to increasing or decreasing intensity. Rising or falling auditory frequency provided an additional within-audition cue that matched or did not match the intensity change (i.e. intensity-frequency (IF) "matched vs. unma

SUBMITTER: Ogawa A 

PROVIDER: S-EPMC3838953 | biostudies-literature | 2013 May

REPOSITORIES: biostudies-literature