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Related Experiment Video

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Topographical Estimation of Visual Population Receptive Fields by fMRI

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Neural mechanisms underlying sound-induced visual motion perception: An fMRI study.

Souta Hidaka¹, Satomi Higuchi², Wataru Teramoto³

¹Department of Psychology, Rikkyo University, 1-2-26, Kitano, Niiza-shi, Saitama 352-8558, Japan.

Acta Psychologica

|June 11, 2017

Summary

Sound can create the illusion of visual motion. This study found that auditory-induced visual motion (SIVM) and visually-induced visual apparent motion (VIVM) share brain activity but SIVM also engages auditory areas more, suggesting distinct neural mechanisms.

Keywords:

Audiovisual interaction Human motion processing area Motion perception Sensory association areas Sound-induced visual motion Visual apparent motion

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Published on: May 10, 2012

Area of Science:

Neuroscience
Cognitive Science
Sensory Perception

Background:

Crossmodal interactions in motion perception involve brain areas for motion processing and sensory association.
Sound-induced visual motion (SIVM) is an illusion where sounds trigger perceived motion in static visual stimuli.
Investigating the neural basis of SIVM is crucial for understanding multisensory integration.

Purpose of the Study:

To investigate the brain activity patterns associated with sound-induced visual motion (SIVM).
To compare neural activity in SIVM with visually-induced visual apparent motion (VIVM).
To elucidate the neural mechanisms underlying crossmodal motion perception.

Main Methods:

Utilized 7T functional magnetic resonance imaging (fMRI) to examine brain activity.
Presented participants with SIVM and VIVM stimuli.
Analyzed patterns of neural activation and functional connectivity.

Main Results:

Shared activation in the middle occipital area (V5/hMT) for both SIVM and VIVM.
SIVM showed greater activation in the superior temporal area compared to VIVM.
Enhanced functional connectivity between V5/hMT and auditory/crossmodal motion areas during SIVM.

Conclusions:

Neural mechanisms for SIVM and VIVM are similar yet partially distinct.
Auditory and visual motion processing areas interact closely in SIVM perception.
Findings highlight the intricate interplay of neural signals in crossmodal motion perception.