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Related Experiment Video

Updated: Nov 8, 2025

Controlled Rotation of Human Observers in a Virtual Reality Environment

Controlled Rotation of Human Observers in a Virtual Reality Environment

Published on: April 21, 2022

Auditory cues facilitate object movement processing in human extrastriate visual cortex during simulated self-motion:

Lucia M Vaina¹, Finnegan J Calabro², Abhisek Samal³

¹Brain and Vision Research Laboratory, Department of Biomedical Engineering, Boston University, Boston, MA, USA; Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA, USA; Harvard Medical School-Department of Neurology, Massachusetts General Hospital and Brigham and Women's Hospital, MA, USA.

|April 21, 2021

Summary

This summary is machine-generated.

Auditory motion cues enhance visual object motion perception during self-motion. This crossmodal influence improves motion detection accuracy in the human extrastriate visual cortex, particularly in the hMT+ area.

Keywords:

Auditory Crossmodal Magnetoencephalography Motion processing Multisensory Object motion Optic flow Self-motion Visual

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Area of Science:

Neuroscience
Cognitive Science
Visual Perception

Background:

Segregating moving objects during self-motion is computationally challenging.
Auditory cues can improve visual motion perception, but underlying neural mechanisms are unclear.

Purpose of the Study:

To investigate how auditory motion cues facilitate visual motion detection during self-motion.
To identify brain mechanisms and visual processing stages involved in crossmodal motion perception.

Main Methods:

Used multivariate pattern analysis (MVPA) on MRI-informed magnetoencephalography (MEG) source estimates.
Participants identified target object motion (forward/backward) in a simulated self-motion visual scene.
Recorded brain activity using MEG during visual and auditory cue presentation.

Main Results:

Auditory cues improved behavioral accuracy in localizing the target object.
MEG source activity in visual areas V2 and hMT+ was significantly modulated by auditory cues.
MVPA decoding accuracy of target movement direction from hMT+ activity increased with auditory cues.

Conclusions:

Crossmodal auditory cues facilitate parsing object motion from self-motion-induced optic flow.
This facilitation occurs in the human extrastriate visual cortex, specifically involving hMT+.
Suggests crossmodal influences from the auditory system modulate visual motion processing.