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Related Concept Videos

Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
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Related Experiment Video

Updated: May 12, 2026

Development of an Audio-based Virtual Gaming Environment to Assist with Navigation Skills in the Blind
09:01

Development of an Audio-based Virtual Gaming Environment to Assist with Navigation Skills in the Blind

Published on: March 27, 2013

Spatial orienting in complex audiovisual environments.

Davide Nardo1, Valerio Santangelo, Emiliano Macaluso

  • 1Neuroimaging Laboratory, Santa Lucia Foundation, Rome, Italy.

Human Brain Mapping
|April 26, 2013
PubMed
Summary
This summary is machine-generated.

This study investigated audiovisual spatial interactions using naturalistic videos. Findings show the posterior parietal cortex integrates visual and auditory spatial information, crucial for effective spatial orienting.

Keywords:
attentionauditoryecologicaleye movementsmultisensoryorientingposterior parietal cortexsaliencyspacevisual

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Related Experiment Videos

Last Updated: May 12, 2026

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Published on: March 27, 2013

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Sensory Processing

Background:

  • Previous research on crossmodal spatial orienting used limited, context-free stimuli.
  • Investigating audiovisual interactions in naturalistic settings is crucial for understanding real-world perception.

Purpose of the Study:

  • To explore audiovisual spatial interactions within naturalistic contexts.
  • To examine how visual and auditory saliency influence spatial orienting.
  • To determine the role of the posterior parietal cortex in multisensory integration.

Main Methods:

  • Combined computational modeling, behavioral measures, and functional magnetic resonance imaging (fMRI).
  • Utilized naturalistic videos with lateralized visual events and co-occurring sounds.
  • Measured eye-movements for spatial orienting efficacy and analyzed brain activity.

Main Results:

  • Visual salience modulated activity in higher-order visual areas.
  • Auditory salience modulated activity in the superior temporal cortex and posterior parietal cortex (for spatially congruent stimuli).
  • Orienting efficacy influenced activity in visual cortex, consistent with visual salience effects.

Conclusions:

  • Sensory cortex activity reflects both stimulus-driven signals and orienting efficacy in complex multisensory environments.
  • The posterior parietal cortex integrates spatial information across visual and auditory modalities.