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Related Concept Videos

Visual Agnosia01:12

Visual Agnosia

Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round end"...
Blind Procedures02:07

Blind Procedures

Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which child was...
Auditory Pathway01:15

Auditory Pathway

Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...

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Related Experiment Video

Updated: May 29, 2026

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss
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A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

Published on: April 11, 2025

Cross auditory-spatial learning in early-blind individuals.

Chetwyn C H Chan1, Alex W K Wong, Kin-Hung Ting

  • 1Applied Cognitive Neuroscience Laboratory, Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong, China. Chetwyn.Chan@inet.polyu.edu.hk

Human Brain Mapping
|September 21, 2011
PubMed
Summary
This summary is machine-generated.

Early-blind individuals develop unique brain networks for cross auditory-spatial learning, involving the inferior parietal cortex and hippocampus. This functional adaptation enhances sound-to-distance judgment through neural integration.

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

Last Updated: May 29, 2026

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss
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A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

Published on: April 11, 2025

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Published on: March 27, 2013

Area of Science:

  • Neuroscience
  • Sensory processing
  • Human behavior

Background:

  • Cross-modal processing integrates sensory information for complex actions.
  • Early blindness necessitates alternative sensory strategies for spatial awareness.

Purpose of the Study:

  • Investigate neural mechanisms of cross auditory-spatial learning in early-blind individuals.
  • Identify brain regions involved in associating auditory cues with spatial distances.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used to capture brain activity.
  • Early-blind participants underwent 4 weeks of training in a sound-to-distance judgment task.
  • Blood-oxygenation-level-dependent (BOLD) responses were analyzed at baseline and post-training.

Main Results:

  • Whole-brain analysis revealed auditory discrimination and spatial localization engagement.
  • The inferior parietal cortex and hippocampus mediated the learning process, integrating auditory features with distances.
  • The right cuneus formed an occipital-enhanced network for this learning.

Conclusions:

  • Cross auditory-spatial learning in early blindness involves specific neural pathways distinct from sighted individuals.
  • The inferior parietal cortex and hippocampus are crucial for binding auditory information to spatial representations.
  • An occipital-enhanced network, including the right cuneus, supports this unique functional adaptation.