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Related Experiment Video

Updated: Oct 19, 2025

Exploring Infant Sensitivity to Visual Language using Eye Tracking and the Preferential Looking Paradigm
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Multisensory spatial perception in visually impaired infants.

Monica Gori1, Claudio Campus1, Sabrina Signorini2

  • 1Unit for Visually Impaired People, Istituto Italiano di Technologia, 16152 Genova, Italy.

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|September 23, 2021
PubMed
Summary
This summary is machine-generated.

Congenitally blind infants show differences in multisensory spatial perception, with less integration of sound and touch. This suggests potential for early rehabilitation to improve spatial understanding in visually impaired infants.

Keywords:
auditory localizationauditory perceptionblindnessbody representationmultisensory developmentperceptual developmentspatial perceptionspatial representationtouchvisual experience

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Area of Science:

  • Developmental Psychology
  • Neuroscience
  • Sensory Integration

Background:

  • Vision significantly influences early multisensory spatial development.
  • Visual impairment may lead to spatial perception difficulties in infants.
  • Understanding how intact senses develop spatial perception in visually impaired infants is crucial.

Purpose of the Study:

  • To investigate spatial perception in congenitally blind infants compared to sighted infants.
  • To examine the role of auditory and tactile stimuli in multisensory integration.
  • To identify potential differences in how visually impaired infants process spatial information.

Main Methods:

  • Comparison of sighted (S) and severely visually impaired (SVI) infants' responses.
  • Presentation of auditory and tactile stimuli on infants' hands.
  • Analysis of response direction, latency, and audiotactile integration.

Main Results:

  • No significant differences in auditory-only stimulus responses.
  • Visually impaired infants showed attenuated audiotactile spatial integration.
  • SVI infants prioritized tactile over auditory cues in conflict and had limited external body layout influence.

Conclusions:

  • Early postnatal visual deprivation results in a distinct multisensory spatial perception phenotype.
  • Audiotactile integration exists in visually impaired infants, though to a lesser extent.
  • Findings support the potential for early multisensory rehabilitation interventions.