Related Experiment Video

Updated: Jul 20, 2025

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
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Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

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Early Visual Deprivation Impairs Functional Development of the Visual Ventral Stream

Yifan Xiang1, Jingwen Yang2,3, Leyan Gao2

  • 1State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Vision Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China.

Investigative Ophthalmology & Visual Science
|August 1, 2023
PubMed

Insights

Children with early visual deprivation (VD) show altered neural processing after cataract removal. Their visual cortex and ventral stream have lower activation, with frontal areas compensating, impacting visual recovery.

Area of Science:

  • Neuroscience
  • Developmental Neuroscience
  • Visual Processing

Background:

  • Early visual deprivation (VD) can impact neural network development.
  • Understanding real-time visual processing alterations post-VD is crucial for effective interventions.

Purpose of the Study:

  • To investigate dynamic changes in neural networks during real-time visual processing after early binocular VD removal.
  • To compare visual processing in children with a history of VD to typically developing (TD) children.

Main Methods:

  • Prospective cross-sectional study involving 20 children with early VD and 20 TD children.
  • High-density electroencephalography (EEG) to record event-related potentials (ERPs).
  • Analysis of ERP components (P1, N170, P2) across object, face, and character stimuli, using source localization and alpha power analysis.

Main Results:

  • Children with VD exhibited significantly lower P1 amplitudes in the left occipito-temporal region compared to TD children.
  • Source mapping revealed reduced activation in the visual cortex and ventral stream in the VD group.
  • Frontal areas showed increased participation for functional compensation in the VD group, with significant alpha desynchronization during object recognition.

Conclusions:

  • Early binocular VD removal leads to distinct alterations in visual network dynamics.
  • Findings suggest a basis for poorer visual recovery and offer insights for developing visual rehabilitation strategies.
Abstract

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