Related Experiment Video
Updated: May 2, 2026
Monocular Visual Deprivation and Ocular Dominance Plasticity Measurement in the Mouse Primary Visual Cortex
Published on: February 8, 2020
Binocular input coincidence mediates critical period plasticity in the mouse primary visual cortex
Xiao-Jing Chen1, Malte J Rasch, Guang Chen
1Institute of Neuroscience and State Key Laboratory of Neuroscience, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, and University of Chinese Academy of Sciences, Shanghai 200031, China, State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing 100875, China, and Center for Collaboration and Innovation in Brain and Learning Sciences, Beijing Normal University, Beijing 100875, China.
Binocular visual inputs become highly correlated during the critical period (CP) for ocular dominance (OD) plasticity in the developing visual cortex. This input coincidence is essential for shaping visual circuits and establishing OD organization.
Area of Science:
- Neuroscience
- Developmental Biology
- Visual System Research
Background:
- Ocular dominance (OD) organization in the primary visual cortex (V1) develops during a critical period (CP) shaped by visual experience.
- Synaptic competition between inputs from the two eyes drives this experience-dependent plasticity.
- The specific property of binocular input driving this plasticity remains unclear.
Purpose of the Study:
- To investigate the role of binocular input properties in mediating OD plasticity during the CP.
- To determine if input coincidence is a key factor in CP plasticity.
Main Methods:
- Whole-cell recordings in mouse V1.
- Pharmacological manipulation (diazepam) to alter GABAergic transmission.
- Optogenetic activation in Thy1-ChR2 mice.
- Computational modeling of feed-forward networks.
Main Results:
- Visually driven inputs from both eyes to V1 binocular cells become highly coincident during the CP.
- Enhancing GABAergic transmission induced precocious input coincidence and OD plasticity.
- Disrupting binocular input coincidence abolished OD plasticity.
- Computational models supported a homeostatic synaptic learning mechanism.
Conclusions:
- High correlation (coincidence) of binocular inputs is a hallmark of the visual cortex CP.
- Input coincidence is a crucial neural substrate for inducing OD plasticity during development.
