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Monocular Visual Deprivation and Ocular Dominance Plasticity Measurement in the Mouse Primary Visual Cortex

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Published on: February 8, 2020

The maximum range and timing of excitatory contextual modulation in monkey primary visual cortex.

D M Alexander¹, J J Wright

¹Faculty of Information Technology, University of Technology, Sydney, Australia. dalex@it.uts.edu.au

Visual Neuroscience

|October 6, 2006

Summary

Excitatory contextual modulation in the visual cortex (V1) spans 10-30 mm and occurs 40-250 ms post-stimulus. This suggests global visual information propagation to V1 neurons is possible.

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Area of Science:

Neuroscience
Visual Processing
Computational Neuroscience

Background:

Contextual modulation influences receptive field properties in the visual cortex (V1).
Previous studies explored various stimulus paradigms for understanding these modulations.

Purpose of the Study:

To survey and quantify excitatory contextual modulation in V1.
To determine the spatial and temporal scales of these interactions.
To propose further experiments for validation.

Main Methods:

Empirical survey of existing excitatory contextual modulation data in V1.
Analysis of interaction distances and timing post-stimulus delivery.

Main Results:

Maximum spatial scale of V1 excitatory contextual modulation is 10-30 mm.
Temporal window for these modulations is 40-250 ms after stimulus onset.
These scales allow for global visual information propagation.

Conclusions:

Excitatory contextual modulation in V1 operates over significant spatial and temporal scales.
The identified scales support mechanisms for global visual information integration in V1.
Further experimental validation is warranted.