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Monocular Visual Deprivation and Ocular Dominance Plasticity Measurement in the Mouse Primary Visual Cortex
Published on: February 8, 2020
The McCollough effect reflects permanent and transient adaptation in early visual cortex
Edward Vul1, Erin Krizay, Donald I A MacLeod
1Department of Brain and Cognitive Sciences, MIT, Cambridge, MA, USA. evul@mit.edu
Journal of Vision
|October 4, 2008
Summary
The brain
Area of Science:
- Neuroscience
- Computational Neuroscience
- Visual Neuroscience
Background:
- Brain processing involves inputs with diverse time courses.
- Models of learning and adaptation often propose multiple timescales.
- Isolating distinct timescales of cortical adaptation in vivo remains challenging.
Purpose of the Study:
- To investigate and isolate different timescales of adaptation in the early visual cortex.
- To determine if adaptation occurs at multiple, separable temporal scales.
- To characterize the properties of these distinct timescales.
Main Methods:
- Experimental manipulation of visual input.
- Behavioral experiments in animals.
- Analysis of neural adaptation patterns.
Main Results:
- Early visual cortex exhibits two separable timescales of adaptation: a fast, saturating timescale (approx. 30s) and an infinite timescale (perfect integrator).
- These two timescales sum linearly.
- The fast and infinite timescales appear to operate independently and in parallel.
Conclusions:
- Cortical adaptation operates at at least two distinct timescales.
- These timescales are separable and function in parallel.
- Findings support models incorporating multiple temporal processing mechanisms in the brain.
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