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Lag normalization in an electrically coupled neural network
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Journal Article
Lag normalization in an electrically coupled neural network
2013
Overview
In this study, the authors show that velocity-dependent lag normalization in the retina is accomplished via a subset of adjacent directionally selective ganglion cells that are electrically coupled, allowing each activated cell to prime its neighbor.
Moving objects can cover large distances while they are processed by the eye, usually resulting in a spatially lagged retinal response. We identified a network of electrically coupled motion–coding neurons in mouse retina that act collectively to register the leading edges of moving objects at a nearly constant spatial location, regardless of their velocity. These results reveal a previously unknown neurophysiological substrate for lag normalization in the visual system.
Publisher
Nature Publishing Group US,Nature Publishing Group
Subject
/ Action Potentials - drug effects
/ Action Potentials - physiology
/ Animal Genetics and Genomics
/ Animals
/ Excitatory Postsynaptic Potentials - drug effects
/ Excitatory Postsynaptic Potentials - physiology
/ Eye
/ Gap Junctions - drug effects
/ Glycyrrhetinic Acid - pharmacology
/ Green Fluorescent Proteins - genetics
/ Green Fluorescent Proteins - metabolism
/ Homeodomain Proteins - genetics
/ Mice
/ Motion Perception - physiology
/ Retina
/ Skewness
/ Space Perception - physiology
/ Transcription Factors - genetics
/ Velocity
