Computation of motion direction by quail retinal ganglion cells that have a nonconcentric receptive field.

Abstract:

:One type of retinal ganglion cells prefers object motion in a particular direction. Neuronal mechanisms for the computation of motion direction are still unknown. We quantitatively mapped excitatory and inhibitory regions of receptive fields for directionally selective retinal ganglion cells in the Japanese quail, and found that the inhibitory regions are displaced about 1-3 deg toward the side where the null sweep starts, relative to the excitatory regions. Directional selectivity thus results from delayed transient suppression exerted by the nonconcentrically arranged inhibitory regions, and not by local directional inhibition as hypothesized by Barlow and Levick (1965).

journal_name

Vis Neurosci

journal_title

Visual neuroscience

authors

Uchiyama H,Kanaya T,Sonohata S

doi

10.1017/s0952523800172086

subject

Has Abstract

pub_date

2000-03-01 00:00:00

pages

263-71

issue

2

eissn

0952-5238

issn

1469-8714

pii

S0952523800172086

journal_volume

17

pub_type

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