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Visual Neuroscience Visual Neuroscience

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Current source-density analysis of light-evoked field potentials in rabbit retina

Published online by Cambridge University Press:  01 March 1999

CHESTER J. KARWOSKI  and
XIJING XU
CHESTER J. KARWOSKI
Affiliation:
Vision Research Laboratory, Department of Psychology, University of Georgia, Athens
XIJING XU
Affiliation:
Vision Research Laboratory, Department of Psychology, University of Georgia, Athens
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Abstract

The technique of current source-density analysis was applied to several components of the light-evoked field potentials (electroretinogram) from the retina of the superfused eyecup of rabbit. The depth distributions of the major current sources and sinks were: b-wave—sink at outer plexiform layer, source at inner plexiform layer; M-wave—sink at inner plexiform layer, source at retinal surface; and slow PIII—source near outer plexiform layer, sink at retinal surface. These distributions, along with the sensitivities of these responses to certain pharmacological agents, support earlier studies that Müller cells generate the M-wave and slow PIII, but that depolarizing bipolar cells directly generate the b-wave.

Keywords

RetinaElectroretinogramCurrent source densityMüller cell
Type
Research Article
Information
Visual Neuroscience , Volume 16 , Issue 2 , March 1999 , pp. 369 - 377
Copyright
1999 Cambridge University Press

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