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Vis Neurosci. 1999 Mar-Apr;16(2):369-77.

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

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Department of Psychology, University of Georgia, Athens 30602, USA.


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.

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