Electroanatomy of a unique amacrine cell in the rabbit retina

R. F. Miller, S. A. Bloomfield

Research output: Contribution to journalArticle

88 Scopus citations

Abstract

Intracellular electrophysiological recordings were obtained from a specialized class of 'starburst' amacrine cells by using an isolated superperfused retina-eyecup preparation of the rabbit. These cells were injected intracellularly with horseradish peroxidase and identified with light microscopy. A computer-controlled image-processing system was used to map and display the three-dimensional dendritic organization and provide information on length and sublaminar distribution of dendritic processes. Starburst amacrines show an unusual dendritic architecture that includes thin intermediate dendritic segments. Analysis with steady-state cable equations suggests that these thin segments may provide electrical isolation of distal processes, raising the possibility that a single dendrite, which lies beyond the thin segment, may constitute a functional subunit of the cell.

Original languageEnglish (US)
Pages (from-to)3069-3073
Number of pages5
JournalProceedings of the National Academy of Sciences of the United States of America
Volume80
Issue number10 I
DOIs
StatePublished - 1983

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