Identification of visual pallial telencephalon in the goldfish, Carassius auratus: A combined cytochrome oxidase and electrophysiological study

William Saidel, Kathleen Marquez-Houston, Ann B. Butler

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

A strategy based upon a comparative decrease in bilateral symmetry of cytochrome oxidase (COX) histochemistry following unilateral eye enucleation was used to identify the primary visual area in the area dorsalis of the telencephalon of the goldfish, Carassius auratus. The lateral zone of area dorsalis (Dl) at about the level of the anterior commissure exhibits such a bilateral difference. A parallel decline in the symmetry COX reactivity was observed in the associated part of the central zone (Dc). Electrophysiological activity using extracellular techniques confirmed the visually-driven activity of neurons in these areas. Lesions confirmed the loci in the lateral zone of area dorsalis, including both its dorsal and ventral parts. Single- and multi-unit recordings exhibited a variety of responses to different light stimuli. Single unit latency measures proved not to be a reliable measure of target areas. Responses habituated to stimuli repeated within 5 s and were only reliably evoked with intervals greater than several seconds.

Original languageEnglish (US)
Pages (from-to)82-93
Number of pages12
JournalBrain research
Volume919
Issue number1
DOIs
StatePublished - Nov 16 2001

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)
  • Molecular Biology
  • Developmental Biology
  • Clinical Neurology

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