Weakly Electric Fish as Model Systems for Studying Long-Term Steroid Action on Neural Circuits
作者:
Harold Zakon,
期刊:
Brain, Behavior and Evolution
(Karger Available online 1993)
卷期:
Volume 42,
issue 4-5
页码: 242-251
ISSN:0006-8977
年代: 1993
DOI:10.1159/000114158
出版商: S. Karger AG
关键词: Electric organ discharge;Testosterone;Estrogen;Na+current
数据来源: Karger
摘要:
Weakly electric fish generate electric organ discharges (EODs) that are species-specific and often sexually-dimorphic. The waveform or frequency of an EOD can be altered by treating a fish with sex steroid hormones. The EOD is controlled by a few discrete nuclei in the brainstem and spinal cord and a muscle-derived electric organ. The organizational simplicity and steroid-sensitivity of the electromotor system make it a premier system for investigating how sex steroids modulate behavior, neural circuitry, and ion channels. In addition, the diversity of EOD patterns in the many species of electric fish provide a wealth of material in which to examine the evolution of sexual dimorphisms in the nervous system.
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