The effect of extracellular potassium concentration on the oscillation frequency of the pacemaker nucleus in the weakly electric fish Apteronotus leptorhynchus.

• Tác giả: Masashi Kawasaki, Günther K H Zupanc
• Ngôn ngữ: eng
• Ký hiệu phân loại: 363.737 Measures to prevent, protect against, limit effects of pollution
• Thông tin xuất bản: Germany : Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology , 2025
• Bộ sưu tập: NCBI
• ID: 495829

Tóm tắt

The weakly electric brown ghost knifefish (Apteronotus leptorhynchus) exhibits a pronounced sexual dimorphism in its electric behavior-males discharge at higher frequencies than females, with little overlap between the sexes. The frequency of these electric organ discharges is controlled by the frequency of the synchronized oscillations of the medullary pacemaker nucleus. Previous studies have suggested that sex-specific differences in the morphology and gene expression pattern of the astrocytic syncytium that envelopes the pacemaking neural network cause differences in its capacity to buffer the extracellular concentration of K