Abstract
Zebrafish is a lower vertebrate model organism that facilitates integrative analysis of the in vivo effects of potassium and other ion channel mutations at the molecular, cellular, developmental, circuit, systems, and behavioral levels of analysis. Here, we describe a method for extracellular, loose patch electrophysiological recording of electrical activity in cerebellar Purkinje cells in living, awake zebrafish, with the goal of investigating pathological mechanisms underlying channelopathies or other diseases that disrupt cerebellar function. Purkinje cell excitability and a functional cerebellar circuit develop rapidly in zebrafish and show strong conservation with the mammalian cerebellum.
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