Abstract
Abstract Motor nerve excitability testing in the median nerve with QtracS program (©Professor H. Bostock, UCL) was compared between 15 spinocerebellar ataxia type 6 (SCA6) patients and 22 age-matched healthy controls. Motor nerve excitability testing in tail nerve of 2 male mice was compared between before and after intraperitoneal injection of ω -agatoxin-IVA. Compared with normal controls, SCA6 showed statistically significant decrease of depolarizing threshold electrotonus (p ω -agatoxin-IVA. The present study indicates that motor nerves of SCA6 increase slow potassium currents derived from dysfunction of mutant protein, P/Q type voltage gated calcium channels.
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