135.0 21 Cerebellar Low-threshold potassium channels and a low-threshold calcium channel regulate Ca2+ spike firing in the dendrites of cerebellar Purkinje neurons: a modeling study. Brain Res., 2001, 891, 106-15 2.6/(1+exp((v+7)/-8)) 0.18/(1+exp((v+26)/4)) 0.0025/(1+exp((v+32)/8)) 0.19/(1+exp((v+42)/-10))