Slowly activating potassium current (m-current), from yamada et al (1989). Ancestry is unclear, no apparent ancestors. This is from a tutorial, not much is explained about the model. The animal model here is from huguenard and mccormick (1992), and most kinetics are from there as well.
Model has temperature dependence, default at 23.5 deg C, and q10 set to 3.