K-a channel, from safronov et al. (2000), model no. 62266, with no changes except that gkbar is set to 0. Note: in the paper it says that the ka current was negligible and so not included in the model at all. Experimental results and model, largely from ancestor model. The animal model info here is from experimental methods.
Model has temperature dependence, with original kinetics at 6.3 deg C.