Hh channel that includes both a sodium and delayed rectifier channel and accounts for sodium conductance attenuation. B mel - modified hh conductances after ojvind et al.; t brannon-added attenuation; y poirazi-modified kdr and na threshold and time constants to be more stable. Updated by m markaki 2003. According to paper, this was taken from poirazi et al. (2003), model no. 20212, with various differences between the mod files. This is strictly modeling, with the model taken from a previous paper. Animal model is from ancestry, and is listed as adult because this is a model of an aged pyramidal cell.