Hh channel that includes both a sodium and a delayed rectifier channel and accounts for sodium conductance attenuation. Modified by b mel, t brannon and y poirazi (2000) for various things. Used in dendrites. Taken from poirazi et al. (2003), model no. 20212, with some changes in implementation but no apparent modification to kinetics or parameters. [this file is from the main directory of model] modeling study, identical to ancestor model save the addition of schaffer collateral spines to dendrites. Experimental results from calcium imaging. Animal model reflects the calcium imaging data. The model was also implemented in two new ca1 pn morphologies but their origin is not clear.