Krp (4ap resistant, persistent) current for nucleus accumbens, from nisenbaum et al. (1996), written by j moyer 2004. Kinetics for all channels taken from wolf et al. 2005 (112834), with no modification (identical mod file). Animal model is from experiments in paper. Channel kinetics identical to previous study on rat msns, but original source of kinetics may be different (see ancestor models).