K-d current, transient, like k-a it is semsitive to 4-ap. Equations from borg-graham (1998). Implemented by m. Lazarewicz 2001. Kinetics from borg-graham (1998). No modeldb ancestors. Strictly a modeling study, in which the ancestor ca1 model is adapted to a ca3 morphology. The animal model info below is from the morphology used here, from ishizuka et al. (1990).