;; Cerebellar Purkinje Cell: resurgent Na current and high frequency
;; firing (Khaliq et al 2003).
;;
;; This variant omits the membrane capacitance definition.
;;

(nemo-model Khaliq03

  ((input v 
	  (ica from ion-currents))

   (const ca0 = 1e-4)


   (component (type decaying-pool) (name ca)
 	      (const  F = 96485.0)
 	      (const  ca_depth   = 0.1)
 	      (const  ca_beta    = 1.0)
	      
	      (d (ca) =  ((neg (ica) / (2 * ca0 * F * ca_depth)) -
 			  ((if (ca < ca0) then ca0 else ca) * ca_beta))
	      	      	 (initial ca0))

              (cac = (if (ca < ca0) then ca0 else ca))

  	      (output cac)
 	      )


))