load_file("nrngui.hoc") create soma access soma load_file("init.ses") load_file("cellinit.hoc") concentration_init() finitialize(v_init) tstop = 2000 screen_update_invl = 0.5 cvode_active(1) atol_ = 1e-6 cvode.atol(atol_) load_file("fig6.hoc")