// Cell parameter file for the reduced model of "cell 945" at 945 um below
// the surface, from Eyal et al. 2016 Fig 1c4.
// RM and Cm values are scaled by a ratio of the model segment area to
// that of same region of the reconstructed cell.
// These were obtained by parsing 2013_03_13_cell06_945_H42_05.CNG.swc
// to identify all terminal and non terminal branch intervals in regions
// at specified distances from the some
*relative
*cartesian
*asymmetric
// membrane constants (SI units) - scaled to give area corrections
*set_global RM 3.10 // ohm*m^2
*set_global RA 2.47 // ohm*m
*set_global CM 0.0061 // farad/m^2
*set_global EREST_ACT -0.082 // volts (leakage potential)
// These include an additional scaling of RM and RA by 0.85 and CM by 1.18
// This gives another 15% increase in area, preserving RM/RA ratio,
// resulting in better fit to 2 msec, 200pA injection pulse.
// Populate soma wih modified traub91 channels
soma none 0 0 19 18.5 \
Na_pyr 3000 \
Kdr_pyr 1600 \
Ca_hip_traub91 100 \
Kahp_pyr 30 \
Ca_conc -7.769e12 \
spike 0.0
*set_compt_param RA 1.24 // use average soma-apical0 Ra
apical0 soma 0 0 66 2.9 GABA_pyr 5.0 // apical trunk
*set_compt_param RA 2.47 // back to default
apical1 apical0 0 0 335 1.8 AMPA_pyr 5.0 // lower apical at 50 - 300 um
// For upper apical divide Rm and multiply CM by 2.08
// Apply additional spine area correction of 1.9
*set_compt_param RM 0.923
*set_compt_param CM 0.0206
apical2 apical1 0 0 267 2.3 GABA_pyr 5.0 // mid apical at 300 - 600 um
apical3 apical2 0 0 84 2.3 // apical tuft non-terminal > 600 um
apical4a apical3 -189 0 189 2.3 // terminal tuft btanches
apical4b apical3 189 0 189 2.3
// For oblique, scale by 3.7
// Apply additional spine area correction of 1.9*0.85
*set_compt_param RM 0.441
*set_compt_param CM 0.0432
oblique1 apical0 -34 0 0 4.9 // AMPA_pyr 2.6526
oblique2a oblique1 -71 0 -71 2.3 GABA_pyr 2.6526
oblique2b oblique1 -71 0 71 2.3 AMPA_pyr 2.6526
// For basal0, scale factor is 2.78 - no spine correction, 0.85,1.18
*set_compt_param RM 1.116
*set_compt_param CM 0.0171
*set_compt_param RA 1.31 // use average soma-basal0 Ra
basal0 soma 0 0 -32 6.0 // GABA_pyr 2.6526
*set_compt_param RA 2.47// back to default
// Apply additional spine area correction of 1.9
// For basal1, scale factor is 5.0 (*0.85)
*set_compt_param RM 0.327
*set_compt_param CM 0.0583
basal1a basal0 -22.0 0 -22.0 3.5
basal1b basal0 22.0 0 -22.0 3.5
// For basal2, scale factor is 3.22*1.9 (*0.85)
*set_compt_param RM 0.507
*set_compt_param CM 0.0375
basal2a basal1a -200 0 0 3.5
basal2b basal1a 0 0 -200 3.5 AMPA_pyr 5.0
basal2c basal1b 0 0 -200 3.5
basal2d basal1b 200 0 0 3.5