In this directory the models used for Fig. 4 of the manuscript "NKCC-1 mediated Cl- uptake in immature CA3 pyramidal neurons is sufficient to compensate phasic GABAergic input" by Kolbaev et al. submitted to Scientific Reports To use this model please unpack in folder, and use mknrndll to compile the used .mod files. For the simulation used in Fig. 4B: Start Neuron by clicking Cell_1_SciRep_ShrinkCorr.hoc Load session "Determine_tau_NKCC1_rig.ses" In the cldif_CA3_NKCC1_HCO3 window you can adjust the Values for the NKCC1 mediated Cl- transport. Most relevant are the parameters: tau_NKCC1 - adjust this value to fir the measured Cl- trajectory cli_Start - adjust to the desired Starting Value, 9.1 mM is the exp. determined value For the simulation used in Fig. 4C: Start Neuron by clicking Cell_1_SciRep_ShrinkCorr.hoc Load session "Determine_cl-Flux_w-o_NKCC1_rig.ses" In the cldif_CA3_NKCC1_HCO3 window you can adjust the Values for the NKCC1 mediated Cl- transport. Most relevant are the parameters: tau_NKCC1 - adjusted to 9.9*10(19) i.e. pratically absent tau_passive - adjusted to 9.9*10(19) i.e. pratically absent (note that in this paper we evaluate the Cl- fluxes via the tonic GABA A receptors implemented in Cell1) cli_Start - adjust to the desired starting Value, here 17 mM as this is the steady state of the recordings shown in Fig. 4C For the simulation used in Fig. 4E: Start Neuron by clicking start_Phasic_GABA_activity_only_soma_Backregul.hoc For the simulation used in Fig. 4F: Start Neuron by clicking start_Phasic_GABA_activity_only_soma_Div_gGABA.hoc The different conductances of the phasic currents are sequentially played in the main file "Phasic_GABA_activity_only_soma_Div_gGABA.hoc" and stored in .asc files For the simulation used in Fig. 4G: Start Neuron by clicking start_Phasic_GABA_activity_only_soma_Div_Freq.hoc The different conductances of the phasic currents are sequentially played in the main file "Phasic_GABA_activity_only_soma_Div_gGABA.hoc" and stored in .asc files Start-Frequency and number of frequency staps are defined in line 15 and 16 of the hoc file. For the manuscript thes are set manually by defining Freq-Staps = 1 and Start_Freq to 1,2,5,10,20, and 50 For the simulation used in Fig. 4H: Start Neuron by clicking "start_Block_Tonic_Cl-currents.hoc" For the simulation used in Fig. 4I: Start Neuron by clicking "start_Add_Tonic_Cl-currents.hoc" The amplitude of the added tonic current mut be set in the Valuable Add_Tonic in the second line of the code in "Add_tonic_Cl-current.hoc