/* hh_coba.sli Copyright (C) 2004 The NEST Initiative This file is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This file is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */ /* Benchmark 3 of the simulator review The SLI code in this file creates a sparsely coupled network of excitatory and inhibitory neurons which exhibits self-sustained activity after an initial stimulus. Connections within and across both populations are created at random. Both neuron populations receive Poissonian background input. The spike output of 500 neurons from each population are recorded. Neurons are modeled as Hodgkin-Huxley neurons with conductance based synapses (exponential functions). The model is based on T.P. Vogels & L.F. Abbott Signal Propagation and Logic Gating in Networks of Integrate-and-Fire Neurons Journal of Neuroscience, 2005, vol 25, pp 10786-10795. Marc-Oliver Gewaltig, Abigail Morrison, Tobias Potjans */ %%% PARAMETER SECTION %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % define all relevant parameters: changes should be made here % all data is place in the userdict dictionary % A dictionary is a list of name value pairs, enclosed in << and >> % Here we use dictionaries to encapsulate the parameters for the different % benchmarks /hh_coba_params << /model /hh_cond_exp_traub % the neuron model to use /model_params << /g_Na 20000.0 nS % Sodium conductance [nS] /g_K 6000.0 nS % K Conductance [nS] /g_L 10.0 nS % Leak Conductance [nS] /C_m 200.0 pF % Membrane Capacitance [pF] /E_Na 50.0 mV % reversal potential (Sodium) [mV] /E_K -90.0 mV % reversal potential (Potassium) [mV] /E_L -60.0 mV % Resting Potential [mV] /E_ex 0.0 mV % Excitatory reversal potential (mV) /E_in -80.0 mV % Inhibitory reversal potential (Potassium) [mV] /tau_syn_ex 5.0 ms % Excitatory synaptic time constant [ms] /tau_syn_in 10.0 ms % Inhibitory synaptic time constant [ms] >> /delay 0.1 ms % synaptic delay, all connections [ms] % synaptic strengths, here peak conductance /E_synapse_params << /weight 6.0 nS % excitatory synaptic conductance >> /I_synapse_params << /weight -67.0 nS % inhibitory synaptic conductance >> /stimulus /poisson_generator /stimulus_params << /rate 300.0 Hz % rate of inital poisson stimulus /start 1.0 ms % start of Poisson_generator [ms] /stop 51.0 ms % stop of Poisson_generator [ms] /origin 0.0 ms % origin of time, to calculate start_time [ms] >> /detector /spike_detector /detector_params << /withtime true /withgid true /to_file true /label (hh_coba) >> % number of neurons per population to record from /Nrec 500 %number of neurons to stimulate /Nstim 50 /simtime 1000.0 ms % simulated time /dt 0.1 ms % simulation step /NE 3200 % number of excitatory neurons /NI 800 % number of inhibitory neurons /epsilon 0.02 % Connection probability /virtual_processes 1 % number of virtual processes to use >> def hh_coba_params using % here we activate the definitions in the dictionary /parameters_set true def statusdict/argv :: size 1 gt { 1 get dirname (/) join } { () } ifelse (benchmark.sli) join run