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TraubsHHNeuron Class Reference #include <TraubsHHNeuron.h> Inheritance diagram for TraubsHHNeuron: List of all members. Detailed Description Conductance based spiking neuron using Traubs modified HH model. This model is a modified version of Traub's model of Na/K currents for action potentials in hippocampal pyramidal cells, which was modified from HH equations to fit the kinetics of those neurons; the rate constants correspond to a temperature of 36 deg C The model is based on a CbNeuron and includes the Traubs_HH_K_Channel and Traubs_HH_Na_Channel for action potetial generation. INa = gNa * m^3 * h * (v-ENa) IKd = gKd * n^4 * (v-EK) m' = (m_inf - m) / tau_m h' = (h_inf - h) / tau_h n' = (n_inf - n) / tau_n v2 = v - Vtr alpha_m = 0.32 * (13-v2) / ( exp((13-v2)/4) - 1) beta_m = 0.28 * (v2-40) / ( exp((v2-40)/5) - 1) tau_m = 1 / (alpha_m + beta_m) m_inf = alpha_m / (alpha_m + beta_m) alpha_h = 0.128 * exp((17-v2)/18) beta_h = 4 / ( 1 + exp((40-v2)/5) ) tau_h = 1 / (alpha_h + beta_h) h_inf = alpha_h / (alpha_h + beta_h) alpha_n = 0.032 * (15-v2) / ( exp((15-v2)/5) - 1) beta_n = 0.5 * exp((10-v2)/40) tau_n = 1 / (alpha_n + beta_n) n_inf = alpha_n / (alpha_n + beta_n) HH parameters: gNa = 0.1 S/cm2 gKd = 0.03 S/cm2 ENa = 50 mV EK = -90 mV Vtr = -63 mV (adjusts threshold to around -50 mV) Public Member Functions TraubsHHNeuron (void) Constructor. virtual ~TraubsHHNeuron () Destructor. virtual int init (Advancable *a) Within this function the model has to be built. virtual int updateInternal (void) This function has to call updateInternal of the channels. Private Attributes Traubs_HH_K_Channel * k The K channel. Traubs_HH_Na_Channel * na The Na channel. float Vtr This parameter adjusts the threshold. Friends class csimClassInfoDB Constructor & Destructor Documentation TraubsHHNeuron::TraubsHHNeuron (  void   )    Constructor. We set the default mebrane properties TraubsHHNeuron::~TraubsHHNeuron (  void   )  [virtual]   Destructor. We have to delete the Na and K channel Member Function Documentation int TraubsHHNeuron::init (  Advancable *  a  )  [virtual]   Within this function the model has to be built. Here the Na nd K channel are generated and connected to the neuron itself Reimplemented from csimClass. int TraubsHHNeuron::updateInternal (  void   )  [virtual]   This function has to call updateInternal of the channels. We have to call updateInternal of the Na and K channel Reimplemented from csimClass.

(C) 2003, Thomas Natschläger

last modified 07/10/2006