Command: hh_psc_alpha

Name:
hh_psc_alpha - Hodgkin Huxley neuron model.
Description:
hh_psc_alpha is an implementation of a spiking neuron using the Hodkin-Huxley formalism. (1) Post-syaptic currents Incoming spike events induce a post-synaptic change of current modelled by an alpha function. The alpha function is normalised such that an event of weight 1.0 results in a peak current of 1 pA. (2) Spike Detection Spike detection is done by a combined threshold-and-local-maximum search: if there is a local maximum above a certain threshold of the membrane potential, it is considered a spike.
Parameters:
The following parameters can be set in the status dictionary. V_m double - Membrane potential in mV E_L double - Resting membrane potential in mV. g_L double - Leak conductance in nS. C_m double - Capacity of the membrane in pF. tau_ex double - Rise time of the excitatory synaptic alpha function in ms. tau_in double - Rise time of the inhibitory synaptic alpha function in ms. E_Na double - Sodium reversal potential in mV. g_Na double - Sodium peak conductance in nS. E_K double - Potassium reversal potential in mV. g_K double - Potassium peak conductance in nS. Act_m double - Activation variable m Act_h double - Activation variable h Inact_n double - Inactivation variable n I_e double - Constant external input current in pA. Problems/Todo: better spike detection initial wavelet/spike at simulation onset
References:
Spiking Neuron Models: Single Neurons, Populations, Plasticity Wulfram Gerstner, Werner Kistler, Cambridge University Press Theoretical Neuroscience: Computational and Mathematical Modeling of Neural Systems Peter Dayan, L. F. Abbott, MIT Press (parameters taken from here) Hodgkin, A. L. and Huxley, A. F., A Quantitative Description of Membrane Current and Its Application to Conduction and Excitation in Nerve, Journal of Physiology, 117, 500-544 (1952)
Sends:
SpikeEvent
Receives:
SpikeEvent, CurrentEvent, DataLoggingRequest Authors: Schrader
SeeAlso: hh_cond_exp_traub

Source:
/home/abuild/rpmbuild/BUILD/nest-2.4.1/models/hh_psc_alpha.h

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Name:	hh_psc_alpha - Hodgkin Huxley neuron model.
Description:	hh_psc_alpha is an implementation of a spiking neuron using the Hodkin-Huxley formalism. (1) Post-syaptic currents Incoming spike events induce a post-synaptic change of current modelled by an alpha function. The alpha function is normalised such that an event of weight 1.0 results in a peak current of 1 pA. (2) Spike Detection Spike detection is done by a combined threshold-and-local-maximum search: if there is a local maximum above a certain threshold of the membrane potential, it is considered a spike.
Parameters:	The following parameters can be set in the status dictionary. V_m double - Membrane potential in mV E_L double - Resting membrane potential in mV. g_L double - Leak conductance in nS. C_m double - Capacity of the membrane in pF. tau_ex double - Rise time of the excitatory synaptic alpha function in ms. tau_in double - Rise time of the inhibitory synaptic alpha function in ms. E_Na double - Sodium reversal potential in mV. g_Na double - Sodium peak conductance in nS. E_K double - Potassium reversal potential in mV. g_K double - Potassium peak conductance in nS. Act_m double - Activation variable m Act_h double - Activation variable h Inact_n double - Inactivation variable n I_e double - Constant external input current in pA. Problems/Todo: better spike detection initial wavelet/spike at simulation onset
References:	Spiking Neuron Models: Single Neurons, Populations, Plasticity Wulfram Gerstner, Werner Kistler, Cambridge University Press Theoretical Neuroscience: Computational and Mathematical Modeling of Neural Systems Peter Dayan, L. F. Abbott, MIT Press (parameters taken from here) Hodgkin, A. L. and Huxley, A. F., A Quantitative Description of Membrane Current and Its Application to Conduction and Excitation in Nerve, Journal of Physiology, 117, 500-544 (1952)
Sends:	SpikeEvent
Receives:	SpikeEvent, CurrentEvent, DataLoggingRequest Authors: Schrader
SeeAlso:	`hh_cond_exp_traub`
Source:	/home/abuild/rpmbuild/BUILD/nest-2.4.1/models/hh_psc_alpha.h