models
Table of Contents
Models
Neuron
Leaky-Integrate-and-Fire (LIF)
http://www.cns.nyu.edu/~eorhan/notes/lif-neuron.pdf
Properties:
- MembranePotentialThreshold: threshold of the membrane potential, above which the neuron fire (v_th)
- MembraneLeakTime: leak constant applied to the membrane potential (tau)
- MembraneRefractoryDuration: time during which a neuron is inactive after a fire
- MembraneInhibitionDuration: time during which a neuron is inactive after an incoming inhibition spike
- MembraneThresholdType: type of the threshold. Can be static (constant) or dynamic (adaptive threshold)
- AdaptiveThreshold: potential of the adaptive threshold
- AdaptiveThresholdAdd: value added at each neuron output fire
- AdaptiveThresholdLeak: leak constant applied to the adaptive threshold
Spike Response Model (SRM)
http://icwww.epfl.ch/~gerstner/SPNM/node27.html
Properties:
- MembranePotentialThreshold: threshold of the membrane potential, above which the neuron fire (v_th)
- MembraneRestingPotential: resting potential of the membrane (v_rest)
- MembraneTimeConstant: time constant of the membrane
- SynapseTimeConstant: time constant of the synapses
- MembraneRefractoryDuration: time during which a neuron is inactive after a fire
- MembraneThresholdType: type of the threshold. Can be static (constant) or dynamic (adaptive threshold)
Izhikevich
http://www.izhikevich.org/publications/spikes.htm
Properties:
- MembranePotentialThreshold: threshold of the membrane potential, above which the neuron fire (v_th). default is 30 mv
Synapses
Static
Synapse with fixed weight and delay.
Constructors:
- w (Float): weight of the synapse
- d (Time): post delay of the synapse
Standard STDP
STDP model implemented from:
Synaptic Modifications in Cultured Hippocampal Neurons: Dependence on Spike Timing, Synaptic Strength, and Postsynaptic Cell Type
Guo-qiang Bi and Mu-ming Poo, 1998
Constructors:
- w (Float): weight of the synapse
- d (Time): post delay of the synapse
Simplified STDP
STDP model implemented from: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6033439
Constructors:
- stdpWindow (Time): duration of the LTP window
- w (Float): weight of the synapse
Ternary
Synapse with output reduced states (+1, 0, -1) and internal STDP
Inhibitory
A synaptic model which send inhibitory messages to the post neuron
Constructors:
- delay (Time): post delay of the synapse
models.txt ยท Last modified: by Pierre.Falez@univ-lille1.fr
