tutorials:writing_your_own_plasticity_model
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tutorials:writing_your_own_plasticity_model [2016/08/18 16:51] – [Understanding plasticity in Auryn] zenke | tutorials:writing_your_own_plasticity_model [2018/02/07 23:03] – [Synaptic traces] typo fix zenke | ||
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* Zenke, F., and Gerstner, W. (2014). Limits to high-speed simulations of spiking neural networks using general-purpose computers. Front Neuroinform 8, 76. [[http:// | * Zenke, F., and Gerstner, W. (2014). Limits to high-speed simulations of spiking neural networks using general-purpose computers. Front Neuroinform 8, 76. [[http:// | ||
- | If you can write down a learning rule as a differential equation involving spike trains, synaptic traces and specific postsynaptic quantities, such as the membrane potential, Auryn will bring everything need to so so intuitively. Here is an example from Gerstner and Kistler (2002): | + | If you can write down a learning rule as a differential equation involving spike trains, synaptic traces and specific postsynaptic quantities, such as the membrane potential, Auryn will bring everything |
{{ : | {{ : | ||
- | In Auryn you can implement this type of learning rule very intuitively | + | In Auryn you can implement this type of learning rule if the '' |
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===== Understanding plasticity in Auryn ===== | ===== Understanding plasticity in Auryn ===== | ||
- | In most cases you will want to use Auryn to implement your own synapse model. The easiest to do this is by understanding and modifying an existing model. Most of the plasticity models in Auryn are implemented in source files which contain the acronym STDP, e.g. [[STDPConnection]], | + | In most cases you will want to use Auryn to implement your own synapse model. The easiest to do this is by understanding and modifying an existing model. Most of the plasticity models in Auryn are implemented in source files which contain the acronym STDP, e.g. [[manual:STDPConnection]], |
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The macros '' | The macros '' | ||
- | This declaration should be matched in the '' | + | This declaration should be matched in the '' |
<code c++> | <code c++> | ||
/* Initialization of presynaptic traces */ | /* Initialization of presynaptic traces */ | ||
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tr_post_hom = dst-> | tr_post_hom = dst-> | ||
</ | </ | ||
- | which initializes the traces using their respective | + | which initializes the traces using their respective |
- | + | ||
- | The current value of a trace can then be accessed in the code via '' | + | |
==== Weight updates at spiking events (propagate) ==== | ==== Weight updates at spiking events (propagate) ==== | ||
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===== Changing the plasticity model ===== | ===== Changing the plasticity model ===== | ||
- | Suppose, you would like to change the plasticity model, all you need to do is to copy TripletConnection.h and TripletConnection.cpp to YourNameConnection.h and .cpp and then the '' | + | Most of the plasticity models in Auryn follow the design principles introduced above (e.g. http:// |
tutorials/writing_your_own_plasticity_model.txt · Last modified: 2018/02/07 23:11 by zenke