Update documentation for iaf_psc_exp
#3084
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jessica-mitchell
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T: Enhancement
heplesser
changed the title
iaf_psc_expiaf_psc_exp
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@ackurth This looks quite good already, but see my inline comments. I would also like to ask for a slight re-ordering of material that you have not touched:
- Move the last paragraph before the Parameters section ("For conversion ...") before the note on the time constants.
- Put the material on the two different ways in which the model can handle input into a note as well.
| /* BeginUserDocs: neuron, integrate-and-fire, current-based | ||
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| Short description | ||
| +++++++++++++++++ | ||
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| Leaky integrate-and-fire neuron model with exponential PSCs | ||
| Leaky integrate-and-fire neuron model with exponential shaped input currents. |
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| Leaky integrate-and-fire neuron model with exponential shaped input currents. | |
| Leaky integrate-and-fire neuron model with exponential-shaped input currents |
| * a hard threshold, | ||
| * a fixed refractory period, | ||
| * no adaptation mechanisms, | ||
| * exponential shaped synaptic input currents according to [1]_ |
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| * exponential shaped synaptic input currents according to [1]_ | |
| * exponential-shaped synaptic input currents according to [1]_. |
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| .. math:: | ||
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| i_{\text{syn, X}}(t) = e^{-\frac{t}{\tau_{\text{syn, X}}}} \Theta(t) |
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I would include the weight w here and in the following equations to ensure that units work out, in the same corresponding way as for iaf_psc_delta.
| ``tau_syn_ex`` 2 ms :math:`\tau_{\text{syn, ex}}` Rise time of the excitatory synaptic alpha function | ||
| ``tau_syn_in`` 2 ms :math:`\tau_{\text{syn, in}}` Rise time of the inhibitory synaptic alpha function | ||
| ``I_e`` 0 pA :math:`I_\text{e}` Constant input current | ||
| ``V_min`` :math:`-\infty` mV :math:`V_{\text{min}}` Absolute lower value for the membrane potential |
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A bit surprising, but iaf_psc_exp does not seem to have V_min. Adding it would be a different issue.
| ``V_min`` :math:`-\infty` mV :math:`V_{\text{min}}` Absolute lower value for the membrane potential |
| By default, :math:`V_\text{m}` is not bounded from below. To limit | ||
| hyperpolarization to biophysically plausible values, set parameter | ||
| :math:`V_{\text{min}}` as lower bound of :math:`V_\text{m}`. |
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iaf_psc_exp does not seem to have this ...
| By default, :math:`V_\text{m}` is not bounded from below. To limit | |
| hyperpolarization to biophysically plausible values, set parameter | |
| :math:`V_{\text{min}}` as lower bound of :math:`V_\text{m}`. |
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Here is link to output on Read the Docs: https://nest-simulator--3084.org.readthedocs.build/en/3084/models/iaf_psc_exp.html |
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@ackurth @heplesser After some discussion with David D. about models, we noticed that in the original model description, it mentions the stochastic use case - which does not appear to be in this version - is that correct?
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