Dear Abolfazl,

With current master it is possible to use the index of the neuron in a mathematical expression when specifying the rate (see our documentation on parametrization). It is currently not possible to include the current time `t` however.

Using parametrization to get the rate to depend on the global id is not straight forward however, because you will need to create one poisson generator per neuron, each with a rate depending on the individual neuron. Another problem is that nest.poisson_generator does not accept negative rates. And, as it is not possible to use the current time, you would be better off creating a new poisson model where you can define your rate. The best way to do so it to use NESTML (https://nestml.readthedocs.io/en/latest/). Both the index id and current time should be available on this level. I have added our NESTML expert Charl in CC.

Best wishes,

Stine

Fra: Abolfazl Ziaeemehr <a.ziaeemehr@gmail.com>
Sendt: lørdag 26. desember 2020 12:16
Til: NEST User Mailing List <users@nest-simulator.org>
Emne: [NEST Users] spatiotemporal Poisson generator

Hello everyone,

Is it possible to include a spatiotemporal poisson generator in the simulation?

I am trying to apply a current to a population of neurons which is something like this?

where `i` is the index of the neuron and `t` is the current time of the simulation.

Thank you for any guidance.

best,

--

Abolfazl Ziaeemehr
PhD in Computational Neuroscience
Institute for Advanced Studies in 
Basic Sciences (IASBS)
Page: iasbs.ac.ir/~a.ziaeemehr
           https://github.com/Ziaeemehr