Hello Prof. Plesser,
I did use a voltmeter and the membrane potential fluctuated but always stayed below the
threshold. However, it's not related to the connection strengths, but the external
input.
Specifically, when each neuron received an additional excitatory Poissonian spike train at
2.71 kHz then, it has to also receive a constant external direct current of 499 pA
(section 2.3.1 of the paper). This requires the parameter I_e to be set to 499 pA in the
neuron_params. This resolves my issue and gives an average firing rate of 10Hz.
Thanks a lot for your help!
Best regards,
Evgenia