Hi Benedict, Could you be a little more precise about the spike pattern you would like? Do you need a generator that emits spikes at fixed intervals, e.g., on spike every 10 ms? You could then use the spike_generator, but you will need to give spike times explicitly. Best, Hans Ekkehard -- Prof. Dr. Hans Ekkehard Plesser Head, Department of Data Science Faculty of Science and Technology Norwegian University of Life Sciences PO Box 5003, 1432 Aas, Norway Phone +47 6723 1560 Email hans.ekkehard.plesser(a)nmbu.no Home http://arken.nmbu.no/~plesser On 06/03/2021, 20:34, "Benedikt Feldotto" <feldotto(a)in.tum.de> wrote: Dear all, maybe I am overlooking something, I am searching for a spike frequency generator without noise. I was looking at the poisson generator, but as far as I can see there is no parameter to adjust/remove the noise. Is there any node available that takes as input a frequency and outputs spikes at this given frequency? Thanks! Best, Benedikt -- Benedikt Feldotto M.Sc. Research Assistant Human Brain Project - Neurorobotics Technical University of Munich Department of Informatics Chair of Robotics, Artificial Intelligence and Real-Time Systems Room HB 2.02.20 Parkring 13 D-85748 Garching b. München Tel.: +49 89 289 17628 Mail: feldotto(a)in.tum.de https://www6.in.tum.de/en/people/benedikt-feldotto-msc/ www.neurorobotics.net _______________________________________________ NEST Users mailing list -- users(a)nest-simulator.org To unsubscribe send an email to users-leave(a)nest-simulator.org _______________________________________________ NEST Users mailing list -- users(a)nest-simulator.org To unsubscribe send an email to users-leave(a)nest-simulator.org

Hi Benedict, You could convert the poisson_generator to a fixed_interval_generator. Replace the parameters of the generator by "interval" (to be given in ms). On setting the parameter, you should make sure it is a multiple of the resolution. Convert it to time steps in calibrate(). The, change void nest::poisson_generator::update( Time const& T, const long from, const long to ) {   assert( to >= 0 && ( delay ) from < kernel().connection_manager.get_min_delay() );   assert( from < to );   if ( P_.rate_ <= 0 )   {     return;   }   for ( long lag = from; lag < to; ++lag )   {     if ( not device_.is_active( T + Time::step( lag ) ) )     {       continue; // no spike at this lag     }     DSSpikeEvent se;     kernel().event_delivery_manager.send( *this, se, lag );   } } to call kernel().event_delivery_manager.send( *this, se, lag ) if and only if T + Time::step(lag) is a multiple of the resolution. For additional flexibility, you could add an offset parameter to shift from multiples of the resolution h to n + m * h. Furthermore, reduce the event_hook( DSSpikeEvent& e ) to just void nest::poisson_generator::event_hook( DSSpikeEvent& e ) {     e.get_receiver().handle( e ); } We need this event hook to make sure all target neurons get the spike. Delivery is local, spikes will not be sent via MPI. Best, Hans Ekkehard -- Prof. Dr. Hans Ekkehard Plesser Head, Department of Data Science Faculty of Science and Technology Norwegian University of Life Sciences PO Box 5003, 1432 Aas, Norway Phone +47 6723 1560 Email hans.ekkehard.plesser(a)nmbu.no Home http://arken.nmbu.no/~plesser On 08/03/2021, 10:25, "Benedikt Feldotto" &lt;feldotto(a)in.tum.de&gt; wrote:     Hi Hans,     yes, that is what I am searching for: A generator that emits spikes at     fixed intervals. However, I do need to let it run whenever I call the     nest.Simulate(), which I think is not possible in an intuitive way with     the spike_generator. Is there any way to tweak a generator to let it     emit spikes in fixed intervals, in a similar fashion as the e.g. the     poisson_generator?     Thanks!     Best,     Benedikt     On 08.03.21 09:13, Hans Ekkehard Plesser wrote: would like? Do you need a generator that emits spikes at fixed intervals, e.g., on spike every 10 ms? You could then use the spike_generator, but you will need to give spike times explicitly. wrote: spike frequency generator, but as noise. Is and outputs Systems     --     Benedikt Feldotto M.Sc.     Research Assistant     Human Brain Project - Neurorobotics     Technical University of Munich     Department of Informatics     Chair of Robotics, Artificial Intelligence and Real-Time Systems     Room HB 2.02.20     Parkring 13     D-85748 Garching b. München     Tel.: +49 89 289 17628     Mail: feldotto(a)in.tum.de https://www6.in.tum.de/en/people/benedikt-feldotto-msc/     www.neurorobotics.net _______________________________________________     NEST Users mailing list -- users(a)nest-simulator.org     To unsubscribe send an email to users-leave(a)nest-simulator.org _______________________________________________ NEST Users mailing list -- users(a)nest-simulator.org To unsubscribe send an email to users-leave(a)nest-simulator.org