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@nmbu.no
Home
http://arken.nmbu.no/~plesser
On 08/03/2021, 10:25, "Benedikt
Feldotto" <feldotto@in.tum.de> 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:
> 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@nmbu.no
> Home
http://arken.nmbu.no/~plesser
>
>
>
>
> On 06/03/2021, 20:34, "Benedikt
Feldotto" <feldotto@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@in.tum.de
>
>
https://www6.in.tum.de/en/people/benedikt-feldotto-msc/
> www.neurorobotics.net
>
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_______________________________________________
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--
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@in.tum.de
https://www6.in.tum.de/en/people/benedikt-feldotto-msc/
www.neurorobotics.net
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