pulsepacket_generator – Generate sequence of Gaussian pulse packets
===================================================================

Description
+++++++++++

The pulsepacket_generator produces a spike train contains Gaussian pulse
packets centered about given  times.  A Gaussian pulse packet is
a given number of spikes with normal distributed random displacements
from the center time of the pulse.
It resembles the output of synfire groups of neurons.

- All targets receive identical spike trains.
- New pulse packets are generated when activity or sdev are changed.
- Gaussian pulse are independently generated for each given
  pulse-center time.
- Both standard deviation and number of spikes may be set at any time.
  Pulses are then re-generated with the new values.

.. include:: ../models/stimulation_device.rst

pulse_times
    Times of the centers of pulses (ms)

activity
    Number of spikes per pulse

sdev
    Standard deviation of spike times in each pulse (ms)

Setting parameters from a stimulation backend
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The parameters in this stimulation device can be updated with input
coming from a stimulation backend. The data structure used for the
update holds one value for each of the parameters mentioned above.
The indexing is as follows:

 0. activity
 1. sdev
 2. pulse_times

Sends
+++++

SpikeEvent

See also
++++++++
:doc:`Device <index_device>`, :doc:`Generator <index_generator>`