# intfire.py ---
#
# Filename: intfire.py
# Description:
# Author:Subhasis Ray
# Maintainer:
# Created: Thu Jun 21 16:40:25 2012 (+0530)
# Version:
# Last-Updated: Sat Jun 23 13:44:10 2012 (+0530)
# By: subha
# Update #: 35
# URL:
# Keywords:
# Compatibility:
#
#
# Commentary:
#
# Code snippet to show some operations on IntFire.
#
#
# Change log:
#
#
#
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 3, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street, Fifth
# Floor, Boston, MA 02110-1301, USA.
#
#
# Code:
"""
Demonstrates connection between 2 IntFire neurons to observe spike generation.
"""
import moose
[docs]def connect_two_intfires():
"""
Connect two IntFire neurons so that spike events in one gets
transmitted to synapse of the other.
"""
if1 = moose.IntFire('/if1')
if2 = moose.IntFire('/if2')
sf1 = moose.SimpleSynHandler( '/if1/sh' )
moose.connect( sf1, 'activationOut', if1, 'activation' )
sf1.synapse.num = 1
syn1 = moose.element(sf1.synapse)
# Connect the spike message of if2 to the first synapse on if1
moose.connect(if2, 'spikeOut', syn1, 'addSpike')
[docs]def connect_spikegen():
"""
Connect a SpikeGen object to an IntFire neuron such that spike
events in spikegen get transmitted to the synapse of the IntFire
neuron.
"""
if3 = moose.IntFire('/if3')
sf3 = moose.SimpleSynHandler( '/if3/sh' )
moose.connect( sf3, 'activationOut', if3, 'activation' )
sf3.synapse.num = 1
sg = moose.SpikeGen('sg')
syn = moose.element(sf3.synapse)
moose.connect(sg, 'spikeOut', syn, 'addSpike')
[docs]def setup_synapse():
"""
Create an intfire object and create two synapses on it.
"""
if4 = moose.IntFire('if4')
sf4 = moose.SimpleSynHandler( 'if4/sh' )
sg1 = moose.SpikeGen('sg1')
sg2 = moose.SpikeGen('sg2')
sf4.synapse.num = 2 # set synapse count to 2
sf4.synapse[0].weight = 0.5
sf4.synapse[0].delay = 1e-3
sf4.synapse[1].weight = 2.0
sf4.synapse[1].delay = 2e-3
moose.connect(sg1, 'spikeOut', sf4.synapse[0], 'addSpike')
moose.connect(sg2, 'spikeOut', sf4.synapse[1], 'addSpike')
[docs]def main():
"""
Demonstrates connection between 2 IntFire neurons to observe
spike generation.
"""
connect_two_intfires()
connect_spikegen()
setup_synapse()
#
# intfire.py ends here