Created
February 8, 2016 10:10
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Record spikes at a synapse with Brian 2
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''' | |
Record the spikes at a synapse with Brian 2. Note that you cannot use | |
SpikeMonitor for this task, as it is only meant to record from a NeuronGroup | |
(or another SpikeSource such as PoissonGroup). | |
''' | |
from brian2 import * | |
# The record_spikes function only works with the numpy target | |
prefs.codegen.target = 'numpy' | |
synapse_spikes = [] | |
@check_units(i=1, j=1, k=1, t=second, result=1) | |
def record_spikes(i, j, k, t): | |
for i, j, k in zip(i, j, k): | |
synapse_spikes.append((i, j, k, t/second)) | |
return 0.0 # dummy result | |
G = NeuronGroup(2, 'dv/dt = 100*Hz : 1', threshold='v>1', reset='v=0') | |
G.v = [0, 0.5] | |
G2 = NeuronGroup(2, 'v:1') | |
S = Synapses(G, G2, pre='dummy=record_spikes(i, j, k, t)', | |
multisynaptic_index='k') | |
S.connect('i==j', n=5) | |
S.delay = 'k*1*ms' | |
run(20*ms) | |
# Transform to a 2D array (one row per spike) | |
synapse_spikes = np.array(synapse_spikes) | |
print(synapse_spikes) |
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