コード例 #1
0
import numpy.random as rand
import matplotlib.pyplot as plt

p_range = [0, 0.1, 0.2, 0.3, 0.4, 0.5]  # rewiring probabilities
n_ex_layer=8
N_ex=100
N_in=200
T  = 1000  # Simulation time
Ib = 15.0    # extra current to be injected
window = 50  # mean firing rate averaging window
shift = 20  # mean firing rate shift
step = 10  # bin size in histogram
start_time = 0  # starting time for counting mean firing rate

for p in p_range:
  net = create_izModularNetwork(p)

############# Q1(a) #############

  vertical = {}
  for i in xrange(len(net.layer)):
    vertical[i] = np.concatenate(net.layer[i].S.values(), axis=1)
  network_matrix = np.concatenate(vertical.values(), axis=0)
  plt.matshow(network_matrix, fignum=100, cmap=plt.cm.gray)
  plt.title('Connection matrix (p=%.1f)' %p)
  # plt.show()
  plt.savefig('q1a_%.1f.svg' % p)
  plt.clf()

############# Q1(b) #############
コード例 #2
0
from IzModularNetwork import create_izModularNetwork
import numpy as np
import numpy.random as rand
import matplotlib.pyplot as plt



############# Q2 #############


T  = 1000 * 5  # Simulation time
Ib = 15.0    # extra current to be injected

p = rand.random()
net = create_izModularNetwork(p)

## Initialise layers
for lr in xrange(len(net.layer)):
  net.layer[lr].v = -65 * np.ones(net.layer[lr].N)
  net.layer[lr].u = net.layer[lr].b * net.layer[lr].v
  net.layer[lr].firings = np.array([])

## SIMULATE
for t in xrange(T):

  # Deliver random background current to exhibitory layers
  for i in xrange(len(net.layer)-1):
    net.layer[i].I = Ib * rand.poisson(0.01, net.layer[i].N)
  net.layer[8].I = np.zeros(200)