How to draw an image of the relationship between time and firing rate?

Getting Started
1

Hi everyone, I am a novice. In the process of using nengo, I have a question, how to draw an image of the relationship between time and firing rate? I would be very grateful if you can answer my question.

2

Hi YL0910,

I’ve made a short script here that shows you how you can plot the firing rates against time, or if the neurons are spiking, how you can make a raster plot showing when spikes occur over time from each of the neurons.

import matplotlib.pyplot as plt
import numpy as np
import nengo

spiking = False

if spiking:
    neuron_type = nengo.LIF()
else:
    neuron_type = nengo.RectifiedLinear()

with nengo.Network() as net:
    input = nengo.Node(np.cos)
    ens = nengo.Ensemble(
        n_neurons=10,
        dimensions=1,
        neuron_type=neuron_type,
    )
    nengo.Connection(input, ens)

    probe = nengo.Probe(ens.neurons)

with nengo.Simulator(net) as sim:
    sim.run(3)

if spiking:
    from nengo.utils.matplotlib import rasterplot
    rasterplot(sim.trange(), sim.data[probe])
    plt.ylabel('Neuron #')
else:
    plt.plot(sim.trange(), sim.data[probe])
    plt.ylabel('Firing rate (Hz)')
plt.xlabel('Time (s)')
plt.show()

Does this answer your question?

3

Thank you very much for answering my question!