.. currentmodule:: brian

.. index::
   pair: example usage; NeuronGroup
   pair: example usage; Connection
   pair: example usage; run
   pair: example usage; SpikeGeneratorGroup
   pair: example usage; StateMonitor

.. _example-misc_if:

Example: if (misc)
==================

A very simple example Brian script to show how to implement
an integrate and fire model. In this example, we also
drive the single integrate and fire neuron with
regularly spaced spikes from the :class:`SpikeGeneratorGroup`.

::

    from brian import *
    
    tau = 10 * ms
    Vr = -70 * mV
    Vt = -55 * mV
    
    G = NeuronGroup(1, model='V:volt', threshold=Vt, reset=Vr)
    
    input = SpikeGeneratorGroup(1, [(0, t * ms) for t in linspace(10, 100, 25)])
    
    C = Connection(input, G)
    C[0, 0] = 2 * mV
    
    M = StateMonitor(G, 'V', record=True)
    
    G.V = Vr
    run(100 * ms)
    plot(M.times / ms, M[0] / mV)
    show()