.. _run_simulation_plot_input_output:

Run a simulation and plot the input and output spike trains
========

At this point, the Network Builder contains a complete specification of our model network. However, it doesn't actually create the network until you switch the Create button ON.

.. image::
    fig/create.gif
    :align: center

Switching Create ON makes the representation of the network available for NEURON's computational engine to use in a simulation.

Now click on the Network Builder's SpikePlot button to bring up a graph that will show the input and output spike trains.

.. image::
    fig/spikeplot_1.gif
    :align: center

Next bring up a RunControl and set Tstop to 200 ms. Click on Init & Run and see what happens.

Then bring up a VariableTimeStep control, turn on Local variable dt, and run another simulation.

This figure shows the results after Color/Brush was used to specify thick red and black lines for S0 and C1, respectively.

.. image::
    fig/donex.gif
    :align: center

The speedup with Local variable dt ON reflects the difference between continuous time and discrete event simulations.