Nengo Demos

This section describes the collection of demos that comes with Nengo. To use any of these demo scripts in Nengo, do the following:

• Open

  Open any <demo>.py file by clicking on the icon (or going to File->Open from file in the menu) and selecting the file from demos directory in your Nengo installation.

• Run

  Run the demo by selecting the network created in the previous step and then clicking the icon in the upper right corner of the Nengo main window. Alternatively, right-click on the network and select ‘Interactive Plots’. Click the arrow to start the simulation.

  Note

  You don’t need to select the network if there is only one available to run.

• Delete

  Remove the demo network after using it by right clicking and selecting ‘Remove model’.

  Note

  You don’t need to remove a model if you reload the same script again, it will automatically be replaced.

More sophisticated examples can be found in the Model Archive at http://models.nengo.ca.

Introductory Demos

• A Single Neuron
• Two Neurons
• Population of Neurons
• 2D Representation

Simple Transformations

• Communication Channel
• Squaring the Input
• Addition
• Combining 1D Representations into a 2D Representation
• Performing Multiplication
• Circular Convolution

Dynamics

• A Simple Integrator
• Controlled Integrator
• Controlled Integrator 2
• A Simple Harmonic Oscillator

Basal Ganglia Based Simulations

• Basal Ganglia
• Cycling Through a Sequence
• Routed Sequencing
• A Question Answering Network
• A Question Answering Network with Memory
• A Controlled Question Answering Network

Learning

• Learning a Communication Channel
• Learning Multiplication
• Learning to Compute the Square of a Vector

Miscellaneous

• Simple Vehicle
• Arm Control