The Wilson and Bower 1992 piriform cortex model is distributed with GENESIS:

http://genesis-sim.org/project/genesis

It is located in the following directory:

./genesis-2.3/genesis/Scripts/piriform

and can be started with the command:

genesis Piriform.g

The below window should appear:



To use the simulator, press the simulate button.  After a brief while
the simulation will end (see genesis prompt).  Then select desired
displays with the interface, and click the capital Simulate button to
switch to playback mode.  Click playback and the display windows will
be refreshed.

More information is also available in the GENESIS book.