dual m-sequence visual Spatio-Temporal action field (STAF)
The paper describing the technique is here. Annotated Matlab code (ZIP) can be downloaded here.
Videos describing the magnetic tether method and experiments can be found here and here. The modular LED panel architecture was published by Reiser and Dickinson here and can be purchased here. Parts lists for the arenas in our lab can be found here (thanks to Sara).