In this protocol, a novel application of scent discrimination is described. The Dig task is a reasonably inexpensive task that can be used to assess frontally-mediated cognition following brain damage.
Martens, K. M., Vonder Haar, C., Hutsell, B. A., Hoane, M. R. The Dig Task: A Simple Scent Discrimination Reveals Deficits Following Frontal Brain Damage. J. Vis. Exp. (71), e50033, doi:10.3791/50033 (2013).