Invariant visual object recognition in rats

Rats were trained in an operant box that was equipped with an LCD monitor, a central touch sensor, and two flanking feeding tubes (also functioning as touch sensors). Following initiation of a behavioral trial (triggered by the rat licking the central sensor), one of the two target objects was presented on the monitor and the animal had to lick either the left or the right feeding tube (depending on the object identity) to receive reward. The target objects were presented across a large range of variations in pose, size and lighting.

For details see:

Zoccolan D*, Oertelt N*, DiCarlo JJ & Cox DD (2009). A rodent model for the study of invariant visual object recognition. Proc. Natl. Acad. Sci. USA 106, 8748-53 [link] [pdf] [Supp Inf]