Fig. 1.

(A) Attentional set-shifting task. The image shows a common form of the attentional set-shifting task. Rats are trained to choose the appropriate bowl to dig for food reward based on defined discrimination rules that change at every successive stage of the task. Each bowl can vary in the shape of the bowl and the odor of the media. Intradimensional shift comprises a total stimulus change, but with the same measure (odor or shape) still being the relevant stimulus to attend to. During extradimensional shifting, the other dimension, which had so far been irrelevant, becomes the relevant measure. (B) Go/No-go task. Representative image showing subjects performing on go trials (in response to the color green on screen) and inhibiting response on no-go trials (in response to the color red on screen).