The Five-choice serial-reaction time task (5CSRTT) is a laboratory behavioral task used in psychological research to assess visuospatial attention and motor impulsivity in animals. The task takes place within an operant chamber equipped with at least five holes (apertures) that can illuminate, and a food tray to deliver reward. The 5CSRTT requires the animal (typically a rat, although mice can also be used) to correctly identify which of the five apertures has been briefly illuminated, via a nose poke, in order to receive a sugar reward. The difficulty of the task is controlled by the length of time the aperture is illuminated: a shorter illumination time requires the animal to pay greater attention, and thus is more difficult (as shown by decreased accuracy). Between every trial, there is