Markham, M. R., Butt, A. E., & Dougher, M. J. (1996).
A computer touch-screen apparatus for training visual discriminations in rats.
Journal of the Experimental Analysis of Behavior,
65, 173-182.
We describe an operant conditioning apparatus that uses
computerized touch-screen technology and is designed for the
versatile and highly controlled testing of rats in a potentially
wide variety of behavioral paradigms. Although
computer-controlled touch-screen systems have been developed for
use with pigeons, monkeys, and humans, analogous technologies and
methods have not yet been developed for rats. The development of
a touch-screen system for rats could enhance the efficiency of
behavioral research with rats, and may offer a unique tool for
studying animal learning. In the first test of the utility of the
apparatus, 3 Sprague-Dawley rats learned to activate the touch
screen only after the touch-screen panel was made slightly
movable. These animals then learned to discriminate visual
stimuli presented on the computer monitor, but only after the
food magazine and pellet dispenser were moved to the rear of the
chamber opposite the stimulus display and response window. In a
test of the utility of the modified apparatus, 6 Long-Evans rats
learned to activate the touch screen and learned one of three
different simple discriminations using computer-generated,
visually presented stimuli. A basic method for training rats to
activate the computer touch screen and for visual discrimination
training is described. Results show that rats learned to activate
the touch screen and discriminate visual stimuli presented on a
computer monitor. Potential applications and advantages of the
touch-screen-equipped rat operant conditioning chamber are
discussed.
Key words: visual discrimination, computer images, touch
screen,rats