Test Description: A large arena (40 cm x 40 cm) with infrared beams at three different levels is used
to record rearing, hole poke, and locomotor activity. The animal is placed in the
center and its activity is measured for 20 minutes. Data from this test is analyzed
in five, 4-minute intervals. The total distance traveled (cm), vertical movement number
(rearing), number of hole pokes, and the center:total distance ratio are then graphed.