a) Lyzer Semi-Automatic Y-shaped Maze for study of shock motivated brightness discrimination responses in rats. With wire grill , cue light , grill charge and rat presence indicators, adjustable shock stimulus 0.1 to 1.0 mA. Remote control unit permits easy handling and operation of pre-programmed experimental procedure from distance without touching or disturbing the animal. b) Lyzer Automatic Y-Maze : Same as above but with timer from 0 to 999.9 second to measure the latency time and also monitors the movement of rat automatically | 
