The APA is a circular metal arena shock grid underneath a rotating arena. The subjects are allowed to explore the arena while avoiding a prohibited sector using visual cues in and around the arena. Punishment in the form of shock is delivered to the subject if it enters the prohibited sector. Passive avoidance is observed when the arena is not rotating while active avoidance is observed when the arena is rotating.
The Bowman Style Rodent Restrainer holds rodents up to 750g. Rodents can be placed by removing the upper rods and replacing them after insertion. Alternatively, they can be placed through an access porthole in the rear. The front “guillotine” door can be adjusted and locked into three possible positions. This door has stainless steel “spring loaded” lock. Suction cup feet on the white plastic base secure the device during use.