AN APPARATUS FOR DELIVERING PAIN SHOCK TO MONKEYS¹

Abstract

A procedure has been developed whereby pain shock can be delivered reliably to Squirrel Monkeys. A minimum of restraint is imposed since only the tail is motionless. The monkey is restrained in the seated position by the horizontal plate "A" and the movable waist lock "B", as well as the hinged side plate "C". The closeness of the rest bars, "D" to "A", prevents full extension of the legs at the hip and escape through the waist lock. No harmful effects have been noted during the past year in daily 6-hr sessions.