 The life support system (LSS) of the Frog Otolith Experiment Package (FOEP) maintains a regulated environment within the FOEP to assure the survival and normal functioning of the experimental specimens.The LSS is designed to meet the physiological requirements of two demotorized frogs weighing 350 g (12 oz) each.Frogs are demotorized by cutting the limb nerves, which reduces their metabolic rate.