Adaptation to 23.5-Hr. Food and Water Deprivation Schedules in the Rat and Guinea Pig

20 rats and 20 guinea pigs were compared on a 23.5-hr. water-deprivation schedule and on a 23.5-hr. food-deprivation schedule. Rats showed a satisfactory adjustment to both these schedules, while guinea pigs adjusted to water-deprivation but not to the food-deprivation schedule.

Adaptation to a Water-Deprivation Schedule in Guinea Pigs

2 experiments concerned adaptation to a water deprivation schedule. Guinea pigs needed about 21 days to adjust to such a schedule, and a green supplement which is necessary for maintaining health does not interfere markedly with water consumption.

General and Differential Behavioral Effects of Five Ethanol Dosages on the Albino Rat

Investigation of immediate behavioral effects of 5 ethanol dose levels on 30 albino rats was undertaken. Each dose-level group had 5 Ss, with each S on a different water-deprivation schedule. Behavioral indices included respiration, balance, muscle tonus, auditory sensitivity, activity, coordination, and dose-effect length. Low doses resulted in a stimulative effect, while larger doses produced increasing incapacitation of caudorostral progression, with the highest dose of ethanol producing unconsciousness.

Experimental control of fractures produced by electroconvulsive shock

Incidence of fractures following ECS was found to be significantly reduced by placing animals on a water deprivation schedule, thus reducing body weight significantly. Only animals showing ‘clonic-only’, as opposed to tonic-clonic, convulsions developed fractures. Highest incidence of fractures was found to occur after first ECS, incidence tapering off rapidly thereafter. It was concluded that by reducing body weight through water deprivation, as well as manipulating the strength and duration of the convulsing current, incidence of fractures could be kept at a minimum.