scholarly journals Effects of medial amygdalar and hypothalamic lesions on adaptation to a water deprivation schedule

1970 ◽  
Vol 18 (1) ◽  
pp. 3-4 ◽  
Author(s):  
Ellen Rosen Bauer
Keyword(s):  
Water Deprivation ◽  
Deprivation Schedule ◽  
Hypothalamic Lesions ◽  
Water Deprivation Schedule

Adaptation to a Water-Deprivation Schedule in Guinea Pigs

1968 ◽  
Vol 23 (3) ◽  
pp. 737-738 ◽  
Author(s):  
J. Dutch ◽  
L. B. Brown
Keyword(s):  
Water Consumption ◽  
Guinea Pigs ◽  
Water Deprivation ◽  
Deprivation Schedule ◽  
Water Deprivation Schedule

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.

Experimental control of fractures produced by electroconvulsive shock

1960 ◽  
Vol 199 (3) ◽  
pp. 573-574 ◽  
Author(s):  
David G. McDonald
Keyword(s):  
Body Weight ◽  
Electroconvulsive Shock ◽  
Water Deprivation ◽  
Deprivation Schedule ◽  
Experimental Control ◽  
Water Deprivation Schedule ◽  
Clonic Convulsions ◽  
Current Incidence

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.

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

1974 ◽  
Vol 35 (1) ◽  
pp. 367-370 ◽  
Author(s):  
J. Dutch ◽  
L. B. Brown
Keyword(s):  
Guinea Pig ◽  
Food Deprivation ◽  
Guinea Pigs ◽  
Water Deprivation ◽  
Deprivation Schedule ◽  
Food Deprivation Schedule ◽  
Water Deprivation Schedule

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.

Inhibition of ad Libitum Feeding in Rats by Salt Injections and Water Deprivation

1972 ◽  
Vol 24 (2) ◽  
pp. 215-224 ◽  
Author(s):  
F. M. Toates ◽  
Keith Oatley
Keyword(s):  
Food Intake ◽  
Water Deficit ◽  
Linear Transformation ◽  
Water Deprivation ◽  
Food Demand ◽  
Deprivation Schedule ◽  
Low Level ◽  
Non Linear ◽  
Ad Libitum ◽  
Ad Libitum Feeding

Inhibition of ad libitum feeding in rats was induced by hypertonic NaCl injections. Though osmotic loads of sufficient size were capable of abolishing feeding completely for a time, the effect was not as large as had been predicted from a hypothesis of strictly linear subtractive inhibition. Feeding at a low level of hunger seems to be somewhat less affected by osmotic inhibition than feeding on a deprivation schedule. Inhibition of feeding was also produced by deprivation of water, and both the inhibition of food intake during deprivation, and the disinhibition by subsequent drinking indicated that the amount of inhibition of food intake is a non-linear (accelerating) function of water deficit. A model of the process indicating that the thirst signal undergoes a non-linear transformation before being subtracted from the signal corresponding to food demand is proposed.

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

1968 ◽  
Vol 23 (3_suppl) ◽  
pp. 1151-1154 ◽  
Author(s):  
L. W. Buckalew ◽  
G. M. Cartwright
Keyword(s):  
Behavioral Effects ◽  
Dose Effect ◽  
Albino Rats ◽  
Deprivation Schedule ◽  
Muscle Tonus ◽  
Albino Rat ◽  
Behavioral Indices ◽  
Water Deprivation Schedule ◽  
Dose Levels ◽  
Level Group

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.

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