scholarly journals Effects of thirst drive on cue utilization and cue dominance of spatially separate cues in albino rats

1974 ◽  
Vol 4 (5) ◽  
pp. 451-453 ◽  
Author(s):  
Jerome S. Cohen ◽  
Giselle Tubaro
Keyword(s):  
Albino Rats ◽  
Cue Utilization ◽  
Thirst Drive

Motivational Effects of Stimuli Paired with Buildup of the Thirst Drive

1969 ◽  
Vol 24 (1) ◽  
pp. 331-337
Author(s):  
Albert M. Swanson ◽  
Glenn D. Richmond
Keyword(s):  
Control Group ◽  
Albino Rats ◽  
Control Environment ◽  
Control Groups ◽  
And Control ◽  
Experimental Group ◽  
Thirst Drive

Albino rats were adapted to a distinctive conditioning environment over a 4-day period and were then divided into experimental and control groups. The experimental group experienced 23 hr. of water privation in the conditioning environment on each of 14 successive days. The control group experienced only the first ½ hr. of privation in the conditioning environment and spent the rest of each privation period in a control environment. During subsequent tests in the conditioning environment, with Ss satiated, the experimental Ss consumed significantly more water than the control Ss. A replication produced similar results and indicated that the effect could be mediated by general, as well as specific, characteristics of the conditioning environment. The relation of the results to the conditioned drive hypothesis is discussed, and the direction of continuing research is indicated.

Irrelevant Thirst Drive and Light Aversion

1964 ◽  
Vol 14 (3) ◽  
pp. 899-904 ◽  
Author(s):  
Lawrence Dachowski
Keyword(s):  
Bright Light ◽  
Albino Rats ◽  
And Performance ◽  
Complex Manner ◽  
Better Than ◽  
Extinction Treatment ◽  
Thirst Drive

In two experiments satiated female albino rats learned to press a bar to turn off a bright light, and performance was measured with 0 or 24 hours thirst added on two test days. The 28 Ss of Exp. I received extinction treatment on the test days; 14 Ss of Exp. II continued dark-rewarded bar pressing on the test days. Added thirst had no over-all effect in Exp. I and decreased performance in Exp. II. Ss extinguished with the light always on performed better than those with the light always off, and the amount of decrease from the first to the second extinction day depended in a complex manner on both lighting and thirst conditions. Thus, Hull's prediction of energization by irrelevant drives is not confirmed. The data were considered in relation to Estes' stimulus theory of drive.

Effect of Bilateral Hippocampal Lesions on Cue Utilization in the Rat

1978 ◽  
Vol 43 (3) ◽  
pp. 863-866 ◽  
Author(s):  
R. P. Plunkett
Keyword(s):  
Light Stimulus ◽  
Amygdaloid Complex ◽  
Albino Rats ◽  
Cue Utilization ◽  
Hippocampal Lesions ◽  
Bilateral Lesions ◽  
Large Deficit

8 albino rats received bilateral lesions of the hippocampus, 8 received bilateral lesions of the amygdaloid complex, and 8 served as unoperated controls. The rats were trained to find food at the end of an arm of a cross-maze, associated with a conspicuous light stimulus as the first task. Rats were required to relearn the first task with the light stimulus absent. Hippocampal-lesioned rats did not differ from controls on the first task but showed a large deficit on the second task.

Cue utilization and drive level in albino rats.

1971 ◽  
Vol 75 (2) ◽  
pp. 248-253 ◽  
Author(s):  
Gabor A. Telegdy ◽  
Jerome S. Cohen
Keyword(s):  
Drive Level ◽  
Albino Rats ◽  
Cue Utilization

Effects of renovascular hypertension on rat adrenal zona glomerulosa

1978 ◽  
Vol 36 (2) ◽  
pp. 582-583
Author(s):  
G. Mazzocchi ◽  
P. Rebuffat ◽  
C. Robba ◽  
P. Vassanelli ◽  
G. G. Nussdorfer
Keyword(s):  
Renovascular Hypertension ◽  
Left Kidney ◽  
Renin Angiotensin System ◽  
Plasma Renin ◽  
Zona Glomerulosa ◽  
Ultrastructural Changes ◽  
Albino Rats ◽  
Left Renal Artery ◽  
Angiotensin System ◽  
And Control

It is well known that the rat adrenal zona glomerulosa steroidogenic activity is controlled by the renin-angiotensin system. The ultrastructural changes in the rat zona glomerulosa cells induced by renovascular hypertension were described previously, but as far as we are aware no correlated biochemical and morphometric investigations were performed.Twenty adult male albino rats were divided into 2 experimental groups. One group was subjected to restriction of blood flow to the left kidney by the application of a silver clip about the left renal artery. The other group was sham-operated and served as a control. Renovascular hypertension developed in about 10 days: sistolic blood pressure averaged 165 ± 6. 4 mmHg, whereas it was about 110 ± 3. 8 mmHg in the control animals. The hypertensive and control rats were sacrificed 20 days after the operation. The blood was collected and plasma renin activity was determined by radioimmunological methods. The aldosterone concentration was radioimmunologically assayed both in the plasma and in the homogenate of the left capsular adrenal gland.

Further Studies on the Ultrastructure of Harderian Gland in Adult Rats

1974 ◽  
Vol 32 ◽  
pp. 288-289
Author(s):  
Alfredo Feria-Velasco ◽  
Guadalupe Tapia-Arizmendi
Keyword(s):  
Fine Structure ◽  
Domestic Fowl ◽  
Animal Species ◽  
Acinar Cells ◽  
Harderian Gland ◽  
Myoepithelial Cells ◽  
The Other ◽  
Albino Rats ◽  
Adult Rats ◽  
Cell Components

The fine structure of the Harderian gland has been described in some animal species (hamster, rabbit, mouse, domestic fowl and albino rats). There are only two reports in the literature dealing on the ultrastructure of rat Harderian gland in adult animals. In one of them the author describes the myoepithelial cells in methacrylate-embbeded tissue, and the other deals with the maturation of the acinar cells and the formation of the secretory droplets. The aim of the present work is to analize the relationships among the acinar cell components and to describe the two types of cells located at the perifery of the acini.

Cell Fine Structure as Revealed in Dessicator-Dried Resinless Sections

1981 ◽  
Vol 39 ◽  
pp. 622-623
Author(s):  
R. P. Becker ◽  
J. J. Wolosewick ◽  
J. Ross-Stanton
Keyword(s):  
Fine Structure ◽  
Tannic Acid ◽  
Three Dimensional ◽  
Albino Rats ◽  
Cell Organelles ◽  
Vascular Perfusion ◽  
Thin Sections ◽  
Carbon Coated ◽  
Embedding Medium ◽  
Polyethylene Glycol 6000

Methodology has been introduced recently which allows transmission and scanning electron microscopy of cell fine structure in semi-thin sections unencumbered by an embedding medium. Images obtained from these “resinless” sections show a three-dimensional lattice of microtrabeculfee contiguous with cytoskeletal structures and membrane-bounded cell organelles. Visualization of these structures, especially of the matiiDra-nous components, can be facilitated by employing tannic acid in the fixation step and dessicator drying, as reported here.Albino rats were fixed by vascular perfusion with 2% glutaraldehyde or 1.5% depolymerized paraformaldehyde plus 2.5% glutaraldehyde in 0.1M sodium cacodylate (pH 7.4). Tissues were removed and minced in the fixative and stored overnight in fixative containing 4% tannic acid. The tissues were rinsed in buffer (0.2M cacodylate), exposed to 1% buffered osmium tetroxide, dehydrated in ethyl alcohol, and embedded in pure polyethylene glycol-6000 (PEG). Sections were cut on glass knives with a Sorvall MT-1 microtome and mounted onto poly-L-lysine, formvar-carbon coated grids while submerged in a solution of 95% ethanol containing 5% PEG.

Cue utilization in a numerical prediction task

1974 ◽  
Author(s):  
Sarah Lichtenstein ◽  
Timothy C. Earle ◽  
Paul Slovic
Keyword(s):  
Numerical Prediction ◽  
Cue Utilization ◽  
Prediction Task
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