| Records |
| Author |
Zentall, T.R.; Sherburne, L.M. |
Title  |
Transfer of value from S+ to S- in a simultaneous discrimination |
Type |
Journal Article |
| Year |
1994 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
20 |
Issue |
2 |
Pages |
176-183 |
| Keywords |
Animals; *Appetitive Behavior; Attention; Color Perception; Columbidae; *Discrimination Learning; Female; Male; Motivation; Orientation; Pattern Recognition, Visual; *Problem Solving; *Reinforcement Schedule; *Transfer (Psychology) |
| Abstract |
Value transfer theory has been proposed to account for transitive inference effects (L. V. Fersen, C. D. L. Wynne, J. D. Delius, & J. E. R. Staddon, 1991), in which following training on 4 simultaneous discriminations (A+B-, B+C-, C+D-, D+E-) pigeons show a preference for B over D. According to this theory, some of the value of reinforcement acquired by each S+ transfers to the S-. In the transitive inference experiment, C (associated with both reward and nonreward) can transfer less value to D than A (associated only with reward) can transfer to B. Support for value transfer theory was demonstrated in 2 experiments in which an S- presented in the context of a stimulus to which responses were always reinforced (S+) was preferred over an S- presented in the context of a stimulus to which responses were sometimes reinforced (S +/-). |
| Address |
Department of Psychology, University of Kentucky, Lexington 40506 |
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English |
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0097-7403 |
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PMID:8189186 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
258 |
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| Author |
Sugiyama Y |
| Title |
Tool use by wild chimpanzees |
Type |
Journal Article |
| Year |
1994 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
376 |
Issue |
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Pages |
327 |
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Equine Behaviour @ team @ |
Serial |
3041 |
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| Author |
Marinier, S.L.; Alexander, A.J. |
| Title |
The use of a maze in testing learning and memory in horses |
Type |
Journal Article |
| Year |
1994 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
| Volume |
39 |
Issue |
2 |
Pages |
177-182 |
| Keywords |
Horses; Learning; Memory; Maze; Exercise |
| Abstract |
Two mazes were used to test the learning ability and memory of horses, and changes in these abilities. Testing was done on four occasions. On Occasion 1, the horses were run through Maze A until they had reached the criterion of three consecutive correct runs. A week later (Occasion 2), they were retested in Maze A to the same criterion as a measure of memory. On Occasion 3,2 months later, the horses were run through Mazes A and B until they reached the criterion. Occasion 4 took place 1 week later when they were run through Mazes A and B. An estimation of changes in ability to learn came from a comparison of results from Occasions 1 and 3. Similarly, changes in ability to remember came from a comparison of results from Occasions 2 and 4. Nine horses with a variable amount of riding training were the subjects. All horses were able to learn the maze, but the ability varied among horses. There was no obvious correlation between quality of handling of the horses and learning ability. Once the horses had learned the maze, they remembered it perfectly on subsequent occasions. There were changes in the memory and learning ability of the horses, but no clear explanation for this could be found. |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
3573 |
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| Author |
Fritts, S.H.; Bangs, E.E.; Gore, J.F. |
| Title |
The relationship of wolf recovery to habitat conservation and biodiversity in the northwestern United States |
Type |
Journal Article |
| Year |
1994 |
Publication |
Landsc Urban Plan |
Abbreviated Journal |
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| Volume |
28 |
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no |
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Equine Behaviour @ team @ Fritts1994 |
Serial |
6453 |
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| Author |
Fisher, J.; Hinde, R. A. |
| Title |
The opening of milk bottles by birds |
Type |
Journal Article |
| Year |
1994 |
Publication |
British Birds |
Abbreviated Journal |
British Birds |
| Volume |
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Issue |
42 |
Pages |
347-357 |
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no |
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Equine Behaviour @ team @ |
Serial |
6525 |
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| Author |
Aviad, A.D.; Houpt, J.B. |
| Title |
The molecular weight of therapeutic hyaluronan (sodium hyaluronate): how significant is it? |
Type |
Journal Article |
| Year |
1994 |
Publication |
The Journal of rheumatology |
Abbreviated Journal |
J Rheumatol |
| Volume |
21 |
Issue |
2 |
Pages |
297-301 |
| Keywords |
Animals; Horse Diseases/drug therapy; Horses; Humans; Hyaluronic Acid/*chemistry/*therapeutic use; Joint Diseases/*drug therapy/veterinary; Molecular Weight; Osteoarthritis/drug therapy/veterinary; Synovial Fluid/drug effects/physiology; Viscosity |
| Abstract |
Various molecular weight hyaluronic acid (HA) preparations have been injected into joints for the treatment of human and equine osteoarthritis. A therapeutic advantage has been claimed for commercial products with a molecular weight in the range found in normal synovial fluid (SF), compared to lower molecular weight products. But a correlation between molecular weight and efficacy is not borne out by an analysis of the available literature on clinical results. SF viscosity, HA concentration, HA molecular weight and rate of synthesis in joint disease. It is proposed that the beneficial effect of injected HA in joint disease may be due to pharmacological rather than to physical properties. |
| Address |
Rheumatic Disease Unit, Mount Sinai Hospital, University of Toronto, ON, Canada |
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English |
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| ISSN |
0315-162X |
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| Notes |
PMID:8182640 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
35 |
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| Author |
Bauer, I. E.; McMorrow, J. Yalden,; D. W. |
| Title |
The Historic Ranges of Three Equid Species in North-East Africa: A Quantitative Comparison of Environmental Tolerances |
Type |
Journal Article |
| Year |
1994 |
Publication |
Journal of Biogeography |
Abbreviated Journal |
J Biogeogr |
| Volume |
21 |
Issue |
2 |
Pages |
169-182 |
| Keywords |
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| Abstract |
The historic ranges of three equid species native to north-east Africa are analysed with respect to annual rainfall, several temperature parameters and a satellite-derived multispectral index of primary productivity. Equus africanus Fitzinger, Equus grevyi Oustalet and Equus burchelli Gray used to largely replace each other, geographically, with narrow zones of range overlap occurring between E. africanus and E. grevyi in the Awash valley, and between E. grevyi and E. burchelli in southern Ethiopia and northern Kenya. The three species are shown to succeed each other along an environmental gradient. The position of each species on this gradient and the resulting location and extent of its range are discussed. Competitive exclusion, specific adaptations and historic events are likely determinants of equid distribution. In the area of sympatry between E. grevyi and E. burchelli, mixed habitat characters as well as environmental fluctuations seem to prevent either species from excluding the other. Different social organizations of E. grevyi and E. burchelli and the resulting migratory patterns may be adaptations to the environment in their allopatric ranges; in their sympatric range they could alleviate competition. |
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no |
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Equine Behaviour @ team @ |
Serial |
2222 |
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| Author |
Byrne R.W. |
| Title |
The evolution of intelligence |
Type |
Book Chapter |
| Year |
1994 |
Publication |
Behaviour and Evolution |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
223-265 |
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Cambridge University Press |
Place of Publication |
Cambridge,UK |
Editor |
P.J.B. Slater and T.R. Halliday |
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no |
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Equine Behaviour @ team @ |
Serial |
6566 |
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| Author |
Rizhova, L.Y.; Kulagin, D.A. |
| Title |
The effects of corticosteroids on lateral bias in female rats |
Type |
Journal Article |
| Year |
1994 |
Publication |
Behavioural Brain Research |
Abbreviated Journal |
Behav. Brain. Res. |
| Volume |
60 |
Issue |
1 |
Pages |
51-54 |
| Keywords |
Corticosterone; Lateral preference; Estrus cycle; Asymmetry |
| Abstract |
In Experiment 1 female rats were given one trial per day for 8 days in a T-maze, and their initial direction of choice (left/right) was noted. Vaginal smears were also obtained daily. After this some animals were adrenalectomized and given Ringer's solution; others were adrenalectomozed and given hydrocortisone replacement; a third group was sham adrenalectomized, and a fourth group was an intact control. A week after surgery the animals were again tested for 8 days in the T-maze and vaginal smears were obtained. In Experiment 2 rats were subjected to the same surgical treatments as described above and were then tested for 8 days in the T-maze. In Expt. 1 there was no direction bias among the four groups prior to surgery. However, after surgery the Adrenalectomy + Ringer's group showed a significant increase in their rightward choices in the T-maze. This was also found in Expt. 2. Both adrenalectomized groups in Expt. 1 had a significant reduction in the duration of the estrus phase of their cycle. We conclude that corticosterone can affect lateral preference in a T-maze through a mechanism independent of the hormonal changes involved in the estrus cycle. |
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0166-4328 |
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no |
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Equine Behaviour @ team @ |
Serial |
5349 |
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| Author |
Rubenstein, D. I. |
| Title |
The ecology of female social behaviour in horses, zebras and asses |
Type |
Book Chapter |
| Year |
1994 |
Publication |
Animal Societies |
Abbreviated Journal |
Animal Societies |
| Volume |
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Issue |
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Pages |
13-28 |
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Kyoto University Press |
Place of Publication |
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Editor |
Jarman, P.J.;, Rositter, A. |
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ISBN |
4-87698-014-4 |
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Approved |
yes |
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Serial |
1528 |
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