| Records |
| Author |
Henning, J.M.; Zentall, T.R. |
| Title |
Imitation, social facilitation, and the effects of ACTH 4-10 on rats' bar-pressing behavior |
Type |
Journal Article |
| Year |
1981 |
Publication |
The American journal of psychology |
Abbreviated Journal |
Am J Psychol |
Volume  |
94 |
Issue |
1 |
Pages |
125-134 |
| Keywords |
Adrenocorticotropic Hormone/*pharmacology; Animals; Conditioning, Operant/*drug effects; Dose-Response Relationship, Drug; Extinction, Psychological/drug effects; Imitative Behavior/*drug effects; Male; Peptide Fragments/*pharmacology; Rats; *Social Facilitation |
| Abstract |
The effects of ACTH 4-10 on rats' imitation learning was examined during the acquisition and extinction of a bar-press response for water reinforcement. Rats were exposed to either a bar-pressing conspecific (OB), an experimentally naive conspecific (ON), or an empty box (OE) during bar-press acquisition. In a factorial design, each rat was then exposed to one of the same three conditions during extinction. An 80 mcg dose of ACTH 4-10 was administered to half of the rats in each group prior to observation. Performance differences during acquisition were generally small, but significant performance differences during extinction were found. Social facilitation was indicated by the finding that rats extinguished in the presence of a conspecific exhibited significantly greater resistance to extinction than rats extinguished in the presence of an empty box. An imitation effect was also found. Rats that observed a bar-pressing conspecific during both acquisition and extinction (group OB-OB) showed significantly greater resistance top extinction than did groups OB-ON, CB-OE, or OE-OE. There were no significant effects of the hormone, however, relative to saline controls. |
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English |
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| ISSN |
0002-9556 |
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| Notes |
PMID:6263117 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
267 |
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| Author |
Saigo, S. |
| Title |
A transient spin-state change during alkaline isomerization of ferricytochrome c |
Type |
Journal Article |
| Year |
1981 |
Publication |
Journal of Biochemistry |
Abbreviated Journal |
J Biochem (Tokyo) |
| Volume |
89 |
Issue |
6 |
Pages |
1977-1980 |
| Keywords |
Animals; *Cytochrome c Group; Horses; Hydrogen-Ion Concentration; Isomerism; Kinetics; Myocardium/enzymology; Oxidation-Reduction; Spectrophotometry |
| Abstract |
Kinetic difference spectra during the alkaline isomerization of ferricytochrome c were obtained by the pH-jump method in the range of 540 to 655 nm. The spectrum of the transient intermediate, which appears during the course of the isomerization, was reproduced from the spectra. The intermediate showed an intense absorption band at 600 nm, indicating that it is a high spin or mixed spin species. This is in contrast to the stable neutral and alkaline forms which are low spin species. The transient spin-state change during the isomerization was also observed upon rapid oxidation of ferrocytochrome c at alkaline pH. |
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0021-924X |
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| Notes |
PMID:6270075 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
3808 |
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| Author |
Beaver, B.V. |
| Title |
Problems & values associated with dominance |
Type |
Journal Article |
| Year |
1981 |
Publication |
Veterinary medicine, small animal clinician : VM, SAC |
Abbreviated Journal |
Vet Med Small Anim Clin |
| Volume |
76 |
Issue |
8 |
Pages |
1129-1131 |
| Keywords |
Animals; *Animals, Domestic; *Behavior, Animal; Cats; Cattle; Dogs; Horses; *Social Dominance; Swine |
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| ISSN |
0042-4889 |
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| Notes |
PMID:6914851 |
Approved |
no |
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refbase @ user @ |
Serial |
678 |
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| Author |
Beaver Bv, |
| Title |
Maternal behavior in mares |
Type |
Journal Article |
| Year |
1981 |
Publication |
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Abbreviated Journal |
Vet Med Small Anim Clin |
| Volume |
76 |
Issue |
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Pages |
315-317 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
| Call Number |
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Serial |
924 |
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| Author |
TURNER JR JW et al, |
| Title |
Elimination marking behavior in feral horses |
Type |
Journal Article |
| Year |
1981 |
Publication |
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Abbreviated Journal |
Can J Zool |
| Volume |
59 |
Issue |
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Pages |
1561-1566 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
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Serial |
1666 |
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| Author |
Miller, R. |
| Title |
Male aggression, dominance and breeding behaviour in Red Desert feral horses |
Type |
Journal Article |
| Year |
1981 |
Publication |
Zeitschrift fur Tierpsychologie |
Abbreviated Journal |
Z. Tierpsychol. |
| Volume |
57 |
Issue |
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Pages |
340-201 |
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no |
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Equine Behaviour @ team @ |
Serial |
2374 |
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| Author |
Heird, J.C.; Lennon, A.M.; Bell, R.W. |
| Title |
Effects of early experience on the learning ability of yearling horses |
Type |
Journal Article |
| Year |
1981 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
| Volume |
53 |
Issue |
5 |
Pages |
1204-1209 |
| Keywords |
Animals; Conditioning (Psychology); Female; *Handling (Psychology); Horses/*physiology; *Learning |
| Abstract |
Twenty-four yearling Quarter Horse fillies were divided into three groups (I) very limited handling, (II) intermediate handling and (III) extensive handling. At about 14 months of age, each horse was preconditioned for 2 weeks and then run in a simple place-learning T-maze test in which it had to locate its feed. Thirty trials were run daily for 20 days, with the location of the feed changed each day. To retire from the maze, a horse had to meet the criterion: 11 correct responses in 12 tries, with the last eight being consecutive. Horses in Group II required the fewest trials to reach criterion. These horses also learned more and had the highest percentage of correct responses (P less than .05). Mean trainability tended to predict learning ability; however, trainability and trials to criterion were not significantly correlated. Mean emotionality scores indicated a tendency for horses in the intermediately handled group to be less emotional than those in Group I or III. Results indicated that horses with an intermediate amount of handling scored higher on an intermediate test of learning. All handled horses scored higher on learning tests than those not handled. |
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0021-8812 |
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| Notes |
PMID:7319966 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
3577 |
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| Author |
McCall, C.A.; Potter, G.D.; Friend, T.H.; Ingram, R.S. |
| Title |
Learning abilities in yearling horses using the Hebb-Williams closed field maze |
Type |
Journal Article |
| Year |
1981 |
Publication |
J. Anim. Sci. |
Abbreviated Journal |
J. Anim. Sci. |
| Volume |
53 |
Issue |
4 |
Pages |
928-933 |
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| Notes |
Cited By (since 1996): 9; Export Date: 24 October 2008 |
Approved |
no |
| Call Number |
Admin @ knut @ |
Serial |
4613 |
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| Author |
Kaseda Y, |
| Title |
The structure of the groups of Misaki horses in Toi Cape |
Type |
Journal Article |
| Year |
1981 |
Publication |
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Abbreviated Journal |
Jpn. J Zootech Sci |
| Volume |
52 |
Issue |
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Pages |
227-235 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
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Serial |
1233 |
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| Author |
R. A. J. Taylor |
| Title |
The Behavioural Basis of Redistribution I. The Delta -Model Concept |
Type |
Journal Article |
| Year |
1981 |
Publication |
The Journal of Animal Ecology |
Abbreviated Journal |
T. J. Anim. Ecol. |
| Volume |
50 |
Issue |
2 |
Pages |
573-586 |
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| Abstract |
(1) A conceptual model is developed in which spatial behaviour is density-dependent. The behaviour is classified as congregatory or migratory according to whether it results in movement towards or away from population concentrations. (2) Spatial behaviour is shown to result from both individual and population interactions. (3) The stability properties of the model are explored and it is shown how, under particular conditions, populations obeying the model have a population density regulating mechanism. (4) The similarity between the model and the potential energy curve of physics is noted, but it is emphasized that this is a behavioural not a physical model. |
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no |
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refbase @ user @ |
Serial |
720 |
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