Records |
Author |
Heyes, C.; Galef, B.G. (eds) |
Title |
Social learning in animals: the roots of culture |
Type |
Book Whole |
Year |
1996 |
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Publisher |
Academic Press, Inc. |
Place of Publication |
San Diego, CA |
Editor |
Heyes, C. ; Galef, B.G. |
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ISBN |
978-0122739651 |
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Equine Behaviour @ team @ home |
Serial |
2174 |
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Author |
Boysen, S.T.; Bernston, G.G.; Hannan, M.B.; Cacioppo, J.T. |
Title |
Quantity-based interference and symbolic representations in chimpanzees (Pan troglodytes) |
Type |
Journal Article |
Year |
1996 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
Volume |
22 |
Issue |
1 |
Pages |
76-86 |
Keywords |
Animals; Behavior, Animal; Cognition; *Discrimination Learning; Female; Male; *Pan troglodytes; *Reinforcement (Psychology); Task Performance and Analysis |
Abstract |
Five chimpanzees with training in counting and numerical skills selected between 2 arrays of different amounts of candy or 2 Arabic numerals. A reversed reinforcement contingency was in effect, in which the selected array was removed and the subject received the nonselected candies (or the number of candies represented by the nonselected Arabic numeral). Animals were unable to maximize reward by selecting the smaller array when candies were used as array elements. When Arabic numerals were substituted for the candy arrays, all animals showed an immediate shift to a more optimal response strategy of selecting the smaller numeral, thereby receiving the larger reward. Results suggest that a response disposition to the high-incentive candy stimuli introduced a powerful interference effect on performance, which was effectively overridden by the use of symbolic representations. |
Address |
Ohio State University, Department of Psychology, Ohio State University, Columbus 43210-1222, USA |
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English |
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0097-7403 |
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Notes |
PMID:8568498 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2781 |
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Author |
Fetterman, J.G. |
Title |
Dimensions of stimulus complexity |
Type |
Journal Article |
Year |
1996 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
Volume |
22 |
Issue |
1 |
Pages |
3-18 |
Keywords |
Animals; *Behavior, Animal; Cognition; *Learning; Memory; Time Factors |
Abstract |
Animal learning research has increasingly used complex stimuli that approximate natural objects, events, and locations, a trend that has accompanied a resurgence of interest in the role of cognitive factors in learning. Accounts of complex stimulus control have focused mainly on cognitive mechanisms and largely ignored the contribution of stimulus information to perception and memory for complex events. It is argued here that research on animal learning stands to benefit from a more detailed consideration of the stimulus and that James Gibson's stimulus-centered theory of perception serves as a useful framework for analyses of complex stimuli. Several issues in the field of animal learning and cognition are considered from the Gibsonian perspective on stimuli, including the fundamental problem of defining the effective stimulus. |
Address |
Department of Psychology, Indiana University-Purdue University, Indianapolis 46202, USA |
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English |
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0097-7403 |
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PMID:8568494 |
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no |
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Equine Behaviour @ team @ |
Serial |
2782 |
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Author |
Davidsson T.E.; Leonardson L.G.; Marston H.M. |
Title |
Analysis of cognitive function in animals, the value of SDT |
Type |
Journal Article |
Year |
1996 |
Publication |
Cognitive Brain Research |
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Volume |
3 |
Issue |
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Pages |
269-277 |
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no |
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refbase @ user @ |
Serial |
3451 |
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Author |
Gallese, V.; Fadiga, L.; Fogassi, L.; Rizzolatti, G. |
Title |
Action recognition in the premotor cortex |
Type |
Journal Article |
Year |
1996 |
Publication |
Brain |
Abbreviated Journal |
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Volume |
119 |
Issue |
2 |
Pages |
593-609 |
Keywords |
action encoding; visual responses; premotor cortex; macaque monkey |
Abstract |
We recorded electrical activity from 532 neurons in the rostral part of inferior area 6 (area F5) of two macaque monkeys. Previous data had shown that neurons of this area discharge during goal-directed hand and mouth movements. We describe here the properties of a newly discovered set of F5 neurons ( mirror neurons', n = 92) all of which became active both when the monkey performed a given action and when it observed a similar action performed by the experimenter. Mirror neurons, in order to be visually triggered, required an interaction between the agent of the action and the object of it. The sight of the agent alone or of the object alone (three-dimensional objects, food) were ineffective. Hand and the mouth were by far the most effective agents. The actions most represented among those activating mirror neurons were grasping, manipulating and placing. In most mirror neurons (92%) there was a clear relation between the visual action they responded to and the motor response they coded. In [~]30% of mirror neurons the congruence was very strict and the effective observed and executed actions corresponded both in terms of general action (e.g. grasping) and in terms of the way in which that action was executed (e.g. precision grip). We conclude by proposing that mirror neurons form a system for matching observation and execution of motor actions. We discuss the possible role of this system in action recognition and, given the proposed homology between F5 and human Brocca's region, we posit that a matching system, similar to that of mirror neurons exists in humans and could be involved in recognition of actions as well as phonetic gestures. |
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10.1093/brain/119.2.593 |
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Equine Behaviour @ team @ |
Serial |
5012 |
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Author |
Carroll, G.L.; Matthews, N.S.; Hartsfield, S.M.; Slater, M.R.; Champney, T.H.; Erickson, S.W. |
Title |
The effect of detomidine and its antagonism with tolazoline on stress-related hormones, metabolites, physiologic responses, and behavior in awake ponies |
Type |
Journal Article |
Year |
1997 |
Publication |
Veterinary surgery : VS : the official journal of the American College of Veterinary Surgeons |
Abbreviated Journal |
Vet Surg |
Volume |
26 |
Issue |
1 |
Pages |
69-77 |
Keywords |
Adrenergic alpha-Antagonists/administration & dosage/*pharmacology; Animals; Behavior, Animal/drug effects/physiology; Blood Glucose/metabolism; Blood Pressure/drug effects/physiology; Consciousness/physiology; Dose-Response Relationship, Drug; Drug Interactions; Epinephrine/blood; Fatty Acids, Nonesterified/blood; Female; Heart Rate/drug effects/physiology; Horse Diseases/metabolism/physiopathology/psychology; Horses/blood/metabolism/*physiology; Hydrocortisone/blood; Hypnotics and Sedatives/administration & dosage/*pharmacology; Imidazoles/administration & dosage/*pharmacology; Injections, Intravenous; Male; Norepinephrine/blood; Receptors, Adrenergic, alpha/drug effects/*physiology; Stress/metabolism/physiopathology/veterinary; Time Factors; Tolazoline/administration & dosage/*pharmacology |
Abstract |
Six ponies were used to investigate the effect of tolazoline antagonism of detomidine on physiological responses, behavior, epinephrine, norepinephrine, cortisol, glucose, and free fatty acids in awake ponies. Each pony had a catheter inserted into a jugular vein 1 hour before beginning the study. Awake ponies were administered detomidine (0.04 mg/kg intravenously [i.v.]) followed 20 minutes later by either tolazoline (4.0 mg/kg i.v.) or saline. Blood samples were drawn from the catheter 5 minutes before detomidine administration (baseline), 5 minutes after detomidine administration, 20 minutes before detomidine administration which was immediately before the administration of tolazoline or saline (time [T] = 0), and at 5, 30, and 60 minutes after injections of tolazoline or saline (T = 5, 30, and 60 minutes, respectively). Compared with heart rate at T = 0, tolazoline antagonism increased heart rate 45% at 5 minutes. There was no difference in heart rate between treatments at 30 minutes. Blood pressure remained stable after tolazoline, while it decreased over time after saline. Compared with concentrations at T = 0, tolazoline antagonism of detomidine in awake ponies resulted in a 55% increase in cortisol at 30 minutes and a 52% increase in glucose at 5 minutes. The change in free fatty acids was different for tolazoline and saline over time. Free fatty acids decreased after detomidine administration. Free fatty acids did not change after saline administration. After tolazoline administration, free fatty acids increased transiently. Tolazoline tended to decrease sedation and analgesia at 15 and 60 minutes postantagonism. Antagonism of detomidine-induced physiological and behavioral effects with tolazoline in awake ponies that were not experiencing pain appears to precipitate a stress response as measured by cortisol, glucose, and free fatty acids. If antagonism of an alpha-agonist is contemplated, the potential effect on hormones and metabolites should be considered. |
Address |
Department of Small Animal Medicine and Surgery, Texas A&M University, College Station, USA |
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English |
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ISSN |
0161-3499 |
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Notes |
PMID:9123816 |
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no |
Call Number |
refbase @ user @ |
Serial |
96 |
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Author |
Judge, P.G.; De Waa,l F.B.M. |
Title |
Rhesus monkey behaviour under diverse population densities: coping with long-term crowding |
Type |
Journal Article |
Year |
1997 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
Volume |
54 |
Issue |
3 |
Pages |
643-662 |
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Abstract |
A popular view is that high population density promotes behavioural pathology, particularly increased aggression. In contrast, according to a coping model, some primates have behavioural mechanisms (e.g. formal displays, reconciliation and grooming) that regulate social tensions and control the negative consequences of crowding. Seven captive rhesus monkey groups, Macaca mulattawere observed over a wide range of population densities where high-density groups were over 2000 times more crowded than low-density free-ranging groups. As density increased, male rhesus monkeys increased grooming and huddling but did not increase rates of aggression. Females increased all categories of behaviour examined (heavy aggression, mild aggression, formal bared-teeth displays, grooming and huddling), but the increases were not distributed uniformly to all classes of partners. Females increased only grooming, huddling and appeasement displays to males, increased only aggression and huddling with kin and increased all categories of behaviour to non-kin adult females. There were no differences in the percentage of aggressive conflicts reconciled across density conditions. Increased density had different effects on particular relationships. Relationships between females and males were characterized by a coping pattern in which animals modified their behaviour in ways that may decrease aggression under crowded conditions. Female relationships with kin and non-kin were characterized by increases in both aggression and friendly interactions as density increased. The different patterns of response to higher density may reflect different strategies depending on the strength and stability of relationships and the potential consequences if certain relationships are disrupted.1997The Association for the Study of Animal Behaviour |
Address |
Yerkes Regional Primate Research Center and Department of Psychology, Emory University |
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English |
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0003-3472 |
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PMID:9299049 |
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no |
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refbase @ user @ |
Serial |
199 |
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Author |
Lafleur, D.L.; Lozano, G.A.; Sclafani, M. |
Title |
Female mate-choice copying in guppies,Poecilia reticulata: a re-evaluation |
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Journal Article |
Year |
1997 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
Volume |
54 |
Issue |
3 |
Pages |
579-586 |
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Abstract |
It has been argued that intraspecific mate-choice copying can be adaptive under certain conditions. Dugatkin's (1992,Am. Nat.139, 1384-1389) work with guppies,Poecilia reticulataremains the most influential experimental demonstration of this phenomenon. We replicated Dugatkin's work using several choice criteria to ensure that our results were not dependent upon any single method of judging mate choice. We also tested our findings against two null hypotheses of differing stringency. Irrespective of the choice criteria or null hypothesis used, we did not observe any relationship between female mate choice and copying. We conclude that further experimental evidence of female mate-choice copying is required before the existence of this behaviour can be affirmed. |
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refbase @ user @ |
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484 |
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Author |
Castley, J.G.; Knight, M.H. |
Title |
Population status of plains zebra, Equus burchelli, in South African National Parks. |
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Journal Article |
Year |
1997 |
Publication |
Scientific Services, National Parks Board |
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Kimberley, South Africa. |
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Equine Behaviour @ team @ |
Serial |
2254 |
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Author |
Gallup, G.G.J. |
Title |
On the rise and fall of self-conception in primates |
Type |
Journal Article |
Year |
1997 |
Publication |
Annals of the New York Academy of Sciences |
Abbreviated Journal |
Ann N Y Acad Sci |
Volume |
818 |
Issue |
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Pages |
72-82 |
Keywords |
Animals; Phylogeny; Primates/*psychology; *Self Concept |
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Address |
Department of Psychology, State University of New York at Albany 12222, USA |
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0077-8923 |
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PMID:9237466 |
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Equine Behaviour @ team @ |
Serial |
4134 |
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