Records |
Author |
Leighty, K.A.; Fragaszy, D.M. |
Title |
Primates in cyberspace: using interactive computer tasks to study perception and action in nonhuman animals |
Type |
Journal Article |
Year |
2003 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
6 |
Issue |
3 |
Pages |
137-139 |
Keywords |
Animals; *Perception; *Primates; *Task Performance and Analysis; *User-Computer Interface |
Abstract |
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Address |
Department of Psychology, University of Georgia, Athens, GA 30602-3013, USA. kleighty@uga.edu |
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1435-9448 |
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Notes |
PMID:12884077 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2563 |
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Author |
Zentall, S.S.; Zentall, T.R.; Barack, R.C. |
Title |
Distraction as a function of within-task stimulation for hyperactive and normal children |
Type |
Journal Article |
Year |
1978 |
Publication |
Journal of learning disabilities |
Abbreviated Journal |
J Learn Disabil |
Volume |
11 |
Issue |
9 |
Pages |
540-548 |
Keywords |
*Attention; Child; Child, Preschool; Color Perception; Female; Humans; Hyperkinesis/*psychology; Male; Motor Skills; *Task Performance and Analysis; Visual Perception |
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ISSN |
0022-2194 |
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Notes |
PMID:731119 |
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no |
Call Number |
refbase @ user @ |
Serial |
270 |
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Author |
Leighty, K.A.; Fragaszy, D.M. |
Title |
Joystick acquisition in tufted capuchins (Cebus apella) |
Type |
Journal Article |
Year |
2003 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
6 |
Issue |
3 |
Pages |
141-148 |
Keywords |
Animals; Cebus/*physiology; *Computer Peripherals; Functional Laterality; Male; *Task Performance and Analysis; *User-Computer Interface |
Abstract |
A number of nonhuman primate species have demonstrated the ability to use a joystick to control a cursor on a computer screen, yet the acquisition of this skill has not been the focus of systematic inquiry. Here, we examined joystick acquisition in four tufted capuchins under two directional relationships of joystick movement and resultant cursor displacement, isomorphic and inverted. To document the natural history of the acquisition of this skill, we recorded the development of visual tracking of the cursor and body tilting. Rates of acquisition were comparable between the two conditions. After mastering the task in one condition, subjects remastered the task at an accelerated rate in the opposing condition. All subjects significantly increased or maintained high proportions of cursor tracking throughout acquisition. All subjects demonstrated a postural tilt while moving the cursor from the mid-phase of acquisition through task mastery. In the isomorphic condition, all subjects tilted significantly more often in the direction of goal location than in the opposite direction. In three of the four series of tilting that were scored for subjects in the inverted condition, tilting occurred significantly more often toward the direction of goal location than the direction of required hand movement. Together these findings suggest that body tilting participates in the organization of directional movement of the cursor rather than reflecting merely the motoric requirements of the task (to manipulate a joystick). |
Address |
Department of Psychology, University of Georgia, Athens, GA 30602-3013, USA. kleighty@uga.edu |
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1435-9448 |
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Notes |
PMID:12838395 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2564 |
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Author |
Young, L.E.; Rogers, K.; Wood, J.L.N. |
Title |
Left ventricular size and systolic function in Thoroughbred racehorses and their relationships to race performance |
Type |
Journal Article |
Year |
2005 |
Publication |
Journal of Applied Physiology (Bethesda, Md. : 1985) |
Abbreviated Journal |
J Appl Physiol |
Volume |
99 |
Issue |
4 |
Pages |
1278-1285 |
Keywords |
*Adaptation, Physiological; Aging/physiology; Animal Husbandry; Animals; *Echocardiography; Female; Heart/*physiology; Heart Ventricles; Horses/*physiology; Male; *Physical Conditioning, Animal; Running/*physiology; Stroke Volume; Systole; Task Performance and Analysis |
Abstract |
Cardiac morphology in human athletes is known to differ, depending on the sports-specific endurance component of their events, whereas anecdotes abound about superlative athletes with large hearts. As the heart determines stroke volume and maximum O(2) uptake in mammals, we undertook a study to test the hypothesis that the morphology of the equine heart would differ between trained horses, depending on race type, and that left ventricular size would be greatest in elite performers. Echocardiography was performed in 482 race-fit Thoroughbreds engaged in either flat (1,000-2,500 m) or jump racing (3,200-6,400 m). Body weight and sex-adjusted measures of left ventricular size were largest in horses engaged in jump racing over fixed fences, compared with horses running shorter distances on the flat (range 8-16%). The observed differences in cardiac morphologies suggest that subtle differences in training and competition result in cardiac adaptations that are appropriate to the endurance component of the horses' event. Derived left ventricular mass was strongly associated with published rating (quality) in horses racing over longer distances in jump races (P < or = 0.001), but less so for horses in flat races. Rather, left ventricular ejection fraction and left ventricular mass combined were positively associated with race rating in older flat racehorses running over sprint (<1,408 m) and longer distances (>1,408 m), explaining 25-35% of overall variation in performance, as well as being closely associated with performance in longer races over jumps (23%). These data provide the first direct evidence that cardiac size influences athletic performance in a group of mammalian running athletes. |
Address |
Centre for Equine Studies, Animal Health Trust, Newmarket, Suffolk, UK. lesley.young@aht.org.uk |
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ISSN |
8750-7587 |
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Notes |
PMID:15920096 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
3768 |
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Author |
Beran, M.J.; Pate, J.L.; Washburn, D.A.; Rumbaugh, D.M. |
Title |
Sequential responding and planning in chimpanzees (Pan troglodytes) and rhesus macaques (Macaca mulatta) |
Type |
Journal Article |
Year |
2004 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
Volume |
30 |
Issue |
3 |
Pages |
203-212 |
Keywords |
Animals; *Cognition; Female; Goals; Learning; Macaca mulatta/*psychology; Male; *Mathematics; Pan troglodytes/*psychology; Task Performance and Analysis |
Abstract |
Chimpanzees (Pan troglodytes) and rhesus macaques (Macaca mulatta) selected either Arabic numerals or colored squares on a computer monitor in a learned sequence. On shift trials, the locations of 2 stimuli were interchanged at some point. More errors were made when this interchange occurred for the next 2 stimuli to be selected than when the interchange was for stimuli later in the sequence. On mask trials, all remaining stimuli were occluded after the 1st selection. Performance exceeded chance levels for only 1 selection after these masks were applied. There was no difference in performance for either stimulus type (numerals or colors). The data indicated that the animals planned only the next selection during these computerized tasks as opposed to planning the entire response sequence. |
Address |
Language Research Center, Georgia State University, Atlanta 30303, USA. mjberan@yahoo.com |
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ISSN |
0097-7403 |
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Notes |
PMID:15279511 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2767 |
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Author |
Roper, K.L.; Zentall, T.R. |
Title |
Directed forgetting in animals |
Type |
Journal Article |
Year |
1993 |
Publication |
Psychological bulletin |
Abbreviated Journal |
Psychol Bull |
Volume |
113 |
Issue |
3 |
Pages |
513-532 |
Keywords |
Animals; Behavior, Animal; *Cognition; Columbidae; Conditioning (Psychology); Discrimination Learning; Female; Humans; Male; Memory Disorders/*psychology; Reinforcement (Psychology); Task Performance and Analysis |
Abstract |
Directed-forgetting research with animals suggests that animals show disrupted test performance only under certain conditions. Important variables are (a) whether during training, the cue to forget (F cue) signals nonreward (i.e., that the trial is over) versus reward (i.e., that reinforcement can be obtained) and (b) given that reinforcement can be obtained on F-cue trials, whether the post-F-cue response pattern is compatible with the baseline memory task. It is proposed that some findings of directed forgetting can be attributed to trained response biases, whereas others may be attributable perhaps to frustration-produced interference. It is suggested that directed forgetting in animals should be studied using procedures similar to those used to study directed forgetting in humans. This can be accomplished by presenting, within a trial, both to-be-remembered and to-be-forgotten material. |
Address |
Department of Psychology, University of Kentucky, Lexington 40506 |
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ISSN |
0033-2909 |
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Notes |
PMID:8316612 |
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no |
Call Number |
refbase @ user @ |
Serial |
259 |
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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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0097-7403 |
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PMID:8568498 |
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no |
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Equine Behaviour @ team @ |
Serial |
2781 |
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Author |
Vonk, J. |
Title |
Gorilla ( Gorilla gorilla gorilla) and orangutan ( Pongo abelii) understanding of first- and second-order relations |
Type |
Journal Article |
Year |
2003 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
6 |
Issue |
2 |
Pages |
77-86 |
Keywords |
Animals; *Cognition; Color Perception; Female; Gorilla gorilla/*psychology; Male; Pongo pygmaeus/*psychology; Task Performance and Analysis |
Abstract |
Four orangutans and one gorilla matched images in a delayed matching-to-sample (DMTS) task based on the relationship between items depicted in those images, thus demonstrating understanding of both first- and second-order relations. Subjects matched items on the basis of identity, color, or shape (first-order relations, experiment 1) or same shape, same color between items (second-order relations, experiment 2). Four of the five subjects performed above chance on the second-order relations DMTS task within the first block of five sessions. High levels of performance on this task did not result from reliance on perceptual feature matching and thus indicate the capability for abstract relational concepts in two species of great ape. |
Address |
York University, 4700 Keele Street,Toronto, ON M3J 1P3, Canada. jxv9592@louisiana.edu |
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1435-9448 |
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PMID:12687418 |
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no |
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Equine Behaviour @ team @ |
Serial |
2578 |
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Author |
Collier-Baker, E.; Davis, J.M.; Nielsen, M.; Suddendorf, T. |
Title |
Do chimpanzees (Pan troglodytes) understand single invisible displacement? |
Type |
Journal Article |
Year |
2006 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
9 |
Issue |
1 |
Pages |
55-61 |
Keywords |
Animals; Behavior, Animal; *Cognition; Male; Pan troglodytes/*psychology; *Space Perception; *Spatial Behavior; Task Performance and Analysis; *Visual Perception |
Abstract |
Previous research suggests that chimpanzees understand single invisible displacement. However, this Piagetian task may be solvable through the use of simple search strategies rather than through mentally representing the past trajectory of an object. Four control conditions were thus administered to two chimpanzees in order to separate associative search strategies from performance based on mental representation. Strategies involving experimenter cue-use, search at the last or first box visited by the displacement device, and search at boxes adjacent to the displacement device were systematically controlled for. Chimpanzees showed no indications of utilizing these simple strategies, suggesting that their capacity to mentally represent single invisible displacements is comparable to that of 18-24-month-old children. |
Address |
Early Cognitive Development Unit, School of Psychology, University of Queensland, Brisbane, Queensland 4072, Australia. e.collier-baker@psy.uq.edu.au |
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1435-9448 |
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PMID:16163481 |
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no |
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Equine Behaviour @ team @ |
Serial |
2482 |
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Author |
Roitberg, E.; Franz, H. |
Title |
Oddity learning by African dwarf goats ( Capra hircus) |
Type |
Journal Article |
Year |
2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
7 |
Issue |
1 |
Pages |
61-67 |
Keywords |
Animals; *Cues; Female; Goats/*physiology; *Pattern Recognition, Visual; *Task Performance and Analysis |
Abstract |
Seventeen African dwarf goats (adult females) were trained on oddity tasks using an automated learning device. One odd stimulus and three identical nonodd stimuli were presented on a screen divided into four sectors; the sector for the odd stimulus was varied pseudorandomly. Responses to the odd stimulus were deemed to be correct and were reinforced with food. In phase 1, the goats were trained on eight stimulus configurations. From trial to trial the odd discriminandum was either a + symbol or the letter S, and the nonodd discriminandum was the symbol not used as the odd one. In phase 2, the animals were similarly trained using an unfilled triangle or a filled (i.e., solid black) circle. In phase 3, three new discriminanda were used, an unfilled, small circle with radiating lines, an unfilled heart-shaped symbol, and an unfilled oval; which of the three discriminanda was odd and nonodd was varied from trial to trial. Following these training phases, a transfer test was given, which involved 24 new discriminanda sets. These were presented twice for a total of 48 transfer test trials. Results early in training showed approximately 25% correct, which might be expected by chance in a four-choice task. After 500-2,000 trials, results improved to approximately 40-44% correct. The best-performing subject reached 60-80% correct during training. On the transfer test, this subject had 47.9% correct and that significantly exceeded 25% expected by chance. This finding suggests that some exceptional individuals of African dwarf goats are capable of learning the oddity concept. |
Address |
Forschungsinstitut fur die Biologie landwirtschaftlicher Nutztiere, Wilhelm-Stahl-Allee 2, D-18196 Dummerstorf, Germany. Roitberg@fbn-dummerstorf.de |
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1435-9448 |
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PMID:13680403 |
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Equine Behaviour @ team @ |
Serial |
2554 |
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