| Records |
| 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 |
| Abstract |
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Place of Publication |
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| Language |
English |
Summary Language |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0022-2194 |
ISBN |
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Expedition |
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Conference |
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| Notes |
PMID:731119 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
270 |
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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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English |
Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
8750-7587 |
ISBN |
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Medium |
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| Notes |
PMID:15920096 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
3768 |
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| Author |
Boysen, S.T.; Berntson, G.G. |
| Title |
Responses to quantity: perceptual versus cognitive mechanisms in chimpanzees (Pan troglodytes) |
Type |
Journal Article |
| Year |
1995 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
21 |
Issue |
1 |
Pages |
82-86 |
| Keywords |
Animals; Behavior, Animal; Choice Behavior; Cognition/*physiology; Female; *Pan troglodytes; Perception/*physiology; Reinforcement (Psychology); Task Performance and Analysis |
| Abstract |
Two chimpanzees were trained to select among 2 different amounts of candy (1-6 items). The task was designed so that selection of either array by the active (selector) chimpanzee resulted in that array being given to the passive (observer) animal, with the remaining (nonselected) array going to the selector. Neither animal was able to select consistently the smaller array, which would reap the larger reward. Rather, both animals preferentially selected the larger array, thereby receiving the smaller number of reinforcers. When Arabic numerals were substituted for the food arrays, however, the selector animal evidenced more optimal performance, immediately selecting the smaller numeral and thus receiving the larger reward. These findings suggest that a basic predisposition to respond to the perceptual-motivational features of incentive stimuli can interfere with task performance and that this interference can be overridden when abstract symbols serve as choice stimuli. |
| Address |
Comparative Cognition Project, Ohio State University, Columbus 43210-1222 |
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English |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0097-7403 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
PMID:7844508 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2783 |
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| Author |
Stoet, G.; Snyder, L.H. |
| Title |
Task preparation in macaque monkeys ( Macaca mulatta) |
Type |
Journal Article |
| Year |
2003 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
6 |
Issue |
2 |
Pages |
121-130 |
| Keywords |
Animals; *Cognition; Conditioning, Classical; Macaca mulatta/*psychology; Male; Reaction Time; Task Performance and Analysis; Visual Perception |
| Abstract |
We investigated whether macaque monkeys possess the ability to prepare abstract tasks in advance. We trained two monkeys to use different stimulus-response (S-R) mappings. On each trial, monkeys were first informed with a visual cue which of two S-R mapping to use. Following a delay, a visual target was presented to which they would respond with a left or right button-press. We manipulated delay time between cue and target and found that performance was faster and more accurate with longer delays, suggesting that monkeys used the delay time to prepare each task in advance. |
| Address |
Department of Anatomy and Neurobiology, Washington University School of Medicine, 660 S Euclid Ave., Box 8108, St. Louis, MO 63110, USA. stoet@pcg.wustl.edu |
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English |
Summary Language |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
1435-9448 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:12721788 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2572 |
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| Author |
Powers, P.; Harrison, A. |
| Title |
Effects of the rider on the linear kinematics of jumping horses |
Type |
Journal Article |
| Year |
2002 |
Publication |
Sports Biomechanics / International Society of Biomechanics in Sports |
Abbreviated Journal |
Sports Biomech |
| Volume |
1 |
Issue |
2 |
Pages |
135-146 |
| Keywords |
Animals; Behavior, Animal/*physiology; Biomechanics; Communication; Exertion/*physiology; Gait/*physiology; Horses/*physiology; Humans; Locomotion/*physiology; Posture/*physiology; Task Performance and Analysis; Video Recording; Weight-Bearing/*physiology |
| Abstract |
This study examined the effects of the rider on the linear projectile kinematics of show-jumping horses. SVHS video recordings (50 Hz) of eight horses jumping a vertical fence 1 m high were used for the study. Horses jumped the fence under two conditions: loose (no rider or tack) and ridden. Recordings were digitised using Peak Motus. After digitising the sequences, each rider's digitised data were removed from the ridden horse data so that three conditions were examined: loose, ridden (including the rider's data) and riderless (rider's data removed). Repeated measures ANOVA revealed significant differences between ridden and loose conditions for CG height at take-off (p < 0.001), CG distance to the fence at take-off (p = 0.001), maximum CG during the suspension phase (p < 0.001), CG position over the centre of the fence (p < 0.001), CG height at landing (p < 0.001), and vertical velocity at take-off (p < 0.001). The results indicated that the rider's effect on jumping horses was primarily due to behavioural changes in the horses motion (resulting from the rider's instruction), rather than inertial effects (due to the positioning of the rider on the horse). These findings have implications for the coaching of riders and horses. |
| Address |
Department of PE and Sports Sciences, University of Limerick, Limerick, Ireland |
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English |
Summary Language |
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Series Title |
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Series Issue |
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Edition |
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| ISSN |
1476-3141 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:14658371 |
Approved |
no |
| Call Number |
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Serial |
1904 |
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| Author |
Gothard, K.M.; Erickson, C.A.; Amaral, D.G. |
| Title |
How do rhesus monkeys ( Macaca mulatta) scan faces in a visual paired comparison task? |
Type |
Journal Article |
| Year |
2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
7 |
Issue |
1 |
Pages |
25-36 |
| Keywords |
Animals; Eye Movements/*physiology; *Facial Expression; Macaca mulatta/*physiology; Male; Pattern Recognition, Visual/*physiology; *Task Performance and Analysis |
| Abstract |
When novel and familiar faces are viewed simultaneously, humans and monkeys show a preference for looking at the novel face. The facial features attended to in familiar and novel faces, were determined by analyzing the visual exploration patterns, or scanpaths, of four monkeys performing a visual paired comparison task. In this task, the viewer was first familiarized with an image and then it was presented simultaneously with a novel and the familiar image. A looking preference for the novel image indicated that the viewer recognized the familiar image and hence differentiates between the familiar and the novel images. Scanpaths and relative looking preference were compared for four types of images: (1) familiar and novel objects, (2) familiar and novel monkey faces with neutral expressions, (3) familiar and novel inverted monkey faces, and (4) faces from the same monkey with different facial expressions. Looking time was significantly longer for the novel face, whether it was neutral, expressing an emotion, or inverted. Monkeys did not show a preference, or an aversion, for looking at aggressive or affiliative facial expressions. The analysis of scanpaths indicated that the eyes were the most explored facial feature in all faces. When faces expressed emotions such as a fear grimace, then monkeys scanned features of the face, which contributed to the uniqueness of the expression. Inverted facial images were scanned similarly to upright images. Precise measurement of eye movements during the visual paired comparison task, allowed a novel and more quantitative assessment of the perceptual processes involved the spontaneous visual exploration of faces and facial expressions. These studies indicate that non-human primates carry out the visual analysis of complex images such as faces in a characteristic and quantifiable manner. |
| Address |
Department of Psychiatry, University of California Davis, 2230 Stokton Blvd., Sacramento, CA 95817, USA. kgothard@email.arizona.edu |
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English |
Summary Language |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
1435-9448 |
ISBN |
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Medium |
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Conference |
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| Notes |
PMID:14745584 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2545 |
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| 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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English |
Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
1435-9448 |
ISBN |
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Conference |
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| Notes |
PMID:12884077 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2563 |
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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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English |
Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
1435-9448 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:12838395 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2564 |
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| Author |
Zentall, T.R.; Sherburne, L.M. |
| Title |
Role of differential sample responding in the differential outcomes effect involving delayed matching by pigeons |
Type |
Journal Article |
| Year |
1994 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
20 |
Issue |
4 |
Pages |
390-401 |
| Keywords |
Animals; Behavior, Animal; Choice Behavior; *Columbidae; *Discrimination Learning; Feeding Behavior; Task Performance and Analysis |
| Abstract |
The role of differential sample responding in the differential outcomes effect was examined. In Experiment 1, we trained pigeons on a one-to-many matching task with differential sample responding required. Differential outcomes were associated with samples and comparisons, with comparisons only, or with neither samples nor comparisons. Slopes of delay functions for trials with pecked versus nonpecked samples suggested use of a single-code-default strategy in the nondifferential-outcomes group but not in the differential-outcomes groups. In Experiment 2, differential sample responding and differential outcomes were manipulated independently. Again, there were significant differences in the relative slopes of the delay functions. Results suggest that differential outcomes exert their effect independently of differential sample responding. |
| Address |
Department of Psychology, University of Kentucky, Lexington 40506 |
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Place of Publication |
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English |
Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0097-7403 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:7964521 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
257 |
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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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English |
Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0033-2909 |
ISBN |
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Expedition |
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Conference |
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| Notes |
PMID:8316612 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
259 |
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