| Home | << 1 2 3 4 5 6 7 8 9 10 >> [11–17] |
|
| Records | |||||
|---|---|---|---|---|---|
| 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 | ||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1435-9448 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:12721788 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 2572 | ||
| Permanent link to this record | |||||
| Author | Novacek, M.J. | ||||
| Title | Mammalian phylogeny: shaking the tree | Type | Journal Article | ||
| Year | 1992 | Publication | Nature | Abbreviated Journal | Nature |
| Volume | 356 | Issue | 6365 | Pages |
121-125 |
| Keywords | Animals; Evolution; Fossils; Mammals/classification/*genetics; *Phylogeny | ||||
| Abstract | Recent palaeontological discoveries and the correspondence between molecular and morphological results provide fresh insight on the deep structure of mammalian phylogeny. This new wave of research, however, has yet to resolve some important issues. | ||||
| Address | American Museum of Natural History, New York 10024 | ||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0028-0836 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:1545862 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 3546 | ||
| Permanent link to this record | |||||
| Author | Trim, C.M.; Moore, J.N.; Clark, E.S. | ||||
| Title | Renal effects of dopamine infusion in conscious horses | Type | Journal Article | ||
| Year | 1989 | Publication | Equine veterinary journal. Supplement | Abbreviated Journal | Equine Vet J Suppl |
| Volume | Issue | 7 | Pages |
124-128 | |
| Keywords | Animals; Blood Pressure/drug effects/physiology; Consciousness/*physiology; Creatinine/blood; Dopamine/administration & dosage/*pharmacology; Dose-Response Relationship, Drug; Female; Heart Rate/drug effects/physiology; Horses/*physiology; Infusions, Intravenous/veterinary; Kidney/blood supply/*drug effects/physiology; Osmolar Concentration; Potassium/blood; Random Allocation; Regional Blood Flow/drug effects/physiology; Renal Artery/drug effects/physiology/ultrasonography; Sodium/blood; Time Factors; Ultrasonography/methods/veterinary; Urination/physiology | ||||
| Abstract | An ultrasonic flow probe was implanted around a branch of the left renal artery in five horses. The effects of dopamine were studied in the unsedated horses 10 days after surgery. Three experiments, separated by at least two days, were performed in random order on each horse. In two experiments, dopamine was infused intravenously for 60 mins at either 2.5 and 5.0 micrograms/kg bodyweight (bwt)/min. Saline was infused for 60 mins before and after each infusion, and for 180 mins in the third experiment as a control. Renal blood flow increased during administration of dopamine at both dose rates (P = 0.0001). Urine volume increased (P = 0.055), and osmolality decreased (P < 0.05), with infusion of dopamine at 5.0 micrograms/kg bwt/min. Arterial blood pressure and heart rate were not significantly affected. Fractional excretions of sodium and potassium were not significantly changed with dopamine infusion. The higher dopamine dose rate was accompanied by dysrhythmias in some horses. | ||||
| Address | Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens 30602, USA | ||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | ISBN | Medium | |||
| Area | Expedition | Conference | |||
| Notes | PMID:9118094 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 99 | ||
| Permanent link to this record | |||||
| Author | Moehlman, P.D. | ||||
| Title | Behavioral patterns and communication in feral asses (Equus africanus) | Type | Journal Article | ||
| Year | 1998 | Publication | Applied Animal Behaviour Science | Abbreviated Journal | Appl. Anim. Behav. Sci. |
| Volume | 60 | Issue | 2-3 | Pages |
125-169 |
| Keywords | Equids; Feral asses; Behavior patterns; Facial expressions; Postures; Locomotion | ||||
| Abstract | The behavior of feral populations of the African wild ass (Equus africanus) were studied in the Northern Panamint Range of Death Valley National Monument for 20 months from 1970 to 1973 [Moehlman, P.D., 1974. Behavior and ecology of feral asses (Equus asinus). PhD dissertation, University of Wisconsin, Madison, 251 pp.; Moehlman, P.D., 1979. Behavior and ecology of feral asses (Equus asinus). Natl. Geogr. Soc. Res. Reports, 1970: 405-411]. Maintenance behavior is described and behavior sequences that were used in social interactions are quantified by sex and age class. Agonistic, sexual, and greeting behavior patterns are described and analyzed in conjunction with the responses they elicited. Mutual grooming mainly occurred between adult males, and between females and their offspring. Five types of vocalizations were distinguished: brays, grunts, growls, snorts, and whuffles. A second population was studied for 1 month on Ossabaw Island, GA (Moehlman, 1979). This population had more permanent social groups and had a higher rate of mutual grooming and foal social play. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | ISBN | Medium | |||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 2381 | ||
| Permanent link to this record | |||||
| Author | Yamazaki, Y.; Shinohara, N.; Watanabe, S. | ||||
| Title | Visual discrimination of normal and drug induced behavior in quails (Coturnix coturnix japonica) | Type | Journal Article | ||
| Year | 2004 | Publication | Animal Cognition | Abbreviated Journal | Anim. Cogn. |
| Volume | 7 | Issue | 2 | Pages |
128-132 |
| Keywords | Animals; Behavior, Animal/*drug effects; Classification; Coturnix/*physiology; *Discrimination Learning; *Generalization (Psychology); Ketamine/pharmacology; Male; Methamphetamine/pharmacology; *Pattern Recognition, Visual; Video Recording; Visual Perception | ||||
| Abstract | The ability to discriminate the physical states of others could be an adaptive behavior, especially for social animals. For example, the ability to discriminate illness behavior would be helpful for avoiding spoiled foods. We report on an experiment with Japanese quails testing whether these birds can discriminate the physical states of conspecifics. The quails were trained to discriminate between moving video images of quails injected with psychoactive drugs and those in a normal (not injected) condition. Methamphetamine (stimulant) or ketamine (anesthetic) were used to produce drug-induced behaviors in conspecifics. The former induced hyperactive behavior and the latter hypoactive behavior. The subject quails could learn the discrimination and showed generalization to novel images of the drug-induced behaviors. They did not, however, show discriminative behavior according to the type and dosage of the drugs. Thus, they categorized the behavior not on the basis of degree of activity, but on the basis of abnormality. | ||||
| Address | Biopsychologie, Institut fur Kognitive Neurowissenschaft, Fakultat fur Psychologie, Ruhr-Universitat Bochum, 44780 Bochum, Germany. yumyam@bio.psy.ruhr-uni-bochum.de | ||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1435-9448 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:15069613 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 2527 | ||
| Permanent link to this record | |||||
| Author | Zentall, T.R.; Klein, E.D.; Singer, R.A. | ||||
| Title | Evidence for detection of one duration sample and default responding to other duration samples by pigeons may result from an artifact of retention-test ambiguity | Type | Journal Article | ||
| Year | 2004 | Publication | Journal of experimental psychology. Animal behavior processes | Abbreviated Journal | J Exp Psychol Anim Behav Process |
| Volume | 30 | Issue | 2 | Pages |
129-134 |
| Keywords | Animals; Artifacts; Association Learning; Columbidae; *Discrimination Learning; *Recognition (Psychology); *Retention (Psychology); *Time Perception; *Transfer (Psychology) | ||||
| Abstract | S. C. Gaitan and J. T. Wixted (2000) proposed that when pigeons are trained on a conditional discrimination to associate 1 duration sample with 1 comparison and 2 other duration samples with a 2nd comparison, they detect only the single duration, and on trials involving either of the 2 other duration samples, they respond to the other comparison by default. In 2 experiments, the authors show instead that pigeons lend to treat the retention intervals (such as those used by Gaitan and Wixted) as intertrial intervals, and thus, they tend to treat all trials with a delay as 0-s sample trials. The authors tested this hypothesis by showing that divergent retention functions do not appear when the retention interval is discriminably different from the intertrial interval. | ||||
| Address | Department of Psychology, University of Kentucky, Lexington, KY 40506-0044, USA. zentall@uky.edu | ||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0097-7403 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:15078122 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 232 | ||
| Permanent link to this record | |||||
| Author | Werner, C.W.; Tiemann, I.; Cnotka, J.; Rehkamper, G. | ||||
| Title | Do chickens (Gallus gallus f. domestica) decompose visual figures? | Type | Journal Article | ||
| Year | 2005 | Publication | Animal Cognition | Abbreviated Journal | Anim. Cogn. |
| Volume | 8 | Issue | 2 | Pages |
129-140 |
| Keywords | Animals; *Chickens; Conditioning, Classical; *Discrimination Learning; Female; *Pattern Recognition, Visual; Photic Stimulation; *Visual Perception | ||||
| Abstract | To investigate whether learning to discriminate between visual compound stimuli depends on decomposing them into constituting features, hens were first trained to discriminate four features (red, green, horizontal, vertical) from two dimensions (colour, line orientation). After acquisition, hens were trained with compound stimuli made up from these dimensions in two ways: a separable (line on a coloured background) stimulus and an integral one (coloured line). This compound training included a reversal of reinforcement of only one of the two dimensions (half-reversal). After having achieved the compound stimulus discrimination, a second dimensional training identical to the first was performed. Finally, in the second compound training the other dimension was reversed. Two major results were found: (1) an interaction between the dimension reversed and the type of compound stimulus: in compound training with colour reversal, separable compound stimuli were discriminated worse than integral compounds and vice versa in compound training with line orientation reversed. (2) Performance in the second compound training was worse than in the first one. The first result points to a similar mode of processing for separable and integral compounds, whereas the second result shows that the whole stimulus is psychologically superior to its constituting features. Experiment 2 repeated experiment 1 using line orientation stimuli of reversed line and background brightness. Nevertheless, the results were similar to experiment 1. Results are discussed in the framework of a configural exemplar theory of discrimination that assumes the representation of the whole stimulus situation combined with transfer based on a measure of overall similarity. | ||||
| Address | C. and O. Vogt Institute of Brain Research, Heinrich Heine University Dusseldorf, Universitatsstr. 1, 40225, Dusseldorf, Germany. wernerc@uni-duesseldorf.de | ||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1435-9448 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:15490291 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 2503 | ||
| Permanent link to this record | |||||
| Author | Graf, P.; Schneider, T.; KönigvonBorstel, U.; Gauly M. | ||||
| Title | Kosten-Nutzen-Analyse einer objektivierten Temperamentbeurteilung bei Pferden [Economic evaluation of an objective temperament assessment in horses] | Type | Journal Article | ||
| Year | 2013 | Publication | Züchtungskunde | Abbreviated Journal | |
| Volume | 85 | Issue | 2 | Pages |
129-142 |
| Keywords | Kosten, Nutzen, Interieurbeurteilung, Pferd, Temperament [Economy, personality assessment, horse, temperament] | ||||
| Abstract | Das Ziel der vorliegenden Studie war die Ermittlung der Kosten eines Verhaltenstests zur objektiven Temperamentbeurteilung. Sie wurde an 1028 Pferden auf 55 Zuchtveranstaltungen und Privatbetrieben ermittelt. Weiterhin wurde eine Befragung zur allgemeinen Akzeptanz einer solchen Beurteilung bei Reitpferden durchgeführt. Zusätzlich wurde mit Hilfe einer Online-Umfrage die Meinung zu den Kosten und dem Aufwand einer solchen Beurteilung ermittelt. Die Kosten der Einführung einer objektiven Temperamentbeurteilung entsprechen nach Einbeziehung aller Faktoren ca. 18 Euro je Pferd. Den Kosten steht die Zahlungsbereitschaft für eine verbesserte, da objektivierte Temperamentbeurteilung gegenüber. Insgesamt 56,7% der Befragten wären bereit, mehr als 11 Euro für eine objektive Interieurbeurteilung auf Leistungsprüfungen im Feld zu investieren. Im Rahmen von Stationsprüfungen wären sie sogar bereit mehr als 30 Euro aufzuwenden. Die Wertsteigerung eines im Rahmen des Verfahrens positiv bewerteten Pferdes um 5%, die von den Teilnehmern der Umfrage durchschnittlich angenommen wird, würde zusätzlich den Gewinn beim Pferdeverkauf steigern. Die Ergebnisse zeigen, dass die Kosten einer objektiven Temperamentbeurteilung durch eine erhöhte Zahlungsbereitschaft der Käufer scheinbar kompensiert werden können, so dass die Einführung eines Temperamenttests zur objektiven Interieurbeurteilung in Form der vorgestellten Untersuchungen grundsätzlich finanzierbar ist. [The aim of the present study was to assess costs as well as riders’ acceptance of an objective temperament evaluation in riding horses. Costs were determined based on a novel object test conducted in 1028 horses tested on 65 occasions during performance tests or in private stables. In addition, an online survey was used to identify riders’ opinion about the costs and benefits of such an assessment. Based on the conditions assumed in the present study the costs for temperament testing have amount 18 Euro per horse. More than 50% of the respondents were willing to pay more than 11 Euro for an objective temperament assessment in their horses during performance tests in field. Within performance tests on station they would spend more than 30 Euro for an objective temperament assessment. Participants further assumed a rise in value of favourably assessed horses by 5%, leading to increased profits when selling the horse. In conclusion, riders appear to be willing to cover the additional costs accrued from the temperament test. Therefore, the introduction of an objective temperament assessment is likely to pay off.] |
||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0044-5401 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5866 | ||
| Permanent link to this record | |||||
| Author | Church, D.L.; Plowright, C.M.S. | ||||
| Title | Spatial encoding by bumblebees (Bombus impatiens) of a reward within an artificial flower array | Type | Journal Article | ||
| Year | 2006 | Publication | Animal Cognition | Abbreviated Journal | Anim. Cogn. |
| Volume | 9 | Issue | 2 | Pages |
131-140 |
| Keywords | Animals; Appetitive Behavior/physiology; Association Learning/*physiology; Bees/*physiology; Chi-Square Distribution; *Cues; Female; Memory/physiology; Reward; Space Perception/*physiology; Spatial Behavior/*physiology | ||||
| Abstract | We presented bumblebees a spatial memory task similar to that used with other species (e.g., cats, dogs, and pigeons). In some conditions we allowed for presence of scent marks in addition to placing local and global spatial cues in conflict. Bumblebees (Bombus impatiens) were presented an array of artificial flowers within a flight cage, one flower offering reward (S+), while the others were empty (S-). Bees were tested with empty flowers. In Experiment 1, flowers were either moved at the time of testing or not. Bees returned to the flower in the same absolute position of the S+ (the flower-array-independent (FAI) position), even if it was in the wrong position relative to the S- and even when new flower covers prevented the use of possible scent marks. New flower covers (i.e., without possible scent marks) had the effect of lowering the frequency of probing behavior. In Experiment 2, the colony was moved between training and testing. Again, bees chose the flower in the FAI position of the S+, and not the flower that would be chosen using strictly memory for a flight vector. Together, these experiments show that to locate the S+ bees did not rely on scent marks nor the positions of the S-, though the S- were prominent objects close to the goal. Also, bees selected environmental features to remember the position of the S+ instead of relying upon a purely egocentric point of view. Similarities with honeybees and vertebrates are discussed, as well as possible encoding mechanisms. | ||||
| Address | Psychology Department, Bag Service #45444, University of New Brunswick, Fredericton, NB, E3B 6E4, Canada. dchurchl@unb.ca | ||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1435-9448 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:16416106 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 2474 | ||
| Permanent link to this record | |||||
| Author | Zentall, T.R. | ||||
| Title | Configural/holistic processing or differential element versus compound similarity | Type | Journal Article | ||
| Year | 2005 | Publication | Animal cognition | Abbreviated Journal | Anim. Cogn. |
| Volume | 8 | Issue | 2 | Pages |
141-142 |
| Keywords | Animals; *Chickens; Conditioning, Classical; *Discrimination Learning; Female; *Pattern Recognition, Visual; Photic Stimulation; *Visual Perception | ||||
| Abstract | Before accepting a configural or holistic account of visual perception, one should be sure that an analytic (elemental) account does not provide an equal or better explanation of the results. I suggest that when one forms a compound of a color and a line orientation with one element previously trained as an S+ and the other as an S-, the resulting transfer found will depend on the relative salience of the two elements, and most important, the similarity of the compound to each of the training stimuli. Thus, if a line orientation is placed on a colored background (a separable compound), it will appear more like the colored field used in training, and color will control responding. However, if the line itself is colored (an integral compound), the compound will appear more like the line used in training, and line orientation will control responding. Not only does this account do a better job of explaining the data but it is simpler and it is testable. | ||||
| Address | Department of Psychology, University of Kentucky, Lexington, KY 40506-0044, USA. zentall@uky.edu | ||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1435-9448 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:15449103 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 229 | ||
| Permanent link to this record | |||||