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Author |
Beran, M.J.; Smith, J.D.; Redford, J.S.; Washburn, D.A. |
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Title |
Rhesus macaques (Macaca mulatta) monitor uncertainty during numerosity judgments |
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Journal Article |
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Year |
2006 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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Volume |
32 |
Issue |
2 |
Pages |
111-119 |
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Keywords |
Animals; *Cognition; *Judgment; Macaca mulatta/*psychology; Male; Mathematics; *Pattern Recognition, Visual; *Uncertainty |
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Abstract |
Two rhesus macaques (Macaca mulatta) judged arrays of dots on a computer screen as having more or fewer dots than a center value that was never presented in trials. After learning a center value, monkeys were given an uncertainty response that let them decline to make the numerosity judgment on that trial. Across center values (3-7), errors occurred most often for sets adjacent in numerosity to the center value. The monkeys also used the uncertainty response most frequently on these difficult trials. A 2nd experiment showed that monkeys' responses reflected numerical magnitude and not the surface-area illumination of the displays. This research shows that monkeys' uncertainty-monitoring capacity extends to the domain of numerical cognition. It also shows monkeys' use of the purest uncertainty response possible, uncontaminated by any secondary motivator. |
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Language Research Center, Georgia State University, Atlanta, 30302, USA. mjberan@yahoo.com |
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0097-7403 |
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PMID:16634654 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2762 |
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Author |
Brannon, E.M.; Cantlon, J.F.; Terrace, H.S. |
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Title |
The role of reference points in ordinal numerical comparisons by rhesus macaques (Macaca mulatta) |
Type |
Journal Article |
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Year |
2006 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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Volume |
32 |
Issue |
2 |
Pages |
120-134 |
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Keywords |
Animals; *Cognition; *Discrimination (Psychology); *Generalization (Psychology); Macaca mulatta/*psychology; Male; Mathematics; *Pattern Recognition, Visual |
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Abstract |
Two experiments examined ordinal numerical knowledge in rhesus macaques (Macaca mulatta). Experiment 1 replicated the finding (E. M. Brannon & H. S. Terrace, 2000) that monkeys trained to respond in descending numerical order (4-->3-->2-->1) did not generalize the descending rule to the novel values 5-9 in contrast to monkeys trained to respond in ascending order. Experiment 2 examined whether the failure to generalize a descending rule was due to the direction of the training sequence or to the specific values used in the training sequence. Results implicated 3 factors that characterize a monkey's numerical comparison process: Weber's law, knowledge of ordinal direction, and a comparison of each value in a test pair with the reference point established by the first value of the training sequence. |
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Center for Cognitive Neuroscience and Department of Psychological and Brain Sciences, Duke University, Durham, NC 27708, USA. brannon@duke.edu |
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0097-7403 |
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PMID:16634655 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2761 |
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Author |
Washburn, D.A.; Smith, J.D.; Shields, W.E. |
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Title |
Rhesus monkeys (Macaca mulatta) immediately generalize the uncertain response |
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Journal Article |
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Year |
2006 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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Volume |
32 |
Issue |
2 |
Pages |
185-189 |
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Keywords |
Adaptation, Psychological; Animals; *Cognition; *Discrimination Learning; *Generalization (Psychology); Macaca mulatta/*psychology; Male; *Uncertainty |
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Abstract |
Rhesus monkeys (Macaca mulatta) have learned, like humans, to use an uncertain response adaptively under test conditions that create uncertainty, suggesting a metacognitive process by which human and nonhuman primates may monitor their confidence and alter their behavior accordingly. In this study, 4 rhesus monkeys generalized their use of the uncertain response, without additional training, to 2 familiar tasks (2-choice discrimination learning and mirror-image matching to sample) that predictably and demonstrably produce uncertainty. The monkeys were significantly less likely to use the uncertain response on trials in which the answer might be known. These results indicate that monkeys, like humans, know when they do not know and that they can learn to use a symbol as a generalized means for indicating their uncertainty. |
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Department of Psychology, Georgia State University, Atlanta, 30303, USA. dwashhburn@gsu.edu |
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0097-7403 |
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PMID:16634662 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2760 |
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Author |
Pere, M.C. |
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Title |
Maternal and fetal blood levels of glucose, lactate, fructose, and insulin in the conscious pig |
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Journal Article |
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Year |
1995 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
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Volume |
73 |
Issue |
10 |
Pages |
2994-2999 |
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Keywords |
Animals; Blood Glucose/*analysis; Catheterization/methods/veterinary; Consciousness/physiology; Female; Fetal Blood/*chemistry; Fructose/analysis/*blood; Insulin/analysis/*blood; Lactates/analysis/*blood; Pregnancy; Swine/*blood/physiology |
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To study nutrition and metabolism in the fetal pig, a chronic catheterization method was developed that allows blood sampling in arteries and veins, at both the umbilical and uterine sources, in the conscious, unstressed animal. A catheter was inserted in the fetal aorta through a femoral artery, and another one was introduced in the umbilical vein. A catheter was put in a femoral artery of the sow so that its end was in the abdominal aorta. A fourth catheter was placed in a uterine vein draining the fetoplacental unit studied. This procedure was applied to 18 Large White primiparous sows at 99 d of gestation. Blood samples were drawn simultaneously using the four catheters before a meal at 103 d of pregnancy, and glucose, insulin, lactate, and fructose were determinated. Glycemia was 2.5 times higher in the sow than in the fetus. The extraction coefficient of glucose by the fetus amounted to 14% of the umbilical supply. The insulin level in the fetal pig was very low ( < 5 microU/mL). Lactate and fructose seemed to originate from the placenta. Blood lactate was 2.6 times lower in the sow than in the fetus, and its extraction coefficient by the fetus amounted to 8%. Fructose in the fetal blood was 2.3 times higher than that of glucose. Fructose was not utilized by the pig fetus. The present results obtained in the fetal pig are comparable to the conclusions drawn from studies with other species. |
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Station de Recherches Porcines, Institut National de la Recherche Agronomique, Saint-Gilles, France |
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0021-8812 |
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Notes |
PMID:8617670 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2751 |
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Author |
Schmidt, R.; Amrhein, V.; Kunc, H.P.; Naguib, M. |
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Title |
The day after: effects of vocal interactions on territory defence in nightingales |
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Journal Article |
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Year |
2007 |
Publication |
The Journal of Animal Ecology |
Abbreviated Journal |
T. J. Anim. Ecol. |
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Volume |
76 |
Issue |
1 |
Pages |
168-173 |
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Keywords |
Aggression; Animals; Male; Songbirds/*physiology; *Territoriality; Time Factors; Vocalization, Animal/*physiology |
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Abstract |
1. Models on territory acquisition and tenure predict that territorial animals benefit by adjusting territorial defence behaviour to previous challenges they had experienced within the socially complex environment of communication networks. 2. Here, we addressed such issues of social cognition by investigating persisting effects of vocal contests on territory defence behaviour in nightingales Luscinia megarhynchos (Brehm). 3. Using interactive playback during nocturnal song of subjects, a rival was simulated to countersing either aggressively (by song overlapping) or moderately (by song alternating) from outside the subjects' territory. Thereby, the time-specific singing strategy provided an experimentally controlled source of information on the motivation of an unfamiliar rival. 4. Expecting that nightingales integrate information with time, the same rival was simulated to return as a moderately singing intruder on the following morning. 5. The results show that the vigour with which male nightingales responded to the simulated intrusion of an opponent during the day depended on the nature of the nocturnal vocal interaction experienced several hours before. 6. Males that had received the song overlapping playback the preceding night approached the simulated intruder more quickly and closer and sang more songs near the loudspeaker than did males that had received a song alternating playback. 7. This adjustment of territory defence strategies depending on information from prior signalling experience suggests that integrating information with time plays an important part in territory defence by affecting a male's decision making in a communication network. |
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Department of Animal Behaviour, Bielefeld University, PO Box 100 131, D-33501 Bielefeld, Germany. rouven.schmidt@uni-bielefeld.de |
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0021-8790 |
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PMID:17184365 |
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Equine Behaviour @ team @ |
Serial |
2749 |
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Author |
[No authors listed] |
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Title |
International Conference on Environmental Cadmium: an overview |
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Conference Article |
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Year |
1979 |
Publication |
Environmental Health Perspectives |
Abbreviated Journal |
Environ Health Perspect |
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28 |
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297-30 |
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Animals; Cadmium/*toxicity; Cadmium Poisoning/metabolism; Congresses; Ecology; Environmental Exposure; Environmental Pollutants/*toxicity; Female; Forecasting; Haplorhini; Horses; Humans; Rats; Waste Disposal, Fluid |
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0091-6765 |
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PMID:39745 |
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Equine Behaviour @ team @ |
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2694 |
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Author |
Menges, R.W.; Furcolow, M.L.; Selby, L.A.; Habermann, R.T.; Smith, C.D. |
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Title |
Ecologic studies of histoplasmosis |
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Journal Article |
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Year |
1967 |
Publication |
American Journal of Epidemiology |
Abbreviated Journal |
Am J Epidemiol |
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Volume |
85 |
Issue |
1 |
Pages |
108-119 |
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Keywords |
Adolescent; Adult; Animals; Antibodies/*analysis; Carnivora; Cats; Cattle; Child; Child, Preschool; Dogs; Ecology; Female; Fluorescent Antibody Technique; Histoplasma/isolation & purification; Histoplasmin; Histoplasmosis/*epidemiology/*immunology; Horses; Humans; Infant; Infant, Newborn; Kansas; Male; Marsupialia; Mice; Middle Aged; Missouri; Rabbits; Skin Tests; *Soil Microbiology; Swine |
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0002-9262 |
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PMID:5334640 |
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Equine Behaviour @ team @ |
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2747 |
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Author |
Shalaby, A.M. |
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Title |
Host-preference observations on Anopheles culicifacies (Diptera: Culicidae) in Gujarat State, India |
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Journal Article |
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Year |
1969 |
Publication |
Annals of the Entomological Society of America |
Abbreviated Journal |
Ann Entomol Soc Am |
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Volume |
62 |
Issue |
6 |
Pages |
1270-1273 |
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Keywords |
Animals; *Anopheles; Cattle; *Ddt; Dogs; Ecology; Female; Goats; Horses; Humans; India; *Insect Vectors; *Insecticide Resistance; Precipitin Tests; Sheep |
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0013-8746 |
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PMID:5374165 |
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Equine Behaviour @ team @ |
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2739 |
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Author |
Nelson, G.S. |
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Title |
Onchocerciasis |
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Journal Article |
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Year |
1970 |
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Advances in Parasitology |
Abbreviated Journal |
Adv Parasitol |
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8 |
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173-224 |
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Keywords |
Africa; Animals; Anthelmintics/therapeutic use; Artiodactyla; Blindness/etiology; Cattle; Circadian Rhythm; Ddt; Diethylcarbamazine/therapeutic use; Diptera/anatomy & histology/growth & development; Dwarfism/etiology; Ecology; Eye/pathology; Feeding Behavior; Female; Geography; Haplorhini; Hernia, Femoral/etiology; Horses; Humans; Insect Vectors/growth & development; Larva/growth & development; Male; Onchocerca/classification/growth & development; *Onchocerciasis/diagnosis/drug therapy/epidemiology/immunology/pathology/prevention & control/veterinary; Primates; Serologic Tests; Skin/pathology; Skin Tests; Suramin/therapeutic use |
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0065-308X |
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PMID:4997515 |
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Equine Behaviour @ team @ |
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2738 |
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Author |
Manning, G.S.; Ratanarat, C. |
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Title |
Fasciolopsis buski (Lankester, 1857) in Thailand |
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Journal Article |
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Year |
1970 |
Publication |
The American Journal of Tropical Medicine and Hygiene |
Abbreviated Journal |
Am J Trop Med Hyg |
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Volume |
19 |
Issue |
4 |
Pages |
613-619 |
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Keywords |
Adolescent; Adult; Aged; Animals; Buffaloes; Cattle; Child; Child, Preschool; *Disease Reservoirs; Dogs; Ecology; *Fasciolidae; Feces; Female; Health Surveys; Horses; Humans; Infant; Infant, Newborn; Male; Middle Aged; *Plants, Edible; Sex Factors; *Snails; Swine; Thailand; Trematode Infections/*epidemiology |
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0002-9637 |
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PMID:5425498 |
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Equine Behaviour @ team @ |
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2734 |
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