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Santos LR; Hauser MD; Spelke ES |
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Title |
Recognition and categorization of biologically significant objects by rhesus monkeys (Macaca mulatta): the domain of food |
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2001 |
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Cognition |
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82 |
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127 |
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Equine Behaviour @ team @ |
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3073 |
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Author |
Wittling, W.; Pflüger, M. |
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Title |
Neuroendocrine hemisphere asymmetries: Salivary cortisol secretion during lateralized viewing of emotion-related and neutral films |
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1990 |
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Brain and Cognition |
Abbreviated Journal |
Brain Cogn. |
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14 |
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2 |
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243-265 |
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The study set out to examine whether the cerebral hemispheres differ in their ability to regulate cortisol secretion during emotion-related situations. One hundred twenty-three adult subjects were shown either an emotionally aversive or a neutral film in the left or right hemisphere by means of a technique for lateralizing visual input that allows prolonged viewing while permitting free ocular scanning. The film-related changes of cortisol secretion were determined by salivary cortisol radioimmunoassay. Right hemispheric viewing of the emotionally aversive film resulted in a significantly higher increase of cortisol secretion than left hemispheric viewing of the same film. No such differences were observed with respect to the neutral film. Comparing the effects of the two films separately for each hemisphere revealed that only the right hemisphere was able to respond neuroendocrinologically in a different manner to the emotional and the neutral film. Therefore, it is concluded that cortical regulation of cortisol secretion in emotion-related situations is under primary control of the right hemisphere. The potential implications of asymmetric control of cortisol secretion with respect to the pathogenesis of psychosomatic and immunological disorders are discussed. |
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0278-2626 |
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Equine Behaviour @ team @ |
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5350 |
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Sato, W.; Aoki, S. |
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Title |
Right hemispheric dominance in processing of unconscious negative emotion |
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2006 |
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Brain and Cognition |
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62 |
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3 |
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261-266 |
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Right hemispheric dominance; Unconscious negative emotion; Subliminal affective priming; Emotional facial expressions |
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Right hemispheric dominance in unconscious emotional processing has been suggested, but remains controversial. This issue was investigated using the subliminal affective priming paradigm combined with unilateral visual presentation in 40 normal subjects. In either left or right visual fields, angry facial expressions, happy facial expressions, or plain gray images were briefly presented as negative, positive, and control primes, followed by a mosaic mask. Then nonsense target ideographs were presented, and the subjects evaluated their partiality toward the targets. When the stimuli were presented in the left, but not the right, visual fields, the negative primes reduced the subjects' liking for the targets, relative to the case of the positive or control primes. These results provided behavioral evidence supporting the hypothesis that the right hemisphere is dominant for unconscious negative emotional processing. |
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Equine Behaviour @ team @ |
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4638 |
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Harris, L.J.; Almerigi, J.B.; Carbary, T.J.; Fogel, T.G. |
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Title |
Left-side infant holding: A test of the hemispheric arousal -attentional hypothesis |
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Journal Article |
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Year |
2001 |
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Brain and Cognition |
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46 |
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1-2 |
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159-165 |
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When asked to hold a young infant in their arms, most adults hold on the left side (Harris, 1997). In a prior study, we found the same bias when we asked adults merely to imagine holding an infant in their arms (Harris, Almerigi, & Kirsch, 1999). It has been hypothesized that the left-side bias is the product of right-hemisphere arousal accompanying certain aspects of the act, causing attention to be driven to the contralateral, or left, side of personal space. Left-side holding, whether actual or imagined, thus would be consistent with the direction to which the holder's attention has been endogenously directed. We tested this hypothesis by giving 250 college students the “imagine-holding” task and then, as an independent measure of lateralized hemispheric arousal, a 34-item Chimeric Faces Test (CFT). On the “imagine” test, a significant majority reported a left-side hold, and, on the CFT, left-side holders had a significantly stronger left-hemispace bias than right-side holders, although both left- and right- side holders had left-hemispace CFT biases. The results thus support the attentional-arousal hypothesis but indicate that other factors are contributing as well. |
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0278-2626 |
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Equine Behaviour @ team @ |
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5344 |
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Wittling, W.; Block, A.; Schweiger, E.; Genzel, S. |
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Title |
Hemisphere Asymmetry in Sympathetic Control of the Human Myocardium |
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Journal Article |
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Year |
1998 |
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Brain and Cognition |
Abbreviated Journal |
Brain Cogn. |
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38 |
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1 |
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17-35 |
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Hemisphere asymmetry in sympathetic control of myocardial performance was studied in healthy human subjects using lateralized film presentation for selective sensory stimulation of the hemispheres and impedance cardiography for the evaluation of cardiac output, systolic time intervals and myocardial contractility. Results revealed a clear and consistent right hemisphere predominance in sympathetically mediated control of various components of myocardial performance. There is reason to assume that the obtained hemisphere differences in autonomic control of the heart are self-reliant processes not depending on emotion-related hemisphere asymmetry. As far as we know, this is the first study examining the distinct roles of the cerebral hemispheres in neural control of ventricular myocardial functions. |
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Equine Behaviour @ team @ |
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5351 |
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Dyer, F.C. |
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Title |
Spatial Cognition: Lessons from Central-place Foraging Insects |
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1998 |
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Animal Cognition in Nature |
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119-154 |
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Summary Spatial orientation has played an extremely important role in the development of ideas about the behavioral capacities of animals. Indeed, as the modern scientific study of animal behavior emerged from its roots in zoology and experimental psychology, studies of spatial orientation figured in the work of many of the pioneering researchers, including Tinbergen (), von ), Watson () and . |
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Academic Press |
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London |
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Russell P. Balda; Irene M. Pepperberg; Alan C. Kamil |
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9780120770304 |
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Equine Behaviour @ team @ |
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2913 |
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Author |
Smith, W.J. |
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Title |
Cognitive Implications of an Information-sharing Model of Animal Communication |
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1998 |
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Animal Cognition in Nature |
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227-243 |
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Summary In social communication, one animal signals and another responds. Several cognitive steps are involved as the second animal selects its responses; these steps can be described as follows in terms of an informational model. First, the responding individual must evaluate the information made available by the signaling on the basis of other information, available from sources contextual to the signal. Second, the respondent must fit all of the relevant information into patterns generated from recall of past events (conscious recall is not generally required; pattern fitting is a fundamental skill). Third, conditional predictions must be made; and fourth, the individual must test and modify any of these predictions for which significant consequences exist. Many vertebrate animals appear to respond to signaling with considerable flexibility. Communicative events are thus complex but are by no means intractable. Indeed, communication provides us with excellent opportunities to investigate animal cognition. |
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Academic Press |
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London |
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Russell P. Balda; Irene M. Pepperberg; Alan C. Kamil |
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9780120770304 |
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Equine Behaviour @ team @ |
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2914 |
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Author |
Beer, C.G. |
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Title |
Varying Views of Animal and Human Cognition |
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1998 |
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Animal Cognition in Nature |
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435-456 |
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Summary In this chapter I want to stand back from the splendid empirical work on animal cognitive capacities that is the focus of this book, and look at the broader context of cognitive concerns within which the work can be viewed. Indeed even the term `cognitive ethology' currently connotes and denotes more than is represented here, as other collections of articles, such as and , exemplify. I include the current descendants of behavioristic learning theory, evolutionary epistemology, evolutionary psychology and the recent comparative turn that has been taken in cognitive science. These several approaches, despite their considerable overlap, often appear independent and even ignorant of one another. Like the proverbial blind men feeling the hide of an elephant, they touch hands from time to time, yet collectively have only a piecemeal and distributed understanding of the shape of the whole. Although each approach may indeed need the space to work out its own conceptual and methodological preoccupations without confounding interference from other views, a utopian spirit envisages an ultimate coming together, a more comprehensive realization of the synthetic approach to animal cognition that is this book's theme. |
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Academic Press |
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London |
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Russell P. Balda; Irene M. Pepperberg; Alan C. Kamil |
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9780120770304 |
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Equine Behaviour @ team @ |
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2915 |
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Author |
Kamil, A.C. |
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Title |
On the Proper Definition of Cognitive Ethology |
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1998 |
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Animal Cognition in Nature |
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1-28 |
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Summary The last 20-30 years have seen two `scientific revolutions' in the study of animal behavior: the cognitive revolution that originated in psychology, and the Darwinian, behavioral ecology revolution that originated in biology. Among psychologists, the cognitive revolution has had enormous impact. Similarly, among biologists, the Darwinian revolution has had enormous impact. The major theme of this chapter is that these two scientific research programs need to be combined into a single approach, simultaneously cognitive and Darwinian, and that this single approach is most appropriately called cognitive ethology. |
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Academic Press |
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London |
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Russell P. Balda; Irene M. Pepperberg; Alan C. Kamil |
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Equine Behaviour @ team @ |
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4202 |
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Paukner, A.; Anderson, J.R.; Fujita, K. |
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Title |
Redundant food searches by capuchin monkeys (Cebus apella): a failure of metacognition? |
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2006 |
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Animal cognition |
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Anim. Cogn. |
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9 |
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2 |
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110-117 |
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Animals; *Appetitive Behavior; Cebus; *Concept Formation; Female; Male; Pattern Recognition, Visual; *Problem Solving; *Visual Perception |
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This study investigated capuchin monkeys' understanding of their own visual search behavior as a means to gather information. Five monkeys were presented with three tubes that could be visually searched to determine the location of a bait. The bait's visibility was experimentally manipulated, and the monkeys' spontaneous visual searches before tube selection were analyzed. In Experiment 1, three monkeys selected the baited tube significantly above chance; however, the monkeys also searched transparent tubes. In Experiment 2, a bent tube in which food was never visible was introduced. When the bent tube was baited, the monkeys failed to deduce the bait location and responded randomly. They also continued to look into the bent tube despite not gaining any pertinent information from it. The capuchin monkeys' behavior contrasts with the efficient employment of visual search behavior reported in humans, apes and macaques. This difference is consistent with species-related variations in metacognitive abilities, although other explanations are also possible. |
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Department of Psychology, University of Stirling, Stirling, FK9 4LA, UK. ap14@stir.ac.uk |
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1435-9448 |
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PMID:16184375 |
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Admin @ knut @ |
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15 |
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