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Author Boinski, S.
Title Dispersal patterns among three species of squirrel monkeys (Saimiri oerstedii, S. boliviensis and S. sciureus): III. Cognition Type Journal Article
Year 2005 Publication (up) Behaviour Abbreviated Journal Behaviour
Volume 142 Issue Pages 679-699
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Notes Approved no
Call Number refbase @ user @ Serial 3509
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Author Rizhova, L.Y.; Kokorina, E.P.
Title Behavioural asymmetry is involved in regulation of autonomic processes: Left side presentation of food improves reproduction and lactation in cows Type Journal Article
Year 2005 Publication (up) Behavioural Brain Research Abbreviated Journal Behav. Brain. Res.
Volume 161 Issue 1 Pages 75-81
Keywords Behavioural asymmetry; Somatic functions; Reproduction; Lactation
Abstract It is known that the right and left brain hemispheres differ in their ability to regulate autonomic processes in the organism. Direct unilateral stimulation of the brain provokes side-dependent endocrine, immune and other visceral reactions. Since brain hemispheres are mainly involved in the regulation of muscles and sensory organs on the contra lateral side of the body the activation of behavioural asymmetry stimulates the contra lateral half of the brain. The important theoretical and practical question of whether autonomic processes can be regulated via the behavioural asymmetry route remains unexplored. In this study, we report that the chronic presentation of an emotionally important stimulus--food--from the left side, improves reproductive performance in animals in a broad range of feeding conditions. The unilateral presentation of food can also influence lactation, but in this case the side-dependent effects are different under varying feeding conditions. This finding opens a simple practical approach to influence basic somatic functions in the organism.
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ISSN 0166-4328 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5348
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Author Zentall, T.R.
Title Timing, memory for intervals, and memory for untimed stimuli: the role of instructional ambiguity Type Journal Article
Year 2005 Publication (up) Behavioural processes Abbreviated Journal Behav. Process.
Volume 70 Issue 3 Pages 209-222
Keywords Animals; *Attention; Columbidae; *Discrimination Learning; *Memory, Short-Term; Practice (Psychology); Reinforcement Schedule; *Retention (Psychology); *Time Perception
Abstract Theories of animal timing have had to account for findings that the memory for the duration of a timed interval appears to be dramatically shorted within a short time of its termination. This finding has led to the subjective shortening hypothesis and it has been proposed to account for the poor memory that animals appear to have for the initial portion of a timed interval when a gap is inserted in the to-be-timed signal. It has also been proposed to account for the poor memory for a relatively long interval that has been discriminated from a shorter interval. I suggest here a simpler account in which ambiguity between the gap or retention interval and the intertrial interval results in resetting the clock, rather than forgetting the interval. The ambiguity hypothesis, together with a signal salience mechanism that determines how quickly the clock is reset at the start of the intertrial interval can account for the results of the reported timing experiments that have used the peak procedure. Furthermore, instructional ambiguity rather than memory loss may account for the results of many animal memory experiments that do not involve memory for time.
Address Department of Psychology, University of Kentucky, 202B Kastle Hall, Lexington, KY 40506-0044, USA. zentall@uky.edu
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ISSN 0376-6357 ISBN Medium
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Notes PMID:16095851 Approved no
Call Number refbase @ user @ Serial 222
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Author Zentall, T.R.
Title Selective and divided attention in animals Type Journal Article
Year 2005 Publication (up) Behavioural processes Abbreviated Journal Behav. Process.
Volume 69 Issue 1 Pages 1-15
Keywords Animals; *Attention; *Behavior, Animal; *Discrimination (Psychology); *Field Dependence-Independence; *Psychological Theory
Abstract This article reviews some of the research on attentional processes in animals. In the traditional approach to selective attention, it is proposed that in addition to specific response attachments, animals also learn something about the dimension along which the stimuli fall (e.g., hue, brightness, or line orientation). More recently, there has been an attempt to find animal analogs to methodologies originally applied to research with humans. One line of research has been directed to the question of whether animals can locate a target among distracters faster if they are prepared for the presentation of the target (search image and priming). In the study of search image, the target is typically a food item and the cue consists of previous trials on which the same target is presented. In research on priming effects, the cue is typically different from the target but is a good predictor of its occurrence. The study of preattentive processes shows that perceptually, certain stimuli stand out from distracters better than others, depending not only on characteristics of the target relative to the distracters, but also on relations among the distracters. Research on divided attention is examined with the goal of determining whether an animal can process two elements of a compound sample with the same efficiency as one. Taken together, the reviewed research indicates that animals are capable of centrally (not just peripherally) attending to selective aspects of a stimulus display.
Address Department of Psychology, University of Kentucky, 202B Kastle Hall, Lexington, KY 40506-0044, USA. Zentall@uky.edu
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ISSN 0376-6357 ISBN Medium
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Notes PMID:15795066 Approved no
Call Number refbase @ user @ Serial 224
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Author Shettleworth, S.J.
Title Taking the best for learning Type Journal Article
Year 2005 Publication (up) Behavioural processes Abbreviated Journal Behav. Process.
Volume 69 Issue 2 Pages 147-9; author reply 159-63
Keywords *Algorithms; Animals; *Behavior, Animal; Decision Making; Evolution; *Learning; *Models, Theoretical
Abstract Examples of how animals learn when multiple, sometimes redundant, cues are present provide further examples not considered by Hutchinson and Gigerenzer that seem to fit the principle of taking the best. “The best” may the most valid cue in the present circumstances; evolution may also produce species-specific biases to use the most functionally relevant cues.
Address Department of Psychology, University of Toronto, Toronto, Ont., Canada M5S 3G3. shettle@psych.utoronto.ca
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Notes PMID:15845301 Approved no
Call Number refbase @ user @ Serial 361
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Author Dunbar, R.I.M.; McAdam, M.R.; O'connell, S.
Title Mental rehearsal in great apes (Pan troglodytes and Pongo pygmaeus) and children Type Journal Article
Year 2005 Publication (up) Behavioural Processes Abbreviated Journal Behav. Process.
Volume 69 Issue 3 Pages 323-330
Keywords Algorithms; Animals; Child; Child, Preschool; Food; Frontal Lobe/anatomy & histology/physiology; Humans; *Imagination; Pan troglodytes; Pongo pygmaeus; Problem Solving/*physiology; Psychomotor Performance/physiology; Reward
Abstract The ability to rehearse possible future courses of action in the mind is an important feature of advanced social cognition in humans, and the “social brain” hypothesis implies that it might also be a feature of primate social cognition. We tested two chimpanzees, six orangutans and 63 children aged 3-7 years on a set of four puzzle boxes, half of which were presented with an opportunity to observe the box before being allowed to open it (“prior view”), the others being given without an opportunity to examine the boxes before handling them (“no prior view”). When learning effects are partialled out, puzzle boxes in the “prior view” condition were opened significantly faster than boxes given in the “no prior view” condition by the children, but not by either of the great apes. The three species differ significantly in the speed with which they opened boxes in the “no prior view” condition. The three species' performance on this task was a function of relative frontal lobe volume, suggesting that it may be possible to identify quantitative neuropsychological differences between species.
Address Evolutionary Psychology Research Group, School of Biological Sciences, University of Liverpool, Biosciences Building, Crown Street, Liverpool L69 7ZB, UK. rimd@liv.ac.uk
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Notes PMID:15896530 Approved no
Call Number Serial 2097
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Author Snycerski, S.; Laraway, S.; Poling, A.
Title Response acquisition with immediate and delayed conditioned reinforcement Type Journal Article
Year 2005 Publication (up) Behavioural Processes Abbreviated Journal Behav. Process.
Volume 68 Issue 1 Pages 1-11
Keywords Response acquisition; Conditioned reinforcement; Delayed reinforcement; Secondary reinforcement; Rats
Abstract Groups comprising eight rats initially were exposed to response-independent water deliveries, then to conditions under which a lever-press response raised an empty dipper immediately or after a resetting delay of 15, 30, or 45 s. When their performance was compared to that of control animals using a 90% confidence level, six rats in the immediate-reinforcement group met the primary criterion for response acquisition during a single 6-h session; 4, 4, and 3 did so in the 15, 30, and 45 s delay groups, respectively. Similar evidence of acquisition was obtained when a 95% confidence level was used. With a 99% confidence level, however, evidence of acquisition was not compelling. Although these data appear to provide the first demonstration of response acquisition in the absence of handshaping or autoshaping under conditions where the putative reinforcer is both conditioned and delayed, they also demonstrate that whether response acquisition occurs depends, in part, on how it is defined.
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Call Number Equine Behaviour @ team @ Serial 3600
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Author Lafferty, K.D.
Title Look what the cat dragged in: do parasites contribute to human cultural diversity? Type Journal Article
Year 2005 Publication (up) Behavioural Processes Abbreviated Journal Behav. Process.
Volume 68 Issue 3 Pages 279-282
Keywords Adaptation, Physiological/physiology; Adaptation, Psychological/physiology; Animals; Behavior/physiology; *Behavior Control; Cats/*parasitology; Cultural Diversity; Host-Parasite Relations; Humans; Personality/*physiology; Toxoplasma/*physiology; Toxoplasmosis/parasitology/*psychology
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Address Western Ecological Research Center, United States Geological Survey, c/o Marine Science Institute, University of California, Santa Barbara, CA 93106, USA. lafferty@lifesci.ucsb.edu
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Notes PMID:15792708 Approved no
Call Number Equine Behaviour @ team @ Serial 4148
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Author Kilian, A.; Fersen, L. von; Güntürkün, O.
Title Left hemispheric advantage for numerical abilities in the bottlenose dolphin Type Journal Article
Year 2005 Publication (up) Behavioural Processes Abbreviated Journal Behav. Process.
Volume 68 Issue 2 Pages 179-184
Keywords Bottlenose dolphin; Hemispheric specialization; Monocular vision; Numerical ability
Abstract In a two-choice discrimination paradigm, a bottlenose dolphin discriminated relational dimensions between visual numerosity stimuli under monocular viewing conditions. After prior binocular acquisition of the task, two monocular test series with different number stimuli were conducted. In accordance with recent studies on visual lateralization in the bottlenose dolphin, our results revealed an overall advantage of the right visual field. Due to the complete decussation of the optic nerve fibers, this suggests a specialization of the left hemisphere for analysing relational features between stimuli as required in tests for numerical abilities. These processes are typically right hemisphere-based in other mammals (including humans) and birds. The present data provide further evidence for a general right visual field advantage in bottlenose dolphins for visual information processing. It is thus assumed that dolphins possess a unique functional architecture of their cerebral asymmetries.
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ISSN 0376-6357 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5366
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Author King, S.R.B.; Gurnell, J.
Title Habitat use and spatial dynamics of takhi introduced to Hustai National Park, Mongolia Type Journal Article
Year 2005 Publication (up) Biological Conservation Abbreviated Journal Biol. Conserva.
Volume 124 Issue 2 Pages 277-290
Keywords Home range; Habitat use; Equus przewalskii; Takhi; Reintroduction
Abstract The successful introduction of captive bred takhi or Przewalski's horse, Equus ferus przewalskii, into Mongolia in the 1990s is a good example of the benefits of ex situ conservation and one of the few examples of the recovery of an animal after it became extinct in the wild. This is also particularly interesting because virtually nothing was known about how takhi lived before they died out, and the introductions have enabled us to study how they have settled, and their ecology and behaviour within their former natural range. In this paper, we describe the movement, home range size and shape, and habitat use of takhi at one of the release areas, the 570 km2 Hustai National Park in Mongolia. Harem home ranges varied between 129 and 2399 ha, with 80% core areas of between 61 and 1196 ha. There was no relationship between range size and harem size, or length of time since release. Initially, harems stayed near their release enclosures, but over time they established home ranges further away. There was little overlap between home ranges of different harems, but neither was there evidence of exclusive range use. The more nutritious vegetation at lower elevations was preferentially selected. Thus the present situation looks good, but, as the population continues to grow, we anticipate that there will be potential problems related to intraspecific competition for water and vegetation resources, and the potential for hybridisation with domestic horses belonging to the local people. We consider the time it may take for takhi to reach carrying capacity within Hustai National Park and emphasise that continual monitoring of the population is essential because interventional management is likely to be required in the future.
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Call Number refbase @ user @ Serial 335
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