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Author Li, W.; Howard, J.D.; Parrish, T.B.; Gottfried, J.A.
Title Aversive Learning Enhances Perceptual and Cortical Discrimination of Indiscriminable Odor Cues Type Journal Article
Year 2008 Publication Science Abbreviated Journal Science
Volume 319 Issue 5871 Pages (up) 1842-1845
Keywords
Abstract Learning to associate sensory cues with threats is critical for minimizing aversive experience. The ecological benefit of associative learning relies on accurate perception of predictive cues, but how aversive learning enhances perceptual acuity of sensory signals, particularly in humans, is unclear. We combined multivariate functional magnetic resonance imaging with olfactory psychophysics to show that initially indistinguishable odor enantiomers (mirror-image molecules) become discriminable after aversive conditioning, paralleling the spatial divergence of ensemble activity patterns in primary olfactory (piriform) cortex. Our findings indicate that aversive learning induces piriform plasticity with corresponding gains in odor enantiomer discrimination, underscoring the capacity of fear conditioning to update perceptual representation of predictive cues, over and above its well-recognized role in the acquisition of conditioned responses. That completely indiscriminable sensations can be transformed into discriminable percepts further accentuates the potency of associative learning to enhance sensory cue perception and support adaptive behavior.
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Notes 10.1126/science.1152837 Approved no
Call Number Equine Behaviour @ team @ Serial 4408
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Author Li, W.; Howard, J.D.; Parrish, T.B.; Gottfried, J.A.
Title Supporting Online Material to: Aversive Learning Enhances Perceptual and Cortical Discrimination of Indiscriminable Odor Cues Type Miscellaneous
Year 2008 Publication Science Abbreviated Journal Science
Volume 319 Issue 5871 Pages (up) 1842-1845
Keywords
Abstract Learning to associate sensory cues with threats is critical for minimizing aversive experience. The ecological benefit of associative learning relies on accurate perception of predictive cues, but how aversive learning enhances perceptual acuity of sensory signals, particularly in humans, is unclear. We combined multivariate functional magnetic resonance imaging with olfactory psychophysics to show that initially indistinguishable odor enantiomers (mirror-image molecules) become discriminable after aversive conditioning, paralleling the spatial divergence of ensemble activity patterns in primary olfactory (piriform) cortex. Our findings indicate that aversive learning induces piriform plasticity with corresponding gains in odor enantiomer discrimination, underscoring the capacity of fear conditioning to update perceptual representation of predictive cues, over and above its well-recognized role in the acquisition of conditioned responses. That completely indiscriminable sensations can be transformed into discriminable percepts further accentuates the potency of associative learning to enhance sensory cue perception and support adaptive behavior.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
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Notes 10.1126/science.1152837 Approved no
Call Number Equine Behaviour @ team @ Serial 4409
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Author Kerr, R.A.
Title PALEOCLIMATOLOGY. Atlantic mud shows how melting ice triggered an ancient chill Type Journal Article
Year 2006 Publication Science (New York, N.Y.) Abbreviated Journal Science
Volume 312 Issue 5782 Pages (up) 1860
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Language English Summary Language Original Title
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ISSN 1095-9203 ISBN Medium
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Notes PMID:16809498 Approved no
Call Number refbase @ user @ Serial 283
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Author Miller, G.
Title Animal behavior. Signs of empathy seen in mice Type Journal Article
Year 2006 Publication Science (New York, N.Y.) Abbreviated Journal Science
Volume 312 Issue 5782 Pages (up) 1860-1861
Keywords Altruism; Animals; Behavior, Animal; *Empathy; Formaldehyde/administration & dosage; Mice/*psychology; Motivation; Pain/*psychology; *Social Behavior
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ISSN 1095-9203 ISBN Medium
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Notes PMID:16809499 Approved no
Call Number refbase @ user @ Serial 461
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Author Emery, N.J.; Clayton, N.S.
Title The Mentality of Crows: Convergent Evolution of Intelligence in Corvids and Apes Type Journal Article
Year 2004 Publication Science Abbreviated Journal Science
Volume 306 Issue 5703 Pages (up) 1903-1907
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Abstract Discussions of the evolution of intelligence have focused on monkeys and apes because of their close evolutionary relationship to humans. Other large-brained social animals, such as corvids, also understand their physical and social worlds. Here we review recent studies of tool manufacture, mental time travel, and social cognition in corvids, and suggest that complex cognition depends on a “tool kit” consisting of causal reasoning, flexibility, imagination, and prospection. Because corvids and apes share these cognitive tools, we argue that complex cognitive abilities evolved multiple times in distantly related species with vastly different brain structures in order to solve similar socioecological problems.
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Notes 10.1126/science.1098410 Approved no
Call Number Equine Behaviour @ team @ Serial 2959
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Author Pennisi, E.
Title Are out primate cousins 'conscious'? Type
Year 1999 Publication Science (New York, N.Y.) Abbreviated Journal Science
Volume 284 Issue 5423 Pages (up) 2073-2076
Keywords Animals; *Behavior, Animal; Cebus; *Consciousness; Empathy; Humans; Instinct; Intelligence; Learning; *Mental Processes; Pan troglodytes; *Primates
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Language English Summary Language Original Title
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ISSN 0036-8075 ISBN Medium
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Notes PMID:10409060 Approved no
Call Number Equine Behaviour @ team @ Serial 2843
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Author Clutton-Brock, T.H.; Russell, A.F.; Sharpe, L.L.; Brotherton, P.N.; McIlrath, G.M.; White, S.; Cameron, E.Z.
Title Effects of helpers on juvenile development and survival in meerkats Type Journal Article
Year 2001 Publication Science (New York, N.Y.) Abbreviated Journal Science
Volume 293 Issue 5539 Pages (up) 2446-2449
Keywords Animals; Breeding; Carnivora/growth & development/*physiology; *Cooperative Behavior; Feeding Behavior; Female; Male; Survival Rate; *Weight Gain
Abstract Although breeding success is known to increase with group size in several cooperative mammals, the mechanisms underlying these relationships are uncertain. We show that in wild groups of cooperative meerkats, Suricata suricatta, reductions in the ratio of helpers to pups depress the daily weight gain and growth of pups and the daily weight gain of helpers. Increases in the daily weight gain of pups are associated with heavier weights at independence and at 1 year of age, as well as with improved foraging success as juveniles and higher survival rates through the first year of life. These results suggest that the effects of helpers on the fitness of pups extend beyond weaning and that helpers may gain direct as well as indirect benefits by feeding pups.
Address Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK. thcb@hermes.cam.ac.uk
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ISSN 0036-8075 ISBN Medium
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Notes PMID:11577235 Approved no
Call Number refbase @ user @ Serial 414
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Author Marr, I.; Preisler, V.; Farmer, K.; Stefanski, V.; Krueger, K.
Title Non-invasive stress evaluation in domestic horses (Equus caballus): impact of housing conditions on sensory laterality and immunoglobulin A Type Journal Article
Year 2020 Publication Royal Society Open Science Abbreviated Journal Royal Society Open Science
Volume 7 Issue 2 Pages (up) 191994
Keywords
Abstract The study aimed to evaluate sensory laterality and concentration of faecal immunoglobulin A (IgA) as non-invasive measures of stress in horses by comparing them with the already established measures of motor laterality and faecal glucocorticoid metabolites (FGMs). Eleven three-year-old horses were exposed to known stressful situations (change of housing, initial training) to assess the two new parameters. Sensory laterality initially shifted significantly to the left and faecal FGMs were significantly increased on the change from group to individual housing and remained high through initial training. Motor laterality shifted significantly to the left after one week of individual stabling. Faecal IgA remained unchanged throughout the experiment. We therefore suggest that sensory laterality may be helpful in assessing acute stress in horses, especially on an individual level, as it proved to be an objective behavioural parameter that is easy to observe. Comparably, motor laterality may be helpful in assessing long-lasting stress. The results indicate that stress changes sensory laterality in horses, but further research is needed on a larger sample to evaluate elevated chronic stress, as it was not clear whether the horses of the present study experienced compromised welfare, which it has been proposed may affect faecal IgA.
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Publisher Royal Society Place of Publication Editor
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Notes doi: 10.1098/rsos.191994 Approved no
Call Number Equine Behaviour @ team @ Serial 6608
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