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Author |
Rizzolatti, G.; Fogassi, L.; Gallese, V. |
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Title |
Mirrors of the mind |
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Journal Article |
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Year |
2006 |
Publication |
Scientific American |
Abbreviated Journal  |
Sci Am |
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Volume |
295 |
Issue |
5 |
Pages |
54-61 |
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Keywords |
Animals; Brain/*physiology; Cognition/*physiology; Discrimination (Psychology)/physiology; Emotions/physiology; Humans; Imitative Behavior; Learning/*physiology; Mental Processes/*physiology; Motor Activity/physiology; Neurons/physiology; Recognition (Psychology); Sensation/physiology |
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Neurosciences Department, University of Parma, Italy |
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0036-8733 |
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PMID:17076084 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2829 |
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Author |
de Waal, F.B.M.; Dindo, M.; Freeman, C.A.; Hall, M.J. |
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Title |
The monkey in the mirror: hardly a stranger |
Type |
Journal Article |
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Year |
2005 |
Publication |
Proceedings of the National Academy of Sciences of the United States of America |
Abbreviated Journal |
Proc. Natl. Acad. Sci. U.S.A. |
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Volume |
102 |
Issue |
32 |
Pages |
11140-11147 |
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Keywords |
Analysis of Variance; Animals; Cebus/*physiology; *Discrimination (Psychology); Empathy; Female; Male; Observation; *Recognition (Psychology); *Self Concept; Sex Factors |
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Abstract |
It is widely assumed that monkeys see a stranger in the mirror, whereas apes and humans recognize themselves. In this study, we question the former assumption by using a detailed comparison of how monkeys respond to mirrors versus live individuals. Eight adult female and six adult male brown capuchin monkeys (Cebus apella) were exposed twice to three conditions: (i) a familiar same-sex partner, (ii) an unfamiliar same-sex partner, and (iii) a mirror. Females showed more eye contact and friendly behavior and fewer signs of anxiety in front of a mirror than they did when exposed to an unfamiliar partner. Males showed greater ambiguity, but they too reacted differently to mirrors and strangers. Discrimination between conditions was immediate, and blind coders were able to tell the difference between monkeys under the three conditions. Capuchins thus seem to recognize their reflection in the mirror as special, and they may not confuse it with an actual conspecific. Possibly, they reach a level of self-other distinction intermediate between seeing their mirror image as other and recognizing it as self. |
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Living Links Center, Emory University, Atlanta, GA 30322, USA. dewaal@emory.edu |
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0027-8424 |
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PMID:16055557 |
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Call Number |
refbase @ user @ |
Serial |
164 |
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Author |
Holekamp, K.E.; Sakai, S.T.; Lundrigan, B.L. |
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Title |
Social intelligence in the spotted hyena (Crocuta crocuta) |
Type |
Journal Article |
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Year |
2007 |
Publication |
Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences |
Abbreviated Journal |
Philos Trans R Soc Lond B Biol Sci |
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Volume |
362 |
Issue |
1480 |
Pages |
523-538 |
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Keywords |
Anatomy, Comparative; Animals; Brain/*anatomy & histology; Cercopithecinae/anatomy & histology/*physiology; Decision Making/physiology; Hyaenidae/anatomy & histology/*physiology; *Intelligence; *Recognition (Psychology); *Social Behavior; Species Specificity |
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If the large brains and great intelligence characteristic of primates were favoured by selection pressures associated with life in complex societies, then cognitive abilities and nervous systems with primate-like attributes should have evolved convergently in non-primate mammals living in large, elaborate societies in which social dexterity enhances individual fitness. The societies of spotted hyenas are remarkably like those of cercopithecine primates with respect to size, structure and patterns of competition and cooperation. These similarities set an ideal stage for comparative analysis of social intelligence and nervous system organization. As in cercopithecine primates, spotted hyenas use multiple sensory modalities to recognize their kin and other conspecifics as individuals, they recognize third-party kin and rank relationships among their clan mates, and they use this knowledge adaptively during social decision making. However, hyenas appear to rely more intensively than primates on social facilitation and simple rules of thumb in social decision making. No evidence to date suggests that hyenas are capable of true imitation. Finally, it appears that the gross anatomy of the brain in spotted hyenas might resemble that in primates with respect to expansion of frontal cortex, presumed to be involved in the mediation of social behaviour. |
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Department of Zoology, Michigan State University, East Lansing, MI 48824, USA. holekamp@msu.edu |
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ISSN |
0962-8436 |
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Notes |
PMID:17289649 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4719 |
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Author |
Zentall, T.R.; Klein, E.D.; Singer, R.A. |
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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 |
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Journal Article |
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Year |
2004 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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Volume |
30 |
Issue |
2 |
Pages |
129-134 |
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Keywords |
Animals; Artifacts; Association Learning; Columbidae; *Discrimination Learning; *Recognition (Psychology); *Retention (Psychology); *Time Perception; *Transfer (Psychology) |
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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. |
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Department of Psychology, University of Kentucky, Lexington, KY 40506-0044, USA. zentall@uky.edu |
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0097-7403 |
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Notes |
PMID:15078122 |
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no |
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Call Number |
refbase @ user @ |
Serial |
232 |
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Author |
Aust, U.; Huber, L. |
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Title |
Picture-object recognition in pigeons: evidence of representational insight in a visual categorization task using a complementary information procedure |
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 |
190-195 |
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Keywords |
Animals; Classification; *Cognition; Columbidae; *Discrimination Learning; *Form Perception; *Generalization (Psychology); Humans; Perceptual Closure; Photic Stimulation; Photography; *Recognition (Psychology) |
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Abstract |
Success in tasks requiring categorization of pictorial stimuli does not prove that a subject understands what the pictures stand for. The ability to achieve representational insight is by no means a trivial one because it exceeds mere detection of 2-D features present in both the pictorial images and their referents. So far, evidence for such an ability in nonhuman species is weak and inconclusive. Here, the authors report evidence of representational insight in pigeons. After being trained on pictures of incomplete human figures, the birds responded significantly more to pictures of the previously missing parts than to nonrepresentative stimuli, which demonstrates that they actually recognized the pictures' representational content. |
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Department for Behavior, Neurobiology and Cognition, University of Vienna, Austria. ulrike.aust@univie.ac.at |
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0097-7403 |
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Notes |
PMID:16634663 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2759 |
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Author |
Vokey, J.R.; Rendall, D.; Tangen, J.M.; Parr, L.A.; de Waal, F.B.M. |
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Title |
Visual kin recognition and family resemblance in chimpanzees (Pan troglodytes) |
Type |
Journal Article |
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Year |
2004 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
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Volume |
118 |
Issue |
2 |
Pages |
194-199 |
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Keywords |
Animals; Female; Male; Pan troglodytes; Random Allocation; *Recognition (Psychology); *Visual Perception |
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Abstract |
The male-offspring biased visual kin recognition in chimpanzees (Pan troglodytes) reported by L. A. Parr and F. B. M. de Waal (1999) was replicated with human (Homo sapiens) participants and a principal components analysis (PCA) of pixel maps of the chimpanzee face photos. With the same original materials and methods, both humans and the PCA produced the same asymmetry in kin recognition as found with the chimpanzees. The PCA suggested that the asymmetry was a function of differences in the distribution of global characteristics associated with the framing of the faces in the son and daughter test sets. Eliminating potential framing biases, either by cropping the photos tightly to the faces or by rebalancing the recognition foils, eliminated the asymmetry but not human participants' ability to recognize chimpanzee kin. |
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Department of Psychology and Neuroscience, University of Lethbridge, Lethbridge, Alberta, Canada. vokey@uleth.ca |
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0735-7036 |
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PMID:15250806 |
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no |
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Call Number |
refbase @ user @ |
Serial |
171 |
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Author |
Flack, J.C.; Jeannotte, L.A.; de Waal, F.B.M. |
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Title |
Play signaling and the perception of social rules by juvenile chimpanzees (Pan troglodytes) |
Type |
Journal Article |
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Year |
2004 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
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Volume |
118 |
Issue |
2 |
Pages |
149-159 |
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Keywords |
Age Factors; Animals; Behavior, Animal; Female; Male; Pan troglodytes; *Play and Playthings; Recognition (Psychology); *Signal Detection (Psychology); *Social Perception |
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Abstract |
Prescriptive social rules are enforced statistical regularities. The authors investigated whether juvenile chimpanzees (Pan troglodytes) recognize and use enforced statistical regularities to guide dyadic play behavior. They hypothesized (a) that proximity of adults, especially mothers of younger play partners, to play bouts will increase the play signaling of older partners and (b) that when juvenile-juvenile play bouts occur in proximity to adults, older partners will play at a lower intensity than when no adults are present. They found that older and younger partners increase their play signaling in the presence of the mothers of younger partners, particularly as the intensity of play bouts increases. In contrast to their hypothesis, older partners played more roughly when the mothers of younger partners were in proximity. These results suggest that juvenile chimpanzees increase play signaling to prevent termination of the play bouts by mothers of younger partners. |
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Santa Fe Institute, NM 97501, USA. jflack@santafe.edu |
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0735-7036 |
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PMID:15250802 |
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Call Number |
refbase @ user @ |
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172 |
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Author |
Soproni, K.; Miklósi, Á.; Topál, J.; Csányi, V. |
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Title |
Dogs' (Canis familiaris) responsiveness to human pointing gestures |
Type |
Journal Article |
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Year |
2002 |
Publication |
Journal of Comparative Psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
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Volume |
116 |
Issue |
1 |
Pages |
27-34 |
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Keywords |
Analysis of Variance; Animals; *Behavior, Animal; Choice Behavior; Dogs/*psychology; Female; Gestures; Male; *Recognition (Psychology); Species Specificity |
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Abstract |
In a series of 3 experiments, dogs (Canis familiaris) were presented with variations of the human pointing gesture: gestures with reversed direction of movement, cross-pointing, and different arm extensions. Dogs performed at above chance level if they could see the hand (and index finger) protruding from the human body contour. If these minimum requirements were not accessible, dogs still could rely on the body position of the signaler. The direction of movement of the pointing arm did not influence the performance. In summary, these observations suggest that dogs are able to rely on relatively novel gestural forms of the human communicative pointing gesture and that they are able to comprehend to some extent the referential nature of human pointing. |
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Department of Ethology, Eotvos Lorand University, Budapest, Hungary. krisztinasoproni@hotmail.com |
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0735-7036 |
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PMID:11926681 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4962 |
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Author |
Soproni, K.; Miklósi, A.; Topál, J.; Csányi, V. |
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Title |
Comprehension of human communicative signs in pet dogs (Canis familiaris) |
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Journal Article |
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Year |
2001 |
Publication |
Journal of Comparative Psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
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Volume |
115 |
Issue |
2 |
Pages |
122-126 |
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Keywords |
Animals; *Behavior, Animal; Choice Behavior; Dogs/*psychology; Female; Humans; Male; Nonverbal Communication/*psychology; *Recognition (Psychology); *Social Behavior |
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On the basis of a study by D. J. Povinelli, D. T. Bierschwale, and C. G. Cech (1999), the performance of family dogs (Canis familiaris) was examined in a 2-way food choice task in which 4 types of directional cues were given by the experimenter: pointing and gazing, head-nodding (“at target”), head turning above the correct container (“above target”), and glancing only (“eyes only”). The results showed that the performance of the dogs resembled more closely that of the children in D. J. Povinelli et al.'s study, in contrast to the chimpanzees' performance in the same study. It seems that dogs, like children, interpret the test situation as being a form of communication. The hypothesis is that this similarity is attributable to the social experience and acquired social routines in dogs because they spend more time in close contact with humans than apes do, and as a result dogs are probably more experienced in the recognition of human gestures. |
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Department of Ethology, Budapest, Hungary. lavina@ludens.elte.hu |
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0735-7036 |
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PMID:11459158 |
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Equine Behaviour @ team @ |
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4963 |
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Author |
Brennan, P.A. |
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Title |
The nose knows who's who: chemosensory individuality and mate recognition in mice |
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Journal Article |
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Year |
2004 |
Publication |
Hormones and Behavior |
Abbreviated Journal |
Horm Behav |
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Volume |
46 |
Issue |
3 |
Pages |
231-240 |
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Keywords |
Animals; Chemoreceptors/physiology; Discrimination Learning/*physiology; Embryo Implantation/physiology; Female; Individuality; Major Histocompatibility Complex/physiology; Male; Mice; Neurons, Afferent/physiology; Nose/cytology/physiology; Perception/physiology; Pregnancy; Pregnancy Maintenance/physiology; Pregnancy, Animal/*physiology; Receptors, Odorant/*physiology; Recognition (Psychology)/*physiology; Sexual Behavior, Animal/*physiology; Smell/*physiology; Urine/physiology; Vomeronasal Organ/cytology/physiology |
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Individual recognition is an important component of behaviors, such as mate choice and maternal bonding that are vital for reproductive success. This article highlights recent developments in our understanding of the chemosensory cues and the neural pathways involved in individuality discrimination in rodents. There appear to be several types of chemosensory signal of individuality that are influenced by the highly polymorphic families of major histocompatibility complex (MHC) proteins or major urinary proteins (MUPs). Both have the capability of binding small molecules and may influence the individual profile of these chemosignals in biological fluids such as urine, skin secretions, or saliva. Moreover, these proteins, or peptides associated with them, can be taken up into the vomeronasal organ (VNO) where they can potentially interact directly with the vomeronasal receptors. This is particularly interesting given the expression of major histocompatibility complex Ib proteins by the V2R class of vomeronasal receptor and the highly selective responses of accessory olfactory bulb (AOB) mitral cells to strain identity. These findings are consistent with the role of the vomeronasal system in mediating individual discrimination that allows mate recognition in the context of the pregnancy block effect. This is hypothesized to involve a selective increase in the inhibitory control of mitral cells in the accessory olfactory bulb at the first level of processing of the vomeronasal stimulus. |
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Sub-Department of Animal Behaviour, University of Cambridge, Madingley, Cambridge CB3 8AA, UK. pab23@cus.cam.ac.uk |
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0018-506X |
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PMID:15325224 |
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Equine Behaviour @ team @ |
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4191 |
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