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Author |
Ristau, C.A. |
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Title |
Language, cognition, and awareness in animals? |
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1983 |
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Ann. N.Y. Acad. Sci. |
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406 |
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1 |
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170-186 |
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Equine Behaviour @ team @ |
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2952 |
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Verguts, T.; Fias, W. |
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Title |
Representation of Number in Animals and Humans: A Neural Model |
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Journal Article |
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2004 |
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J. Cogn. Neurosci. |
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16 |
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9 |
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1493-1504 |
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This article addresses the representation of numerical information conveyed by nonsymbolic and symbolic stimuli. In a first simulation study, we show how number-selective neurons develop when an initially uncommitted neural network is given nonsymbolic stimuli as input (e.g., collections of dots) under unsupervised learning. The resultant network is able to account for the distance and size effects, two ubiquitous effects in numerical cognition. Furthermore, the properties of the network units conform in detail to the characteristics of recently discovered number-selective neurons. In a second study, we simulate symbol learning by presenting symbolic and nonsymbolic input simultaneously. The same number-selective neurons learn to represent the numerical meaning of symbols. In doing so, they show properties reminiscent of the originally available number-selective neurons, but at the same time, the representational efficiency of the neurons is increased when presented with symbolic input. This finding presents a concrete proposal on the linkage between higher order numerical cognition and more primitive numerical abilities and generates specific predictions on the neural substrate of number processing. N1 - |
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Equine Behaviour @ team @ |
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2954 |
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Adamo, S.A.; Ehgoetz, K.; Sangster, C.; Whitehorne, I. |
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Title |
Signaling to the Enemy? Body Pattern Expression and Its Response to External Cues During Hunting in the Cuttlefish Sepia officinalis (Cephalopoda) |
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2006 |
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Biol. Bull. |
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210 |
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3 |
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192-200 |
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Abstract. Cuttlefish can rapidly alter their appearance by using neurally controlled chromatophore organs. This ability may provide a window into their cognitive capacity. We test whether the changes in body pattern that occur during hunting depend on context. If they do, then it may be possible to use these changes to study cephalopod cognition while the animal is engaged in ecologically relevant tasks. We found consistent individual differences in the tendency of cuttlefish to hunt with the first two arms raised. We also found that cuttlefish usually darken their skin after they seize a prey item. This darkening is observed regardless of the identity of the prey (fish, crab, or shrimp), prey context (buried in sand, in a bare tank, or on top of a rock pile), or the presence of a sudden stimulus. The sudden stimulus was created by presenting an overhead model bird to the cuttlefish. The model induced components of the Deimatic Display, which is a form of antipredator behavior, suggesting that the model was perceived as a potential threat. Passing Cloud displays and the Darkening of the arms were significantly reduced after exposure to the model bird. The effect of a potential predator on body pattern expression during hunting suggests it may be possible to use these changes as a sensitive indicator of ecologically relevant learning. N1 - |
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Equine Behaviour @ team @ |
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2960 |
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Author |
Bermú dez, J.é |
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Title |
Thinking Without Words: An Overview for Animal Ethics |
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2007 |
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The Journal of Ethics |
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11 |
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319-335 |
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refbase @ user @ |
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3399 |
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Allen, C.; Bekoff, M. |
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Animal Minds, Cognitive Ethology, and Ethics |
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2007 |
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The Journal of Ethics |
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11 |
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299-317 |
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refbase @ user @ |
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3400 |
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Author |
Amsterdam BK |
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Title |
Mirror self-image reactions before age two |
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1972 |
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Dev. Psychol. |
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5 |
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297 |
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Equine Behaviour @ team @ |
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2976 |
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Author |
Anderson JR |
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Title |
The development of self-recognition: a review |
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1984 |
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Dev. Psychobiol. |
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17 |
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35 |
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Equine Behaviour @ team @ |
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2977 |
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Author |
Anderson JR; Gallup GG |
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Title |
Self-recognition in Saguinus? A critical essay |
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1997 |
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Animal Behaviour. |
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Anim. Behav. |
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54 |
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1563 |
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Equine Behaviour @ team @ |
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2978 |
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Author |
Baron-Cohen S; Leslie AM; Frith U |
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Does the autistic child have a “theory of mind”? |
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1985 |
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Cognition |
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21 |
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37 |
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Equine Behaviour @ team @ |
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2979 |
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Author |
Bertenthal BI; Fischer KW |
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Development of self-recognition in the infant |
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1978 |
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Dev. Psychol. |
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14 |
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44 |
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Equine Behaviour @ team @ |
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2980 |
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