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Hvorecny, L.M.; Grudowski, J.L.; Blakeslee, C.J.; Simmons, T.L.; Roy, P.R.; Brooks, J.A.; Hanner, R.M.; Beigel, M.E.; Karson, M.A.; Nichols, R.H.; Holm, J.B.; Boal, J.G. |
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Title |
Octopuses (Octopus bimaculoides) and cuttlefishes (Sepia pharaonis, S. officinalis) can conditionally discriminate |
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Journal Article |
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Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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In complex navigation using landmarks, an animal must discriminate between potential cues and show context (condition) sensitivity. Such conditional discrimination is considered a form of complex learning and has been associated primarily with vertebrates. We tested the hypothesis that octopuses and cuttlefish are capable of conditional discrimination. Subjects were trained in two maze configurations (the conditions) in which they were required to select one of two particular escape routes within each maze (the discrimination). Conditional discrimination could be demonstrated by selecting the correct escape route in each maze. Six of ten mud-flat octopuses (Octopus bimaculoides), 6 of 13 pharaoh cuttlefish (Sepia pharaonis), and one of four common cuttlefish (S. officinalis) demonstrated conditional discrimination by successfully solving both mazes. These experiments demonstrate that cephalopods are capable of conditional discrimination and extend the limits of invertebrate complex learning. |
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Department of Biology, Millersville University, 50 East Frederick Street, Millersville, PA, 17551-0302, USA, jean.boal@millersville.edu |
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1435-9448 |
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PMID:17437139 |
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Equine Behaviour @ team @ |
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2405 |
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Author |
Mauck, B.; Dehnhardt, G. |
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Title |
Spatial multiple-choice matching in a harbour seal (Phoca vitulina): differential encoding of landscape versus local feature information? |
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Journal Article |
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2007 |
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Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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The nature of spatial information used for memorizing and recalling places is largely unclear. Earlier studies tested integration of geometric and feature information mostly during reorientation in artificial environments without including time as a memory-critical component. Here, we tested a harbour seal in a delayed matching-to-sample task (DMTS) in a familiar environment under two spatial multiple-choice conditions. The feature condition consisted of a DMTS task with four comparison stimuli presented on fixed positions in a classic matching apparatus and was designed to make stimulus features the most prominent information. The landscape condition consisted of a DMTS task in a familiar environment with four places marked by comparison stimuli and allowed the use of all available spatial information including geometrical and feature information. The seal's performance was impaired by delays of 3, 6, 9 or 12 s only in the feature condition; a delay of 12 s resulted in chance level performance. Replacing the comparison stimuli at the apparatus with identical spheres resulted in impaired performance. Performance in the landscape condition was impaired neither by delays nor by replacing comparison stimuli with spheres. Landscape information obviously was encoded redundantly and could be recalled more reliably and longer than feature information, which reveals feature information to be a less valuable type of spatial information for memorizing and recalling places. |
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Allgemeine Zoologie and Neurobiologie, Ruhr-Universitat Bochum, ND6/33, 44780, Bochum, Germany, Bjoern.Mauck@rub.de |
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1435-9448 |
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PMID:17377825 |
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Equine Behaviour @ team @ |
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2412 |
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Westergaard, G.C.; Evans, T.A.; Howell, S. |
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Title |
Token mediated tool exchange between tufted capuchin monkeys (Cebus apella) |
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Journal Article |
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2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Three experiments were conducted to test whether a pair of tufted capuchin monkeys (Cebus apella) could generalize their ability to exchange tokens and tool objects with a human experimenter to similar exchanges with a conspecific partner. Monkeys were tested in side-by-side enclosures, one enclosure containing a tool-use apparatus and one or more token(s), and the other enclosure containing one or more tool object(s). The monkeys willingly transferred tokens and tools to a conspecific with little practice. Following a small amount of training, we also found that the monkeys would select situation-appropriate tokens to exchange for specific tools, but did not select appropriate tool objects in response to another monkey's token transfers. Implications regarding role reversal are discussed. |
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Alpha Genesis, Inc., 95 Castle Hall Road, P.O. Box 557, Yemassee, SC, 29945, USA |
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1435-9448 |
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PMID:17345056 |
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Equine Behaviour @ team @ |
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2415 |
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Author |
Nelson, G.S. |
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Title |
Onchocerciasis |
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1970 |
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Advances in Parasitology |
Abbreviated Journal |
Adv Parasitol |
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8 |
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173-224 |
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Africa; Animals; Anthelmintics/therapeutic use; Artiodactyla; Blindness/etiology; Cattle; Circadian Rhythm; Ddt; Diethylcarbamazine/therapeutic use; Diptera/anatomy & histology/growth & development; Dwarfism/etiology; Ecology; Eye/pathology; Feeding Behavior; Female; Geography; Haplorhini; Hernia, Femoral/etiology; Horses; Humans; Insect Vectors/growth & development; Larva/growth & development; Male; Onchocerca/classification/growth & development; *Onchocerciasis/diagnosis/drug therapy/epidemiology/immunology/pathology/prevention & control/veterinary; Primates; Serologic Tests; Skin/pathology; Skin Tests; Suramin/therapeutic use |
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0065-308X |
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PMID:4997515 |
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Equine Behaviour @ team @ |
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2738 |
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Author |
Beer, C.G. |
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Title |
Varying Views of Animal and Human Cognition |
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Book Chapter |
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Year |
1998 |
Publication |
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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no |
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Equine Behaviour @ team @ |
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2915 |
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Gopnik A, G.P. |
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Knowing how you know: young children's ability to identify and remember the sources of their beliefs |
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1988 |
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Child Dev. |
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59 |
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1366 |
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Equine Behaviour @ team @ |
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3001 |
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Purpura, G.J. |
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Title |
In Search of Human Uniqueness |
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2006 |
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Philosophical Psychology |
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19 |
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443-461 |
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refbase @ user @ |
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3435 |
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Davidsson T.E.; Leonardson L.G.; Marston H.M. |
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Title |
Analysis of cognitive function in animals, the value of SDT |
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1996 |
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Cognitive Brain Research |
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3 |
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269-277 |
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Weed M.R.; Taffe M.A.; Polis I.; Roberts A.C.; Robbins T.W.; Koob G.F.; Bloom F.E.; Gold L.H. |
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Title |
Performance norms for a rhesus monkey neuropsychological testing battery: acquisition and long-term performance |
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1999 |
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Cognitive Brain Research |
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8 |
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185-201 |
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3459 |
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Vallortigara G.; Regolin L.; Pagni P. |
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Title |
Detour behaviour, imprinting and visual lateralization in the domestic chick |
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1999 |
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Cognitive Brain Research |
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7 |
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307-320 |
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3461 |
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