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dc.contributor.authorJohnston, Amyen_US
dc.contributor.authorBurne, Thomasen_US
dc.date.accessioned2017-05-03T14:27:32Z
dc.date.available2017-05-03T14:27:32Z
dc.date.issued2008en_US
dc.date.modified2008-09-26T07:30:51Z
dc.identifier.issn03619230en_US
dc.identifier.doi10.1016/j.brainresbull.2008.02.016en_AU
dc.identifier.urihttp://hdl.handle.net/10072/20172
dc.description.abstractThe one-trial passive avoidance learning task is commonly used in avian research to explore anatomical, cellular and molecular parameters of learning and memory. Many factors are known to influence the effectiveness and/or duration of such learning events. Combinations of novel odours, such as pyrazine, and aposematic colours, such as brig ht yellow or red, have been shown to induce a long-lasting aversion to food crumbs in 'visual' predators, including birds such as the domestic chick (1). The aim of this study was to (a) examine whether visual complexity played a role in the generation of an aversive response to a novel visual stimulus and (b) to establish whether the duration of memory of an aversive experience could be modified by altering the visual properties of the stimulus. In the first experiment, naﶥ domestic chicks were trained on a weakly aversive one-trial passive avoidance bead task, in which chicks were allowed to peck at a bead coated with a 10% solution of the bitter-tasting and odorous substance methylanthranilate (MeA). The chicks were trained with (allowed to peck) one of four differently coloured beads dipped in 10% MeA. Chrome, black, yellow or black-and-yellow striped beads were used. 'Recall' of the aversive bead was examined by presenting the (clean) training bead 24 h after training and monitoring avoidance to it compared to a 'neutral' white bead. A high proportion (63%) of chicks trained with the black and yellow striped bead avoided it 24 h after training, whereas little or no avoidance was seen in response to chrome, yellow or black beads. In a second experiment naﶥ domestic chicks were all trained once only with a black and yellow striped bead coated in a 10% MeA solution, but this time, were tested 24 h later, once only, with either a black, a yellow or a black and yellow striped bead. Nearly 60% of chicks tested with a black and yellow striped bead showed avoidance of the bead, whereas only 23% of those tested with a black bead and 14% tested with a yellow bead showed avoidance. These results confirm the importance of complex warning colouration, when paired with a novel olfactory cue and a bitter taste, in avoidance learning. We conclude that the chicks' response to monochromatic colours (e.g. yellow or black) is not affected by their previous experience with a conspicuously patterned stimulus (yellow and black stripes). Moreover, it suggests a predisposition for chicks to attend to aversive cues associated with 'naturalistic' high contrast colour cue combinations such as black and yellow.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.format.extent61320 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherElsevier Incen_US
dc.publisher.placeUnited Statesen_US
dc.publisher.urihttp://www.elsevier.com/wps/find/journaldescription.cws_home/525456/description#descriptionen_AU
dc.relation.ispartofstudentpublicationNen_AU
dc.relation.ispartofpagefrom313en_US
dc.relation.ispartofpageto316en_US
dc.relation.ispartofedition2008en_US
dc.relation.ispartofjournalBrain Research Bulletinen_US
dc.relation.ispartofvolume76en_US
dc.rights.retentionYen_AU
dc.subject.fieldofresearchcode570502en_US
dc.titleAposematic colouration enhances memory formation in domestic chicks trained in a weak passive avoidance learning paradigmen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.facultyGriffith Health, School of Nursing and Midwiferyen_US
gro.rights.copyrightCopyright 2008 Elsevier. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.en_AU
gro.date.issued2008
gro.hasfulltextFull Text


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