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Asymmetrical processing of olfactory input in the piriform cortex mediates "activation" of the avian navigation circuitry

2016Journal article Restricted access
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dc.contributor.authorJorge, Paulo
dc.contributor.authorMarques, Paulo A. M.
dc.contributor.authorPinto, Belmiro V.
dc.contributor.authorPhillips, John B.
dc.date.accessioned2016-09-07T18:59:17Z
dc.date.available2016-09-07T18:59:17Z
dc.date.issued2016
dc.description.abstractThe role of odors in the long-distance navigation of birds has elicited intense debate for more than half a century. Failure to resolve many of the issues fueling this debate is due at least in part to the absence of controls for a variety of non-specific effects that odors have on the navigational process. The present experiments were carried out to investigate whether the olfactory inputs are involved only in “activation” of neuronal circuitry involved in navigation or are also playing a role in providing directional information. Experienced adult pigeons were exposed to controlled olfactory stimuli during different segments of the journey (release site vs. displacement + release site). Protein levels of IEGs (immediate early genes used to mark synaptic activity) were analyzed in areas within the olfactory/navigation avian circuitry. The results indicate that 1) exposure to natural odors at the release site (and not before) elicit greater activation across brain regions than exposure to filtered air, artificial odors, and natural odors along the entire outward journey (from home to the release site, inclusive); 2) activation of the piriform cortex in terms of odor discrimination is lateralized; 3) activation of the navigation circuitry is achieved by means of lateralized activation of piriform cortex neurons. Altogether, the findings provide the first direct evidence that activation of the avian navigation circuitry is mediated by asymmetrical processing of olfactory input occurring in the right piriform cortex.pt_PT
dc.description.sponsorshipFundação da Ciência e a Tecnologia (FCT); National Science Foundation USApt_PT
dc.identifier.citationChemical Senses, 0, 1-11. doi: 10.1093/chemse/bjw084pt_PT
dc.identifier.doi10.1093/chemse/bjw084pt_PT
dc.identifier.issn0379-864X
dc.identifier.urihttp://hdl.handle.net/10400.12/4875
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherOxford University Presspt_PT
dc.relationPTDC/BIA-BEC/99416/2008pt_PT
dc.relationNEURONAL PATHWAYS INVOLVED IN OLFACTORY ACTIVATION OF NAVIGATIONAL SYSTEMS
dc.relationIMPACT OF CLIMATE CHANGE IN INCUBATION AND THERMAL BROODING OF PASSERINES
dc.relation.publisherversionhttp://chemse.oxfordjournals.org/content/early/2016/08/11/chemse.bjw084pt_PT
dc.subjectBrain circuitriespt_PT
dc.subjectNeuronal activationpt_PT
dc.subjectOlfactionpt_PT
dc.subjectPiriform cortexpt_PT
dc.subjectVertebratespt_PT
dc.titleAsymmetrical processing of olfactory input in the piriform cortex mediates "activation" of the avian navigation circuitrypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleNEURONAL PATHWAYS INVOLVED IN OLFACTORY ACTIVATION OF NAVIGATIONAL SYSTEMS
oaire.awardTitleIMPACT OF CLIMATE CHANGE IN INCUBATION AND THERMAL BROODING OF PASSERINES
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F64087%2F2009/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F34846%2F2007/PT
oaire.citation.conferencePlaceUnited Kingdompt_PT
oaire.citation.endPage11pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleChemical Sensespt_PT
oaire.citation.volume0pt_PT
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isProjectOfPublicatione8d36d8b-44e7-45d7-8936-40d7a29ce265
relation.isProjectOfPublicationc7c094c5-f011-4adf-8113-b3f004def5f1
relation.isProjectOfPublication.latestForDiscoveryc7c094c5-f011-4adf-8113-b3f004def5f1

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