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Exogenous attention to fear: Differential behavioral and neural responses to snakes and spiders

2017Journal article Restricted access
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dc.contributor.authorSoares, Sandra Cristina de Oliveira
dc.contributor.authorKessel, Dominique
dc.contributor.authorLorca, María Hernández
dc.contributor.authorRubio, María J. García
dc.contributor.authorRodrigues, Paulo
dc.contributor.authorGomes, Nuno
dc.contributor.authorCarretié, Luis
dc.date.accessioned2017-03-15T19:35:44Z
dc.date.available2017-03-15T19:35:44Z
dc.date.issued2017
dc.description.abstractResearch has consistently shown that threat stimuli automatically attract attention in order to activate the defensive response systems. Recent findings have provided evidence that snakes tuned the visual system of evolving primates for their astute detection, particularly under challenging perceptual conditions. The goal of the present study was to measure behavioral and electrophysiological indices of exogenous attention to snakes, compared with spiders - matched for rated fear levels but for which sources of natural selection are less well grounded, and to innocuous animals (birds), which were presented as distracters, while participants were engaged in a letter discrimination task. Duration of stimuli, consisting in a letter string and a concurrent distracter, was either presented for 180 or 360ms to explore if the stimulus duration was a modulating effect of snakes in capturing attention. Results showed a specific early (P1) exogenous attention-related brain potential with maximal amplitude to snakes in both durations, which was followed by an enhanced late attention-related potential (LPP) showing enhanced amplitudes to spiders, particularly under the longer exposure durations. These results suggest that exogenous attention to different classes of threat stimuli follows a gradual process, with the most evolutionary-driven stimulus, i.e., snakes, being more efficient at attracting early exogenous attention, thus more dependent on bottom-up processes.pt_PT
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO) of Spainpt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationNeuropsychologia, 99, 139-147. Doi: 10.1016/j.neuropsychologia.2017.03.007pt_PT
dc.identifier.doi10.1016/j.neuropsychologia.2017.03.007pt_PT
dc.identifier.issn0028-3932
dc.identifier.urihttp://hdl.handle.net/10400.12/5332
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationPSI2014-54853-Ppt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectSnakespt_PT
dc.subjectSpiderspt_PT
dc.subjectERPspt_PT
dc.subjectExogenous attentionpt_PT
dc.subjectEvolutionpt_PT
dc.titleExogenous attention to fear: Differential behavioral and neural responses to snakes and spiderspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceUnited Kingdompt_PT
oaire.citation.endPage147pt_PT
oaire.citation.startPage139pt_PT
oaire.citation.titleNeuropsychologiapt_PT
oaire.citation.volume99pt_PT
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT

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