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Selective spatial enhancement: Attentional spotlight size impacts spatial but not temporal perception

Goodhew, Stephanie C; Shen, Elizabeth; Edwards, Mark

Description

An important but often neglected aspect of attention is how changes in the attentional spotlight size impact perception. The zoom-lens model predicts that a small ("focal") attentional spotlight enhances all aspects of perception relative to a larger ("diffuse" spotlight). However, based on the physiological properties of the two major classes of visual cells (magnocellular and parvocellular neurons) we predicted trade-offs in spatial and temporal acuity as a function of spotlight size....[Show more]

dc.contributor.authorGoodhew, Stephanie C
dc.contributor.authorShen, Elizabeth
dc.contributor.authorEdwards, Mark
dc.date.accessioned2016-07-14T03:57:39Z
dc.identifier.issn1069-9384
dc.identifier.urihttp://hdl.handle.net/1885/106394
dc.description.abstractAn important but often neglected aspect of attention is how changes in the attentional spotlight size impact perception. The zoom-lens model predicts that a small ("focal") attentional spotlight enhances all aspects of perception relative to a larger ("diffuse" spotlight). However, based on the physiological properties of the two major classes of visual cells (magnocellular and parvocellular neurons) we predicted trade-offs in spatial and temporal acuity as a function of spotlight size. Contrary to both of these accounts, however, across two experiments we found that attentional spotlight size affected spatial acuity, such that spatial acuity was enhanced for a focal relative to a diffuse spotlight, whereas the same modulations in spotlight size had no impact on temporal acuity. This likely reflects the function of attention: to induce the high spatial resolution of the fovea in periphery, where spatial resolution is poor but temporal resolution is good. It is adaptive, therefore, for the attentional spotlight to enhance spatial acuity, whereas enhancing temporal acuity does not confer the same benefit.
dc.description.sponsorshipThis research was supported by an Australian Research Council (ARC) Discovery Early Career Researcher Award (DE140101734) awarded to S.C.G. and an ARC Discovery Grant (DP110104553) awarded to M.E.
dc.format6 pages
dc.publisherSpringer Verlag (Germany)
dc.rights© Springer Verlag (Germany)
dc.sourcePsychonomic bulletin & review
dc.subjectattention
dc.subjectmagnocellular
dc.subjectparvocellular
dc.subjectspatial
dc.subjectspatial attention
dc.subjectspotlight
dc.subjecttemporal
dc.subjectvisual perception
dc.subjectzoom-lens
dc.titleSelective spatial enhancement: Attentional spotlight size impacts spatial but not temporal perception
dc.typeJournal article
dc.date.issued2016-05-03
local.publisher.urlhttp://link.springer.com/
local.type.statusAccepted Version
local.contributor.affiliationGoodhew, Stephanie, School of Psychology, CMBE Research School of Psychology, The Australian National University
local.contributor.affiliationShen, Elizabeth, School of Psychology, CMBE Research School of Psychology, The Australian National University
local.contributor.affiliationEdwards, Mark, School of Psychology, CMBE Research School of Psychology, The Australian National University
local.description.embargo2017-05-04
dc.relationhttp://purl.org/au-research/grants/arc/DE140101734
dc.relationhttp://purl.org/au-research/grants/arc/DP110104553
local.identifier.essn1531-5320
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage6
local.identifier.doi10.3758/s13423-015-0904-6
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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