Effects of age and eccentricity on visual target detection.
The aim of this study was to examine the effects of aging and target eccentricity on a visual search task comprising 30 images of everyday life projected into a hemisphere, realizing a ±90° visual field. The task performed binocularly allowed participants to freely move their eyes to scan images for...
| Publicado en: | Frontiers in Aging Neuroscience Vol. 6; pp. 1 - 11 |
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| Autores principales: | , , , , , , , , |
| Formato: | Journal Article |
| Publicado: |
Frontiers Media S.A.
Jan2014
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=97779321&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 97779321 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 16634365 BG2U jtl: Frontiers in Aging Neuroscience issn: 16634365 maglogo: N pubinfo: dt: Jan2014 vid: 6 pid: 40038 pub: Frontiers Media S.A. artinfo: ui: 97779321 10.3389/fnagi.2013.00101 97779321 ppf: 1 ppct: 10 formats: tig: atl: Effects of age and eccentricity on visual target detection. aug: au: Gruber, Nicole Müri, René M. Mosimann, Urs P. Bieri, Rahel Aeschimann, Andrea Zito, Giuseppe A. Urwyler, Prabitha Nyffeler, Thomas Nef, Tobias affil: Gerontechnology and Rehabilitation Group, University of Bern, Bern, Switzerland sug: ab: The aim of this study was to examine the effects of aging and target eccentricity on a visual search task comprising 30 images of everyday life projected into a hemisphere, realizing a ±90° visual field. The task performed binocularly allowed participants to freely move their eyes to scan images for an appearing target or distractor stimulus (presented at 10°; 30°, and 50° eccentricity). The distractor stimulus required no response, while the target stimulus required acknowledgment by pressing the response button. One hundred and seventeen healthy subjects (mean age = 49.63 years, SD = 17.40 years, age range 20-78 years) were studied. The results show that target detection performance decreases with age as well as with increasing eccentricity, especially for older subjects. Reaction time also increases with age and eccentricity, but in contrast to target detection, there is no interaction between age and eccentricity. Eye movement analysis showed that younger subjects exhibited a passive search strategy while older subjects exhibited an active search strategy probably as a compensation for their reduced peripheral detection performance. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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