June 2004
Volume 4, Issue 8
Free
Vision Sciences Society Annual Meeting Abstract  |   August 2004
Age-group differences in comparative visual search
Author Affiliations
  • Lawrence R. Gottlob
    University of Kentucky, USA
Journal of Vision August 2004, Vol.4, 642. doi:10.1167/4.8.642
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      Lawrence R. Gottlob; Age-group differences in comparative visual search. Journal of Vision 2004;4(8):642. doi: 10.1167/4.8.642.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
Abstract

In a comparative visual search experiment (Pomplun, Sichelschmidt, Wagner, Clermont, Rickheit, & Ritter, 2001), two halves of a display (12, 15, or 18 items per half) contained visual primitives of various shapes (circles, triangles, squares) and colors (green, blue, red). On 50% of trials, a single primitive differed between the two halves in form, color, or form/color; on the other 50% of trials, the two halves were identical. The observers' task was to make a yes/no decision to the presence of the different primitive. Eye movements and response latency and accuracy were measured. In other studies, age-group differences in many of the sub-components of this task (e. g. feature search, VSTM capacity, and memory for oculomotor search) have been found to be minimal. However, the comparative search task produced age-group decrements in various measures, including response time, numbers of fixations, numbers of target rechecks, and target fixation time. Older adults did not show strategy differences: saccade amplitude and various measures of scan-path efficiency were similar across age group. Results indicate that older adults experience decrements when it is necessary to coordinate multiple elementary processes.

NIA RO1 AG20860-03

Gottlob, L. R.(2004). Age-group differences in comparative visual search [Abstract]. Journal of Vision, 4( 8): 642, 642a, http://journalofvision.org/4/8/642/, doi:10.1167/4.8.642. [CrossRef]
×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×