August 2010
Volume 10, Issue 7
Free
Vision Sciences Society Annual Meeting Abstract  |   August 2010
What are the differences between comparing visual working memory representations with perceptual inputs and comparing two perceptual representations?
Author Affiliations
  • Joo-Seok Hyun
    Department of Psychology, Chung-Ang University, Seoul, Korea
  • Steven Luck
    Center for Mind & Brain, University of California, Davis, USA
Journal of Vision August 2010, Vol.10, 713. doi:10.1167/10.7.713
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      Joo-Seok Hyun, Steven Luck; What are the differences between comparing visual working memory representations with perceptual inputs and comparing two perceptual representations?. Journal of Vision 2010;10(7):713. doi: 10.1167/10.7.713.

      Download citation file:


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

      ×
  • Supplements
Abstract

We reported that the speed of judging presence or absence of any difference between memory and test items (any-difference task) stays relatively constant as the number of difference increases. Contrarily, we also found that the speed of judging that of any sameness between memory and test items (any-sameness task) accelerates as the number of sameness increases. To assess the nature of this contrasting difference, the present study let subjects directly compare two sets of four colored boxes that are simultaneously presented across fixation under any-difference and any-sameness manipulation. The RT results showed that increasing the number of difference or sameness between sample and test moderately accelerated speed of subjects' responses in both conditions. These RT patterns were also observed when position matching between the boxes was made easier. There was however a robust pattern of faster RTs in any-different trials with every item being the same across two sets than any-sameness trials with every item being different. The pattern virtually replicates the ‘Fast-same’ effect reported in our previous study. The present results indicate that comparing two perceptual representations may undergo a matching process that is in part similar to the process for comparing VWM representations with perceptual inputs.

Hyun, J.-S. Luck, S. (2010). What are the differences between comparing visual working memory representations with perceptual inputs and comparing two perceptual representations? [Abstract]. Journal of Vision, 10(7):713, 713a, http://www.journalofvision.org/content/10/7/713, doi:10.1167/10.7.713. [CrossRef]
Footnotes
 NIMH grant R01MH63001, KRF-2009-332-H00027.
×
×

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.

×