May 2008
Volume 8, Issue 6
Vision Sciences Society Annual Meeting Abstract  |   May 2008
Coactivation occurs within objects, not between dimensions
Author Affiliations
  • J. Toby Mordkoff
    Dept of Psychology, University of Iowa
  • Rose Halterman
    Dept of Psychology, University of Iowa
Journal of Vision May 2008, Vol.8, 986. doi:10.1167/8.6.986
  • Views
  • Share
  • Tools
    • Alerts
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      J. Toby Mordkoff, Rose Halterman; Coactivation occurs within objects, not between dimensions. Journal of Vision 2008;8(6):986. doi: 10.1167/8.6.986.

      Download citation file:

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

  • Supplements

Previous work has suggested that targets from separable dimensions, such as color and shape, can coactivate responses. This contrasts with the “race” that occurs between targets from the same dimension. Assuming, for example, that the targets are red and X, a red O and green X would coactivate the response, whereas two red Os or two green Xs would participate in a race to activate the response. However, instead of focusing on the number of dimensions that contain targets (two vs one), it could alternatively be argued that the critical difference concerns the number of objects (one vs two). When multiple targets are from the same d imension, they must be processed as distinct objects. When targets are from different dimensions, they may be combined into a single object. Under this view, for which we have found some very strong evidence, coactivation occurs within objects and not between dimensions.

Mordkoff, J. T. Halterman, R. (2008). Coactivation occurs within objects, not between dimensions [Abstract]. Journal of Vision, 8(6):986, 986a,, doi:10.1167/8.6.986. [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.