Accession Number:

ADA273762

Title:

Abrupt Luminance Change Pops-Out: Abrupt Color Change Does Not

Descriptive Note:

Final rept.,

Corporate Author:

INSTITUTE FOR PERCEPTION RVO-TNO SOESTERBERG (NETHERLANDS)

Personal Author(s):

Report Date:

1993-10-13

Pagination or Media Count:

19.0

Abstract:

The present study investigated whether an isoluminant color change pops-out indicating that it can be detected pre-attentively in parallel. Experiment 1 shows that an abrupt color change presented on an isoluminant background does not pop-out. However, when the color change is accompanied by a small luminance change, it pops-out and attracts attention. Experiment 2 shows that the pop-out is fully due to the luminance change and not to the color change. Experiment 3 shows that the failure to find a pop-out at isoluminance cannot be attributed to the Limited temporal resolution for chromatic stimuli. The results are in agreement with physiological findings regarding the parvo and magno system.

Subject Categories:

  • Psychology
  • Anatomy and Physiology
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE