Document Detail

Repetition streaks increase perceptual sensitivity in visual search of brief displays.
MedLine Citation:
PMID:  19325897     Owner:  NLM     Status:  Publisher    
Studies examining possible priming effects on visual search have generally shown that repeating the same type of search facilitates or speeds performance. But such studies typically assess any priming via measuring response latency, in tasks where accuracy is at or near ceiling. This leaves open the possibility that criterion shifts alone might produce the apparent improvements, and such shifts could plausibly arise when, say, a particular type of repeated search display becomes predictable. Here we assessed criterion free perceptual sensitivity (d') for visual search, in two experiments that used brief masked displays to bring performance off ceiling. In experiment 1, sensitivity for conjunction search improved with successive repetitions of the same type of search, with sensitivity enhanced for both target-present and target-absent trials. In experiment 2, sensitivity for a search task requiring discrimination on a color-singleton target likewise showed enhancement with repetition. We conclude that priming in visual search, arising due to repetition streaks, is characterized by genuine improvements in perceptual sensitivity, not just criterion shifts.
Heida Maria Sigurdardottir; Arni Kristjánsson; Jon Driver
Related Documents :
17968057 - Show me: automatic presentation for visual analysis.
2398327 - Developmental differences in visual processing: strategy versus structure.
2336337 - Expertise, visual search, and information pick-up in squash.
18262957 - Memory efficient propagation-based watershed and influence zone algorithms for large im...
24635187 - Synchronization of speech and gesture: evidence for interaction in action.
2754387 - Young children's knowledge of their memory span: effects of task and experience.
Publication Detail:
Journal Detail:
Title:  Visual cognition     Volume:  16     ISSN:  1350-6285     ISO Abbreviation:  Vis cogn     Publication Date:  2008 Jul 
Date Detail:
Created Date:  2009-3-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9442139     Medline TA:  Vis cogn     Country:  -    
Other Details:
Languages:  ENG     Pagination:  643-658     Citation Subset:  -    
University of Iceland, Department of Psychology, Oddi v. Sturlugötu, 101 Reykjavík, Iceland.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Grant Support
066097//Wellcome Trust

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Anx2 interacts with HIV-1 Gag at phosphatidylinositol (4,5) bisphosphate-containing lipid rafts and ...
Next Document:  Infection after ICD implantation: operating room versus cardiac catheterisation laboratory.