University of Illinois Urbana-Champaign

Selective attentional delays and attentional capture among multiple visual onset elements

Fournier, Lisa Renee

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https://hdl.handle.net/2142/22543

Description

Title
Selective attentional delays and attentional capture among multiple visual onset elements
Author(s)
Fournier, Lisa Renee
Issue Date
1993
Doctoral Committee Chair(s)
Eriksen, Charles W.
Department of Study
Psychology
Discipline
Psychology
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
  • Psychology, Behavioral
  • Psychology, Experimental
Language
eng
Abstract
Discrimination and detection responses to a single stimulus presented simultaneously with noise stimuli are slower and less accurate compared to when a single stimulus is presented alone. This occurs even though the location of the relevant stimulus (target) is known or visually indicated with stimuli onset. Results showed noise elements delay both focal attending and automatic processing of a target. Furthermore, visually indicating the target location before target-noise onset (precuing) reduces and can eliminate target processing delays. Processing delays were not due to response competition, random attentional capture by noise, or difficulties in locating the target. It is suggested that simultaneous onset stimuli are perceived initially as a single object and delays in processing a single stimulus are due to difficulties in perceptually segregating this stimulus from noise. Precuing is assumed to facilitate this segregation process.
Type of Resource
text
Permalink
http://hdl.handle.net/2142/22543
Copyright and License Information
Copyright 1993 Fournier, Lisa Renee

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