David Griggs

Publication Date


Advisor(s) - Committee Chair

Karlene Ball, Bettina Beard, Richard Miller, John O’Conner

Degree Program

Department of Psychology

Degree Type

Master of Arts


The aim of this project was to examine age-related declines in the processing of spatial frequency information. Some current theories of spatial vision state that humans process high spatial frequency information separately or differently from low spatial frequency information. There is also evidence that normal aging may affect the processing of some spatial frequencies more than others. Specifically, it has been proposed that older adults have deficits in their ability to process low spatial frequency information, and that older adults process visual information more slowly in general than young adults. Eight observers in each of three age groups were tested on a localization task. The spatial frequency content of distractors presented in the visual field was varied along with speed of presentation and clarity of the display. A progressive loss in the extent of the functional visual field was demonstrated. Results were consistent with the position that older adults experience declines in their ability to process temporal information, and that older adults do process visual information at a slower rate than young adults.


Psychology | Social and Behavioral Sciences

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Psychology Commons