Author Type

Graduate Student

Date of Award

1982

Document Type

Thesis

Publication Status

Version of Record

Submission Date

October 2026

Abstract

Evoked potentials elicited by tones of high and low probability of presentation requiring the suppression of a frequent response (counting or not-counting) or its maintenance were studied. Low probability (Novel) tones requiring response (counting) suppression elicited P300 amplitudes of the event-related potential comparable to those elicited by low probability tones (Target) which did not require suppression of an ongoing frequent response. This finding was not in agreement with those reported in a similar study by Karlin and Martz (1973). It was advanced that situations in which subjects maintain a high level of response readiness enhance the effects of stimulus probability and response probability on P300 amplitude values. In agreement with the current literature, low probability stimuli (Novel and Target) were found to consistently elicit larger P300 amplitudes than high probability (Background) stimuli regardless of response frequency. N100 amplitudes were also larger for low probability tones than for high probability Background tones. These results were attributed to either habituation, attention or a combination of both. P200-N250 peak-to-peak amplitude values were also shown to be larger in response to Target and Novel tones than in response to Background tones.

Extent

64 p.

Comments

Thesis (M.A.)--Florida Atlantic University, 1982.|Charles E. Schmidt College of Science|FAU Electronic Theses and Dissertations Collection|Thesis (M.A.)--Florida Atlantic University, 1982.

Identifier

FADT14126

Format

pdf

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