The effects of arrow direction, length of interstimulus interval, and certainty of interstimulus interval length on event related potentials occurring during the course of the interstimulus interval
- UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
- Alvin L. Keyes (Creator)
- Institution
- The University of North Carolina at Greensboro (UNCG )
- Web Site: http://library.uncg.edu/
- Advisor
- Robert G. Eason
Abstract: This study examined the electrophysiological correlates of the preparatory processes intervening between the presentation of an attention-directing arrow cue and the presentation of a target stimulus. A paradigm used in earlier studies by Harter and associates and UNCG was employed wherin a peripherally-presented target stimulus followed by 600 ms a foveally-presented arrow cue directing attention to the right or left visual field. The subject was required to respond to the target within a designated time period if it appeared in the cued field. No response was required if the stimulus appeared in the uncued field. The primary purpose of the study was to determine the electrophysiological changes, as reflected in scalp recorded ERPs, which accompany the attentional preparatory processes developing during the course of the interstimulus interval (ISI). The time course of the attentional preparatory process was studied as a function of the length and certainty of length of the preparatory interval.
The effects of arrow direction, length of interstimulus interval, and certainty of interstimulus interval length on event related potentials occurring during the course of the interstimulus interval
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Created on 1/1/1995
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Additional Information
- Publication
- Dissertation
- Language: English
- Date: 1995
- Subjects
- Evoked potentials (Electrophysiology)
- Visual evoked response