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CONTRIBUTIONS OF A COMPELLED-RESPONSE PARADIGM TO THE ANTISACCADE TASK FOR PARSING PERCEPTION, MOTOR PLANNING, AND COGNITION IN HUMANS

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abstract
For decades, scientists have been interested in studying cognition and how it is that our decisions are manipulated with its introduction into decision planning. To date, little is known about the neural correlates from which cognition originates and how long it takes to integrate such information. The present human psychophysical study combines the classic antisaccade task, which requires subjects to make an eye movement away from a suddenly appearing peripheral stimulus, and the compelled saccade task, which dissociates perceptual evaluation and motor-planning phases of decision-making. The marriage of these two tasks, the compelled antisaccade (CAS) task, allows further parsing of cognition from the decision-making process. The compelled constraints of the CAS task forces subjects to begin motor-planning prior to cue information and then to update the motor plan once perceptual information integrates. Using the tachometric curve—a psychometric function that tracks performance as a function of processing time (the time from cue-signaling to saccade onset), showed a unique feature in each subject’s ability to perform the task. This feature is interpreted as a bottom-up attentional pull to cue, corrected by the effect of top-down cognition that drives a rise in performance which can be accurately measured over time.
subject
Antisaccade
Cognition
Compelled-Response
Human
Psychophysics
Saccade
contributor
Steinberg, Benjamin (author)
Stanford, Terrence R. (committee chair)
Rowland, Benjamin A. (committee member)
Constantinidis, Christos (committee member)
date
2018-01-17T09:35:19Z (accessioned)
2017 (issued)
degree
Neurobiology & Anatomy (discipline)
2020-01-16 (liftdate)
embargo
2020-01-16 (terms)
identifier
http://hdl.handle.net/10339/89869 (uri)
language
en (iso)
publisher
Wake Forest University
title
CONTRIBUTIONS OF A COMPELLED-RESPONSE PARADIGM TO THE ANTISACCADE TASK FOR PARSING PERCEPTION, MOTOR PLANNING, AND COGNITION IN HUMANS
type
Thesis

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