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Reaction Time and Parkinson's Disease

Title: Reaction Time and Parkinson's Disease: Implications for Cognitive and Motor Processing.
Name(s): Holler, Jennifer, author
Stierwalt, Julie, professor directing thesis
LaPointe, Leonard, committee member
Heald, Gary, committee member
School of Communication Science and Disorders, degree granting department
Florida State University, degree granting institution
Type of Resource: text
Genre: Text
Issuance: monographic
Date Issued: 2006
Publisher: Florida State University
Place of Publication: Tallahassee, Florida
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: The investigators of this study set out to determine if extended Reaction Time (RT) in people with Parkinson disease is due to impairments in the ability to initiate and execute motor movements, a deficit in cognitive processing function, or a combination of the two. Specifically, the purpose of this study was to examine the nature of the relation between RT and cognition on two tests, one that measured RT and another that did not. We proposed that if RT is an index of cognitive processing, then it should correlate negatively with measures of cognition (i.e. as RT increases, cognitive measures decrease). If increased RT in Parkinson disease is purely a function of motor impairment, then the pattern of RT for individuals with Parkinson disease should mirror that of a control group but with generally longer RTs. Participants were given a general measure of cognition (paper/pencil test) and a computerized battery of cognitive tasks that incorporated RT and accuracy across varying levels of complexity. Results indicated overall lower scores on measures of general cognition for the group with Parkinson disease in comparison with scores of the control group. The Subject group also demonstrated lengthier reaction times on the computerized measures (CalCAP) than that of the Control group. However, the Subject group's results on the DRS-2 did not negatively correlate with measures of RT making it difficult to determine if deficits in cognition played a role in the extended RT. Group comparisons revealed significant differences on a number of the measures both with regard to RT and accuracy. These results could indicate cognitive component in increased RT of the Subject group. However, the results obtained were far from conclusive and overall we were unable to determine the underlying cause of extended RT in our subject group.
Identifier: FSU_migr_etd-3974 (IID)
Submitted Note: A Thesis submitted to the Department of Communication Disorders in partial fulfillment of the requirements for the degree of Master of Science.
Degree Awarded: Summer Semester, 2006.
Date of Defense: June 30, 2006.
Keywords: Motor Processing, Bradyphrenia, Bradykinesia, Reaction Time, Parkinson Disease, Cognitive Processing
Bibliography Note: Includes bibliographical references.
Advisory Committee: Julie Stierwalt, Professor Directing Thesis; Leonard LaPointe, Committee Member; Gary Heald, Committee Member.
Subject(s): Communication
Communicative disorders
Persistent Link to This Record:
Owner Institution: FSU

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Holler, J. (2006). Reaction Time and Parkinson's Disease: Implications for Cognitive and Motor Processing. Retrieved from