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Use of a Modified STROOP Test to Assess Color Discrimination Deficit in Parkinson's Disease
Objective: To objectively measure color vision dysfunction in idiopathic Parkinson's disease (iPD) using an easily administered, essentially free, modified Stroop test. Methods: Sixty-one iPD patients and 26 age-matched controls (HC) were enrolled after IRB approval and performed congruent (CST...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2018
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6143680/ https://www.ncbi.nlm.nih.gov/pubmed/30258399 http://dx.doi.org/10.3389/fneur.2018.00765 |
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author | Langston, Rebekah G. Virmani, Tuhin |
author_facet | Langston, Rebekah G. Virmani, Tuhin |
author_sort | Langston, Rebekah G. |
collection | PubMed |
description | Objective: To objectively measure color vision dysfunction in idiopathic Parkinson's disease (iPD) using an easily administered, essentially free, modified Stroop test. Methods: Sixty-one iPD patients and 26 age-matched controls (HC) were enrolled after IRB approval and performed congruent (CST) and incongruent (IST) modified Stroop tests consisting of 40 words in 10 colors arranged in a 5 x 8 grid. The scorer was blinded to participant diagnosis. Errors on IST were defined as type 1 (written word reported rather than color) or type 2 (color reported different from the written word or its color). Results: The iPD group and the control group completed testing with similar CST performance. On the IST, 75.4% of iPD patients had type 2 errors (p = 0.001, OR 4.907, 95%CI 1.838–13.097) compared to 38.5% HC, with a positive predictive value of 82%. The mean number of type 2 errors was also higher in the iPD group, even with MoCA scores as a covariate in the analysis. Type 1 errors were not significantly different between the groups. A univariate logistic regression model with age, gender, MoCA, normalized IST completion time and the presence/absence of type 2 errors also resulted in type 2 errors as the only significant factor in the equation (p = 0.026). Conclusions: The modified Stroop test incorporated into the clinical evaluation of a patient may provide a quick and inexpensive objective measure of a non-motor feature of iPD, which could help in the clinical diagnosis of iPD in conjunction with the motor assessments currently used by neurologists. |
format | Online Article Text |
id | pubmed-6143680 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-61436802018-09-26 Use of a Modified STROOP Test to Assess Color Discrimination Deficit in Parkinson's Disease Langston, Rebekah G. Virmani, Tuhin Front Neurol Neurology Objective: To objectively measure color vision dysfunction in idiopathic Parkinson's disease (iPD) using an easily administered, essentially free, modified Stroop test. Methods: Sixty-one iPD patients and 26 age-matched controls (HC) were enrolled after IRB approval and performed congruent (CST) and incongruent (IST) modified Stroop tests consisting of 40 words in 10 colors arranged in a 5 x 8 grid. The scorer was blinded to participant diagnosis. Errors on IST were defined as type 1 (written word reported rather than color) or type 2 (color reported different from the written word or its color). Results: The iPD group and the control group completed testing with similar CST performance. On the IST, 75.4% of iPD patients had type 2 errors (p = 0.001, OR 4.907, 95%CI 1.838–13.097) compared to 38.5% HC, with a positive predictive value of 82%. The mean number of type 2 errors was also higher in the iPD group, even with MoCA scores as a covariate in the analysis. Type 1 errors were not significantly different between the groups. A univariate logistic regression model with age, gender, MoCA, normalized IST completion time and the presence/absence of type 2 errors also resulted in type 2 errors as the only significant factor in the equation (p = 0.026). Conclusions: The modified Stroop test incorporated into the clinical evaluation of a patient may provide a quick and inexpensive objective measure of a non-motor feature of iPD, which could help in the clinical diagnosis of iPD in conjunction with the motor assessments currently used by neurologists. Frontiers Media S.A. 2018-09-12 /pmc/articles/PMC6143680/ /pubmed/30258399 http://dx.doi.org/10.3389/fneur.2018.00765 Text en Copyright © 2018 Langston and Virmani. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Neurology Langston, Rebekah G. Virmani, Tuhin Use of a Modified STROOP Test to Assess Color Discrimination Deficit in Parkinson's Disease |
title | Use of a Modified STROOP Test to Assess Color Discrimination Deficit in Parkinson's Disease |
title_full | Use of a Modified STROOP Test to Assess Color Discrimination Deficit in Parkinson's Disease |
title_fullStr | Use of a Modified STROOP Test to Assess Color Discrimination Deficit in Parkinson's Disease |
title_full_unstemmed | Use of a Modified STROOP Test to Assess Color Discrimination Deficit in Parkinson's Disease |
title_short | Use of a Modified STROOP Test to Assess Color Discrimination Deficit in Parkinson's Disease |
title_sort | use of a modified stroop test to assess color discrimination deficit in parkinson's disease |
topic | Neurology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6143680/ https://www.ncbi.nlm.nih.gov/pubmed/30258399 http://dx.doi.org/10.3389/fneur.2018.00765 |
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