Document Detail

Color vision in attention-deficit/hyperactivity disorder: A pilot visual evoked potential study.
MedLine Citation:
PMID:  25435188     Owner:  NLM     Status:  Publisher    
BACKGROUND: Individuals with attention-deficit/hyperactivity disorder (ADHD) are reported to manifest visual problems (including ophthalmological and color perception, particularly for blue-yellow stimuli), but findings are inconsistent. Accordingly, this study investigated visual function and color perception in adolescents with ADHD using color Visual Evoked Potentials (cVEP), which provides an objective measure of color perception.
METHOD: Thirty-one adolescents (aged 13-18), 16 with a confirmed diagnosis of ADHD, and 15 healthy peers, matched for age, gender, and IQ participated in the study. All underwent an ophthalmological exam, as well as electrophysiological testing color Visual Evoked Potentials (cVEP), which measured the latency and amplitude of the neural P1 response to chromatic (blue-yellow, red-green) and achromatic stimuli.
RESULT: No intergroup differences were found in the ophthalmological exam. However, significantly larger P1 amplitude was found for blue and yellow stimuli, but not red/green or achromatic stimuli, in the ADHD group (particularly in the medicated group) compared to controls.
CONCLUSION: Larger amplitude in the P1 component for blue-yellow in the ADHD group compared to controls may account for the lack of difference in color perception tasks. We speculate that the larger amplitude for blue-yellow stimuli in early sensory processing (P1) might reflect a compensatory strategy for underlying problems including compromised retinal input of s-cones due to hypo-dopaminergic tone.
Soyeon Kim; Tobias Banaschewski; Rosemary Tannock
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-11-26
Journal Detail:
Title:  Journal of optometry     Volume:  -     ISSN:  1989-1342     ISO Abbreviation:  J Optom     Publication Date:  2014 Nov 
Date Detail:
Created Date:  2014-12-1     Completed Date:  -     Revised Date:  2014-12-2    
Medline Journal Info:
Nlm Unique ID:  101482903     Medline TA:  J Optom     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2014 Spanish General Council of Optometry. Published by Elsevier Espana. All rights reserved.
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