|Title||EYE MOVEMENT PERFORMANCE IN ATTENTION DEFICIT - HYPERACTIVITY DISORDER CHILDREN|
|Author, Co-Author||Dana Ziskrout, Hannu Laukkanen, Colleen Ichiyama|
Southern Hem I,II
|Abstract|| PURPOSE. Very little is known about the eye movement performance (EMP) of children with Attention Deficit-Hyperactivity Disorder (ADHD), a syndrome involving attentional impairments, impulsivity, and typically, motor overactivity. Underachievement in reading and math has been shown to be associated with ADHD. Because ADHD children have been described as having slower response times, more topographical errors, and below age expected results on pyschometric tests, we hypothesized that eye movement performance would also be below age expected. Since psychostimulants reportedly decrease errors, variability, and response time with ADHD children, eye movement performance was sampled with and without their regularly prescribed medication.
METHODS. 36 children age 8 to 13 with normal eyesight and hearing and who were taking psychostimulant medication for ADHD, were recruited for this study. The Developmental Eye Movement Test (DEM), Groffman Visual Tracing Test (GVTT), Peabody Picture Vocabulary Test (PPVT), and the Visagraph Eye Movement Analysis (VEMA), were administered to all subjects. Several months later 19 original subjects were retested after not having taken their respective medication(s) for 24 hours. RESULTS. Mean DEM percentiles for the medicated ADHD group was: 43.0 vertical, 41.6 horizontal, 46.3 ratio, and 48.8 for errors. Mean PPVT percentile was 57.4. Horizontal DEM subtest performance was significantly better for the 19 subjects while unmedicated. VEMA, GVTT, and PPVT performance did not significantly differ between medicated versus unmedicated conditions for these same subjects. CONCLUSION. Based upon DEM results, EMP for the medicated ADHD group was slightly below normal. Above average mean PPVT auding vocabulary performance suggests that the reduced EMP was not due to reduced ability. Surprisingly, horizontal subtest performance on the DEM was significantly better (pFACTORS AFFECTING DYNAMIC DISTANCE STEREOPSIS IN THE ATHLETIC POPULATIO
|Affiliation of Co-Authors|