Journal of Autism and Developmental Disorders

, Volume 32, Issue 6, pp 513–518

Eye Movement Abnormality Suggestive of a Spatial Working Memory Deficit Is Present in Parents of Autistic Probands

  • Dianne L. Koczat
  • Sally J. Rogers
  • Bruce F. Pennington
  • Randal G. Ross
Article

Abstract

Autistic probands exhibit impaired spatial accuracy and impaired response suppression errors during a delayed oculomotor response task. Family members of autistic probands, and thus the possible familial nature of these deficits, have not been assessed. Eleven parents of autistic probands and 17 adults from unaffected families, ages 25–50 years, completed oculomotor delayed-response tasks. Parents of autistic probands demonstrated poorer spatial accuracy than the comparison group (p = .002), with no significant differences between groups on percentage of premature saccades or latency of remembered saccades. Spatial working memory deficits, as measured by the delayed oculomotor response task, appear to be familial in families with an autistic proband. These deficits deserve further evaluation as a potential endophenotypic marker for genetic risk for autism.

Endophenotype saccade autism 

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Copyright information

© Plenum Publishing Corporation 2002

Authors and Affiliations

  • Dianne L. Koczat
    • 1
  • Sally J. Rogers
    • 1
  • Bruce F. Pennington
    • 2
  • Randal G. Ross
    • 1
    • 3
  1. 1.Department of PsychiatryUniversity of Colorado Health Sciences CenterDenver
  2. 2.Department of PsychologyUniversity of DenverDenver
  3. 3.Department of PsychiatryDenver Veterans Administration Medical CenterDenver

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