September 2015
Volume 15, Issue 12
Free
Vision Sciences Society Annual Meeting Abstract  |   September 2015
EEG markers of reduced visual short-term memory capacity in adult attention deficit/hyperactivity disorder
Author Affiliations
  • Iris Wiegand
    Center for Visual Cognition, Department Psychology, University of Copenhagen General and Experimental Psychology, Department of Psychology, Ludwig-Maximilians-University, Munich
  • Beate Kilian
    Department of Psychiatry and Psychotherapy, Ludwig-Maximilians-University Munich
  • Kristina Hennig-Fast
    Department of Psychiatry and Psychotherapy, Ludwig-Maximilians-University Munich
  • Hermann Müller
    General and Experimental Psychology, Department of Psychology, Ludwig-Maximilians-University, Munich
  • Thomas Töllner
    General and Experimental Psychology, Department of Psychology, Ludwig-Maximilians-University, Munich
  • Kathrin Finke
    General and Experimental Psychology, Department of Psychology, Ludwig-Maximilians-University, Munich
Journal of Vision September 2015, Vol.15, 79. doi:10.1167/15.12.79
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      Iris Wiegand, Beate Kilian, Kristina Hennig-Fast, Hermann Müller, Thomas Töllner, Kathrin Finke; EEG markers of reduced visual short-term memory capacity in adult attention deficit/hyperactivity disorder. Journal of Vision 2015;15(12):79. doi: 10.1167/15.12.79.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
Abstract

Attention deficit hyperactivity disorder (ADHD) persists frequently into adulthood. The disease is associated with difficulties in many cognitive tasks, which are assumed to be caused by neurobiologically-based basal dysfunctions. A reduction in visual working memory storage capacity has recently been claimed a testable endophenotype of ADHD. This study aimed at identifying brain abnormalities underlying this deficit by combining parameter-based assessment with electrophysiology. We compared unmedicated adult ADHD patients and demographically matched, healthy controls. We found reduced storage capacity in the patient group and delineated neural correlates of the deficit by analyzing ERP amplitudes according to (1) differences between patients and controls and (2) individual’s performance level of storage capacity K: First, the contralateral delay activity (CDA) was higher for individuals with high compared to individuals with lower storage capacity. The component differed between patients and controls only in an early time window (eCDA), in which activity correlated with patients’ symptom ratings of hyperactivity/impulsivity. Second, a broadly distributed central positivity (CP) was higher in individuals with higher compared to lower storage capacity. A later section of the CP was further overall increased in the group of ADHD patients relative to controls. Together, the findings indicate that ADHD patients show disease-specific changes in brain mechanisms underlying visual storage capacity, characterized by deficient encoding and maintenance, and increased recruitment of control processes.

Meeting abstract presented at VSS 2015

×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×