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A Psychophysiological Marker of Attention Deficit/Hyperactivity Disorder (ADHD)—Defining the EEG Consistency Index

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Abstract

This study continues our research to further validate the idea that ADHD (Attention Deficit/Hyperactivity Disorder) interferes with transition from one task to another and this interference can be quantified by a Consistency Index (CI) derived from a specific mathematical representation of EEG data. We reanalyze 32 previously reported data sets present new data for 35 boys and girls, ages 7–12, ADHD or control. Each data set contains EEG, recorded and digitized while participants perform consecutive 10-min tasks: video, reading, and math. For boys, the CI in ADHD was four times lower than in controls, p < .005, for girls this difference was two times, p < .05. ADHD/control classification based on the CI coincided with the DSM-IV criteria for 88% of the boys and for 67% of the girls. Post hoc analysis indicated that the classification utility of the CI diminished with age. A CI below 40% could be a discriminating, reliable, and reproducible marker of ADHD in young boys.

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Authors and Affiliations

  1. Center for Behavioral Medicine Research, University of Virginia Health System, Charlottesville, Virginia, USA

    Boris Kovatchev & Daniel Cox

  2. University of Virginia School of Education, Charlottesville, Virginia, USA

    Rebecca Hill & Ronald Reeve

  3. Department of Mathematical Sciences, Sweet Briar College, Sweet Briar, Virginia, USA

    Raina Robeva

  4. Department of Psychology, Sweet Briar College, Sweet Briar, Virginia, USA

    Tim Loboschefski

Authors
  1. Boris Kovatchev
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  2. Daniel Cox
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  3. Rebecca Hill
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  4. Ronald Reeve
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  5. Raina Robeva
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  6. Tim Loboschefski
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Kovatchev, B., Cox, D., Hill, R. et al. A Psychophysiological Marker of Attention Deficit/Hyperactivity Disorder (ADHD)—Defining the EEG Consistency Index. Appl Psychophysiol Biofeedback 26, 127–140 (2001). https://doi.org/10.1023/A:1011339206875

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