Associations between cognitive performance and sigma power during sleep in children with attention-deficit/hyperactivity disorder, healthy children, and healthy adults

Autoři: Arnika Bestmann aff001;  Annette Conzelmann aff002;  Lioba Baving aff001;  Alexander Prehn-Kristensen aff001
Působiště autorů: Department of Child and Adolescent Psychiatry and Psychotherapy, Centre for Integrative Psychiatry, University Hospital Schleswig-Holstein, Kiel, Germany aff001;  Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University of Tübingen, Tübingen, Germany aff002;  PFH—Private University of Applied Sciences, Department of Psychology (Clinical Psychology II), Göttingen, Germany aff003
Vyšlo v časopise: PLoS ONE 14(10)
Kategorie: Research Article


Sigma power during sleep is associated with cognitive abilities in healthy humans. We examined the relationship between sigma power in sleep EEG and intelligence and alertness in schoolchildren with ADHD (n = 17) in comparison to mentally healthy children (n = 16) and adults (n = 23). We observed a positive correlation between sigma power in sleep stage 2 and IQ in healthy adults but a negative correlation in children with ADHD. Furthermore, children with ADHD showed slower reaction times in alertness testing than both control groups. In contrast, only healthy children displayed a positive correlation between sigma power and reaction times. These data suggest that the associations between sigma power and cognitive performance underlie distinct developmental processes. A negative association between IQ and sigma power indicates a disturbed function of sleep in cognitive functions in ADHD, whereas the function of sleep appears to be matured early in case of motor-related alertness performance.

Klíčová slova:

ADHD – Cognition – Electroencephalography – Child health – Children – Reaction time – Sleep – Sleep disorders


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