Abstract:Background: Frontocentral Spindling Excessive Beta (SEB), a spindle-likebeta-activity observed in the electroencephalogram (EEG), has beentransdiagnostically associated with more problems with impulse control andsleep maintenance. The current study aims to replicate and elaborate on thesefindings. Methods: Participants reporting sleep problems (n = 31) orAttention-Deficit/Hyperactivity Disorder (ADHD) symptoms (n = 48) wereincluded. Baseline ADHD-Rating Scale (ADHD-RS), Pittsburgh Sleep Quality Index(PSQI), Holland Sleep Disorder Questionnaire (HSDQ), and EEG were assessed.Analyses were confined to adults with frontocentral SEB. Results: Main effectsof SEB showed more impulse control problems (d = 0.87) and false positiveerrors (d = 0.55) in participants with SEB. No significant associations withsleep or interactions with Sample were observed. Discussion: This studypartially replicates an earlier study and demonstrates that participantsexhibiting SEB report more impulse control problems, independent of diagnosis.Future studies should focus on automating SEB classification and furtherinvestigate the transdiagnostic nature of SEB.
