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Department of Neurology, Yale-New Haven Hospital, New Haven, CT, USA.
Hyperarousal Scale scores for certain self-reported behaviors reportedly correlate with EEG arousal measures. We tested whether an insomnia subject group had different Hyperarousal Scale scores compared with hypersomnia, delayed sleep phase syndrome, procrastinator or normal subject groups. Compared with 139 normal subjects, mean scores for a group of 256 insomnia subjects was significantly 1.2 S.D. higher on Hyperarousal total scale score, 0.82 S.D. higher on React subscale score and 0.85 S.D. higher on Introspectiveness subscale score. The insomnia group median Extreme score was 2.25 times that of the normal group. These self-report findings suggest that insomnia subjects may be more responsive generally. All sleep disorder groups had increased total Hyperarousal scores, although these increases were accounted for by different scale items. The procrastinator group had Hyperarousal score patterns that generally differed from those of the other groups.
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