Abstract:Insomnia disorder is one of the most common sleep disorders leading to significant distress and lower quality of life. Researchers have proposed that multiple factors such as hyperarousal, conditioning, worry or cortical arousal have roles in predisposition to, initiation, and perpetuation of insomnia disorder. Previously, only few studies investigated the differential effects of intrusive visual imagery and verbal thoughts on pre-sleep arousal or insomnia severity. The aim of the current study was to examine … Show more
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