Brain response to sleep-related attentional bias after cognitive-behavioral therapy in individuals with insomnia symptoms

Almost half of adult population was reported to have subjective experience of insomnia symptom, making it one of the most common sleep disorders (1). The most widely accepted model of the psychophysiological insomnia is hyperarousal theory, which states difficulties in initiating and/or maintaining sleep due to global increases in cortical and physiological arousal across the sleep-wake cycle (2,3).