“…These findings emphasize that tests targeting complex neurocognitive tasks, rather than simple neurocognitive tasks, are more sensitive to the deficit in patients with ID, and provided preliminary evidence that symptomatic individuals ID and hyperarousal state are more prone to neurocognitive deficits than ID sufferers who are asymptomatic and not physiologically hyperaroused. Short sleep duration in subjects with ID may indicate a severe phenotype of ID (Vgontzas, Fernandez-Mendoza, Liao, & Bixler, 2013) and is associated with systemic hypertension (Bathgate & Fernandez-Mendoza, 2018;Bathgate, Edinger, Wyatt, & Krystal, 2016;Vgontzas, Liao, Bixler, Chrousos, & Vela-Bueno, 2009), impaired heart rate variability (de Zambotti, Covassin, Min Tona, Sarlo, & Stegagno, 2011), diabetes mellitus (Vgontzas, Liao, Pejovic, et al, 2009), reduced brain metabolite concentration (Miller et al, 2017) and even increased mortality . The current study was prompted by the aforementioned growing evidence of the detrimental effect of hyperarousal and objective short sleep duration on individuals with ID.…”