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مهمة النفسي اليقظة (PVT)، و "المعيار الذهبي" من النعاس قياس
Psychomotor vigilance task (PVT), is the "gold standard" of measuring sleepiness. The PVT measures your sustained attention using a short, 2-minute task. You can log your performance over time, and see how your PVT performance changes compared to how much sleep you receive.