Using the Psychomotor Vigilance task tool to measure sleep inertia in idiopathic hypersomnia


  • The Psychomotor Vigilance Task (PVT) is a reliable and objective tool for measuring sleep inertia in patients with idiopathic hypersomnia (IH) and other sleep disorders.

Why this matters

  • Sleep inertia (difficulty waking up and “getting going” after sleep or naps) is a frequent symptom of IH, which can significantly impair a person’s quality of life.

  • Research of sleep inertia has mainly included healthy subjects and studies in patients with hypersomnolence conditions are lacking.

  • This is the first study investigating sleep inertia after nocturnal awakening in IH using the PVT tool, which has never been tested in IH.