“ A lack of oxygen (hypoxia) during sleep, which can happen spontaneously during brief pauses in respiration (apnea), ordinarily sets off a powerful cardiorespiratory excitation, as well as arousal.
„ Magamise ajal ilmnev hapnikuvaegus (hüpoksia), mida võib spontaanselt esineda lühikeste hingamispauside (apnoe) ajal, käivitab tavapäraselt kardiorespiratoorse erutuse ja ka ärkamise.