Increased heartbeat-evoked potential during REM sleep in nightmare disorder.
NeuroImage. Clinical 2019 Lampros Perogamvros, Hyeong-Dong Park, Laurence Bayer et al.
Nightmares are characterized by the experience of strong negative emotions occurring mainly during REM sleep. Some people suffer from nightmare disorder, which is defined by the repeated occurrence of nightmares and by significant distress in wakefulness. Yet, whether frequent nightmares relate to a general increase in emotional reactivity or arousal during sleep remains unclear. To address...