Immersive Dreaming Elevates Perceived Restfulness

A new PLOS Biology study with 44 adults shows that feeling of deep sleep isn’t governed only by slow brain waves. During repeated awakenings in NREM2, immersive, emotionally intense dreams were linked to a stronger subjective sense of deep sleep, even when wake-like brain activity was present, while abstract, thought-like dreams correlated with shallower sleep. This suggests the dream experience itself can shape perceived sleep depth and may help explain variability in restfulness across different sleep durations.