REM sleep

Women also entered REM sleep, characterised by high levels of brain activity and vivid dreaming, earlier than men.

The neuron density of its forebrain — the region engaged with planning, sensory processing, and emotional responses, and on which REM sleep is largely dependent — is comparable to that of primates.

Porreca led a research team that used preclinical mouse models to evaluate sleep disruption, as the sleep architecture of mice closely matches that of people, including cycles of deep sleep, REM sleep and light sleep.

If I’m lucky, I’m still in REM sleep then!

REM sleep, which happens in this phase when dreaming normally occurs, is also critical for memory formation, emotional processing, and brain development.