wakefulness

On the other hand, it has not been fully elucidated the protein kinases that suppress sleep and the dephosphorylation enzymes that control sleep and wakefulness.

There’s a phase between wakefulness and sleep known as hypnagogia, during which we may experience hallucinations and our thoughts become illogical and meandering.

It reflects how nerve cells, or neurons, in the brain's cortex respond to stimulation and plays a key role in cognitive functions like learning and memory, information processing, decision making, motor control, wakefulness and sleep.

Importantly, this improvement was unique to those who actually fell asleep -- the macaques that experienced quiet wakefulness without falling asleep did not show the same performance boost.

If there’s no other private refuge at home, “establish a distinct microenvironment for wakefulness and sleep,” Strauss said.