This basic role of sleep is also indirectly substantiated by the fact that almost all the animal species, from fruit flies to the biggest mammals , share a behavioral state that can be defined as "sleeplike
." Thus, if sleep subserves all these aspects of animal life, it would be seen as a crucial survival-directed drive, so that chronic or repeated sleep deprivation in rodents brings cellular and molecular changes in the brain  while in humans, it can dramatically disrupt several high-order cognitive functions [75, 80-83].
The system allows gamers to be suspended in a sleeplike
state until they return from their avatars.
They're hibernating, or spending the winter in a sleeplike
Merriam Webster (5) define trance states as "stupor, daze; a sleeplike
state (as of deep hypnosis) usually characterized by partly suspended animation with diminished or absent sensory and motor activity; a state of profound abstraction or absorption".
The animals come here to hibernate, or be in a dormant sleeplike
state, through the cold months.
DSL species rise at night-some to waters as shallow as 30 feet deep-for a variety of reasons: Some are avoiding the daytime surface hunters; others are avoiding the nocturnal hunters of the DSL who don't rise (like lancetfish); still others are saving energy by spending their days in a sleeplike
state prompted by the frigid waters.
Lab fruit flies droop into less-responsive, sleeplike
periods mostly at night.
A unique type of sedation may be produced in which patients can be aroused readily and then return to a sleeplike
state when left alone.
It turns out, a hotel employee had seen the 10-year-old on the third floor and when the boy in his sleeplike
trance said he had been locked out, the employee went and got the key to the room the boy was trying to enter, and let him in, without checking to see if his parents were actually in there.
As she engages in her work, a ghostlike figure steps out of her body and makes sleeplike
In this unlikely place, researchers are putting the seeds from flowering plants and trees in a sleeplike
state called suspended animation.
and deathlike states; subterranean spaces and live burial; doubles; ...