| Trials are now being conducted to see whether there was a way to keep astronauts in a sleeplike state for days or weeks using temperature without any ill effects, something that may be required for deep space travel. |
| Hypnosis is a sleeplike and passive state that is nevertheless attentive and concentrated. |
| One well-known and well-studied sleeplike state is called nyctinasty, or night movement. |
| He wrote up three cases of patients with this type of stroke and their sleeplike behavior for the medical literature nearly 20 years ago. |
| He was then able to see clearly, and for the first time he looked down at his best friend and saw him in a sleeplike state. |
