Sleep and transe both are quite similar interms of detachment from the external world but in sleep our identity is shifted towards the world of dreams onther hand trans is more associated with shift towards preconscious ( unfilled buisnesses , those available at immediate retrieval).Suggestibility which is an important component of hypnosis is effective at trance however at sleep we may respond to stimulation , get hynagogic and hypnopompic hallucinations but it is directly connected with the content of unconscious being reinforced. Trance can be described as a state of heightened attention towards particular stimular but sleeping does nt bring concentrated attention into play. The world of dreams is composed up of fragments thus we forget them immediately due to lack of logical connection hence state of sleep is used for relief but not for thereapatic outcomes.Sleep cycle is comprised up of stages of NREM and REM while in transe there is distinct stages of altered consciousness.