Transient insomnia hypnotic medications

For many years experts have concluded that transient insomnia is the clearest indication for the use of hypnotic medications (8). Because systematic study of a transient phenomenon is difficult, models of transient insomnia have been developed, particularly to test hypnotic efficacy. Sleep is predictably disrupted by either phase shifts in the timing of sleep (9), sleep in an unfamiliar environment (10), or both factors (11). 

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