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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Sleep in schizophrenic patients on and off haloperidol therapy. Clinically stable vs relapsed patients.

We examined the state-dependent contribution of neuroleptic withdrawal and psychotic relapse in influencing sleep measures. Eighteen clinically stable male schizophrenic patients taking haloperidol were studied with 3 nights of polysomnography for baseline measures and again after neuroleptic withdrawal. Sleep measures were also obtained at the point of relapse (n = 9) or after a 6-week drug-free period if the patient remained clinically stable (n = 9). Neuroleptic withdrawal led to a global deterioration of rapid eye movement and non-rapid eye movement sleep and a reduction of rapid eye movement latency in both groups. Relapsers differed from nonrelapsers in that they had a larger decrease in total sleep time, sleep efficiency, total non-rapid eye movement sleep, and stage 2 sleep. The level of psychosis was inversely correlated with sleep efficiency, total sleep time, and stage 4 sleep in the drug-free patients. Our data suggest that clinical state needs to be identified in sleep studies of drug-free patients.[1]


  1. Sleep in schizophrenic patients on and off haloperidol therapy. Clinically stable vs relapsed patients. Neylan, T.C., van Kammen, D.P., Kelley, M.E., Peters, J.L. Arch. Gen. Psychiatry (1992) [Pubmed]
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