NonREM sleep mentation in chronically-treated persons with schizophrenia.
This study examined the laboratory dream content reported by 14 patients with schizophrenia and 15 controls, with a focus on reports obtained from NonREM sleep. Both the controls' and patients' frequency of dream recall following awakenings from NonREM and REM sleep were similar to values reported for healthy participants. Patients' NonREM sleep narratives were shorter than those from controls. When compared to their reports from REM sleep, both groups' NonREM sleep reports included significantly fewer words and reportable items. The controls were more likely to report a subjective feeling of bizarreness for their REM sleep reports as compared to their NonREM sleep reports. This difference was not observed in patients with schizophrenia. Taken together, these findings suggest few differences between the NonREM sleep mentation of patients with schizophrenia and of controls and that sleep stage cognitive style is comparable in both groups, with NonREM sleep reports being more thought-like, less elaborate and bizarre than REM sleep reports.
Centre de Recherche Fernand-Seguin, Neurodevelopmental Disorders Program, Hôpital Rivière-des-Prairies, 7070 Boulevard Perras, Montréal, Québec, Canada H1E 1A4.
Félix-Antoine
FA
Lusignan
Roger
R
Godbout
Marie-Josée
MJ
Dubuc
Anne-Marie
AM
Daoust
Jean-Pierre
JP
Mottard
Antonio
A
Zadra
D000328:Adult; D014150:Antipsychotic Agents / Q000627:therapeutic use; D001364:Awareness; D002908:Chronic Disease; D004325:Dreams; D005260:Female; D006801:Humans; D008297:Male; D011939:Mental Recall; D017286:Polysomnography; D012016:Reference Values; D012559:Schizophrenia / Q000175:diagnosis* / Q000188:drug therapy; D012565:Schizophrenic Psychology; D012894:Sleep Stages; D012895:Sleep, REM; D055815:Young Adult
D014150:Antipsychotic Agents