Dream Recall Frequency and Sleep in Patients with Rapid Eye Movement Sleep Behavior Disorder

OBJECTIVES: The dream recall and sleep of patients with rapid eye movement sleep behavior disorder (RBD) were not sufficiently studied. We hypothesized that RBD patients have frequent dream recall with poor sleep quality, and investigated the relationship between the dream recall frequency and sleep quality in RBD patients compared to controls. METHODS: We analyzed 81 drug naïve patients [RBD (+), 64.6±8.3 y, 57 males] and 81 age and gender matched patients with sleep disturbances without RBD [RBD (−), 63.7±7.3 y, 57 males]. All completed Pittsburgh sleep quality index (PSQI), insomnia severity index (ISI), Epworth sleepiness scale and Beck depression inventory. The 5-point rating scale was used to categorize dream recall frequency of most recent month (0=never, 4=very frequent). RESULTS: In RBD (+), dream recall frequency was much higher [frequent dreaming, 77.2% vs. 35.4%], and subjective sleep quality was much better [PSQI, 6.36±3.26 vs. 8.71±4.69]. Insomnia severity was much less in RBD (+) (ISI, 9.13±5.86) than RBD (−) (12.43±7.62). No significant differences were found in sleep parameters except lower N2 sleep % in RBD (+). The relationship between dream recall frequency and sleep was not significant in RBD (+), yet, a positive correlation was noted in RBD (−). CONCLUSIONS: RBD (+) had better sleep quality despite higher frequency of dream recall compared to RBD (−). Also dream recall was not related to their sleep quality in RBD (+), which suggests that RBD patients may have different sleep perception about their sleep and sleep quality.

Dream Recall Frequency among Patients in a Psychiatric Outpatient Clinic in Ile-Ife; Nigeria

Aim: The aim of this study was to find out if the frequency of dream recall among neuropsychiatric patients on psychotropic drugs was significantly different from that of healthy individuals. Methods: The study was done on 53 neuropsychiatric patients with different diagnoses who were on medication and 144 healthy individuals. The number of participants in each group who recalled their dreams and those who did not were compared and analyzed statistically for any significant difference. Results: Thirty-five out of the 53 neuropsychiatric patients and 133 out of the 144 healthy individuals were able to recall their dreams. A significantly (p 0.001) higher proportion of the healthy individuals compared to neuropsychiatric patients on medications were able to recall their dreams. Conclusions: This study has shown that neuropsychiatric patients on medications may have reduced dream episodes or that their ability to remember their dreams may be impaired. A combination of both factors is not unlikely. Thus, the patients have reduced dream recall frequency (DRF) compared to healthy subjects. There might also be individuals who do not dream.