Lucid Dreaming Training for insomnia (LDT-I) may help reduce insomnia severity, anxiety, and depression. In an open-label trial of 48 adults with Insomnia Disorder, participants completed four training modules over two weeks. One month later, insomnia severity, anxious symptomology, and depressive symptomology all showed significant reductions. The effect on insomnia severity was large. The authors caution that these preliminary results require further testing before LDT-I can be established as a non-pharmacological treatment for insomnia.
Science fiction frequently uses sleep and dreams to probe questions about consciousness, reality, and technology. This article identifies recurring Sci-Fi themes such as hypno-pedagogics, space hibernation, brain-machine interfaces, electrostimulation, genetic engineering, and the effects of substances on sleep and dreams. The authors compare these fictional concepts with current sleep science to assess their future feasibility. They also examine whether Sci-Fi has inspired real sleep research or merely mirrors existing scientific topics with added fiction.
Patients with primary insomnia have dreams with less positive emotions and more negative content compared to good sleepers, consistent with their waking experiences. In a five-night polysomnography study with 12 patients and 12 controls aged 30–45, dream recall frequency was similar between groups when collected via forced REM-sleep awakenings. Controls' dreams tended to include more positive emotions, while patients' dreams were characterized by more negative elements. Subjectively, controls rated their dreams as more pleasant, joyful, and vivid. Elevated negative dream content was associated with lower sleep efficiency in insomnia. The findings suggest hyperarousal may worsen presleep negative mentation, contributing to poorer sleep quality.