People with type 1 narcolepsy who experience hypnagogic hallucinations (vivid dream-like sensations at sleep onset) show greater creative achievement and potential. In a study of 66 patients, spontaneous mind wandering was linked to creative success, but this link was strengthened by the presence of both sleep paralysis and hypnagogic hallucinations. These hallucinations also shaped patients' creative identity, which in turn predicted higher creative performance on a divergent thinking test (generating original solutions) and real-world creative achievement. The findings suggest that hypnagogic hallucinations trigger mind-wandering processes and influence self-concept, together boosting creativity in narcolepsy.
During the Italian COVID-19 lockdown, people with narcolepsy type-1 (NT1) reported more lucid dreams than matched controls, and those lucid dreams were linked to greater creativity and problem-solving during waking hours. The study compared 43 NT1 patients with 86 controls. NT1 patients had higher sleepiness, while controls had more sleep disturbances—a difference that disappeared after accounting for medication. Among NT1 patients, nightmare frequency correlated with female gender, longer sleep, and more wakefulness within sleep; dream recall, nightmares, and lucid dreams all correlated with sleepiness. The findings confirm a connection between lucidity and creativity in NT1 but cannot establish causality due to the small sample and cross-sectional design.
Bistable perception of ambiguous figures differs by sex and by which visual hemifield the stimulus is presented to, suggesting hemispheric asymmetries in conscious perception. In two experiments, 48 participants viewed Rubin's vase-faces figures projected to either the left and right or upper and lower visual hemifields for 180 seconds while eye movements were tracked. In the first experiment, males perceived face profiles for longer when stimuli were presented to the left visual field (processed by the right hemisphere) and the vase for longer in the right visual field, while females showed similar perception across hemifields. Males also more often experienced two different percepts simultaneously from identical stimuli. These effects were absent when stimuli were presented to upper and lower fields.