Mescaline's pharmacological mechanisms resemble those of other classical psychedelics such as psilocybin and LSD. Consumption appears safe, with most intoxications being mild and easily treatable. The substance may offer clinical benefits, including improvements in mental well-being and potential to help overcome alcoholism. This article is part of a special issue on psilocybin research.
Dream reports occur after awakenings from all sleep stages, not just REM sleep. In a nap study with 10 healthy young adults, dream recall length, measured by total word count, was greater after REM sleep than after brief NREM sleep periods (10 seconds and 1 minute), but recall length did not differ among NREM awakenings of varying durations. Delta EEG activity, an indicator of sleep depth, was lower after REM than after longer NREM periods, while Beta activity did not vary. The consistent recall length across NREM conditions suggests that arousal level alone does not determine dream report length; memory processing or limitations of EEG as an arousal measure may explain the longer REM reports.