Research Square
November 20, 2023
Ottone Baccaredda Boy, Giuseppe Pierpaolo Merola, Andrea Patti et al.
Abstract the present paper describes the preliminary results of a study centered on the effect of salience alterations and cannabis use on the intensity of psychotic symptoms in adolescent and adult cohorts. The exploratory analysis focused on cross-sectional scores at psychometric questionnaires of 64 participants allocated to 4 different subgroups. A hierarchical pattern in the...
Journal of Psychoactive Drugs
November 1, 2013
Joanna Moncrieff, David B. Cohen, Sally Porter
59 citations
The psychoactive effects of psychiatric medications have been obscured by the presumption that these medications have disease-specific actions. Exploiting the parallels with the psychoactive effects and uses of recreational substances helps to highlight the psychoactive properties of psychiatric medications and their impact on people with psychiatric problems. We discuss how psychoactive...
Journal of Substance Use
April 1, 2010
Jean‐Jacques Breton, Christophe Huỳnh, Sylvie Raymond et al.
6 citations
The case of a bipolar 17-year-old girl who developed prolonged vivid hallucinations and a dissociative state involving self-destructive behaviour following the use of Salvia divinorum is presented. The herb has mostly short-term (10–15 min) hallucinogenic properties. Salvatorin A, the main active compound, is a highly selective agonist of the kappa-opioid receptor. The plant is available at...
Perceptual and Motor Skills
June 1, 1972
David B. Cohen
Data from three separate studies support the hypothesis that contentless and dreamless reports obtained in dream-recall experiments are functionally, as well as descriptively, different phenomena. Distributions of percentages of contentless and dreamless reports (a) for different phases of the menstrual cycle, (b) over a three-day recording period, and (c) for length of total sleep time were...
Perceptual and Motor Skills
April 1, 1972
David B. Cohen
It was predicted that diary and questionnaire measures of dream recall would be greater for long than for short sleep time. Total sleep time was a significant predictor variable for dream recall for males only. Results for females were in the predicted direction but consistently nonsignificant. This study confirms previously published findings on the significance of total sleep time for males...
Perceptual and Motor Skills
December 1, 1971
David B. Cohen
In comparison to psychophysiological variables such as stage of sleep and auditory arousal thresholds, psychological variables such as anxiety, “repression,” and cognitive style have demonstrated little or no relationship to frequency and amount of dream recall. Two studies yielded no support for an hypothesized correlation between amount of dream recall and short-term memory for verbally or...