bioRxiv (Cold Spring Harbor Laboratory)
April 21, 2025
Shikha Prashad, Andrew Paek, Lisa R. Fournier
1 citation
preprint
Abstract Chronic cannabis use is associated with cognitive impairment, but its impact on implicit motor learning is unclear. Implicit learning of movement sequences (i.e., their specific ordinal and temporal structure) is vital for performing complex motor behavior and lays the foundation for performing daily activities and interacting socially. We collected data from 30 individuals who used...
JAMA Psychiatry
April 9, 2025
Jessica Ahrens, Sabrina D. Ford, Betsy Schaefer et al.
This cohort study investigates the association between cannabis and the midbrain dopamine pathway involved in psychosis.
Psychiatry Research
April 1, 2025
Valerio Ricci, Stefania Chiappini, Giovanni Martinotti et al.
Epidemiological data have provided evidence that psychotic-like experiences (PLEs) occur in the general population without clinical impairment. According to the psychosis continuum hypothesis, PLEs are subject to multiple risk factors. This review synthesizes current research on biological, substance use-related, and environmental risk factors for PLEs in non-clinical populations....
European Psychiatry
April 1, 2025
P. Fuentes-Pérez, P. Cordero Andrés, C. Ovejas-Catalán et al.
IntroductionThe association between cannabis use and cognitive functioning in individuals experiencing a first episode of psychosis (FEP) is inconsistent, with some studies reporting deterioration (Bogaty et al. J Psychiatr Res 2018; 99:22-32), others indicating improved performance (Rodríguez-Sánchez et al. Schizophr Res 2010; 124:142-151), and some finding no difference.ObjectivesThis study...
Ethical Human Psychology and Psychiatry
April 1, 2025
John M. Spores
A retrospective sample of 20 adolescents without a history of psychosis was divided into two equal groups of 10: one with daily use of cannabis for 6 or more months and one without any history of cannabis or other substance use. The groups were matched on both sex and age. All 20 adolescents were administered the Rorschach Performance Assessment System (R-PAS), which were all determined to be...
European Psychiatry
April 1, 2025
C. Hjorthøj
AbstractI will present data from a range of Danish studies on both cannabis-induced psychosis and Danish epidemiological studies on the association between cannabis and psychotic disorders such as schizophrenia. A deeper understanding of these associations is important. If the consistent association that we have observed for many decades is indeed causal, then cannabis is perhaps the single...
European Psychiatry
April 1, 2025
H. Taipale
AbstractIntroductionCannabis-induced psychosis (CIP) is often assumed to resolve with sustained abstinence, although recent studies report adverse long-term outcomes, such as a high risk of diagnostic transition to schizophrenia. Cannabis is also known to increase relapse rate in individuals with psychotic disorders in general, and there is a lack of knowledge on optimal treatment of this...
Brain, Behavior, and Immunity
April 1, 2025
Samantha M. Ayoub, Sunitha Vemuri, Elizabeth B. Hoang et al.
HIV-associated neurocognitive impairment (NCI) is an untreated concern among people living with HIV (PLWH). Cannabis use in PLWH may complicate outcomes on cognition, with evidence to suggest function-dependent effects that are modulated by several factors including use patterns (e.g., frequency of use) and demographic influences (e.g., age). Animal studies can control for these factors. Here,...
European Psychiatry
April 1, 2025
E. Rognli
Abstract Background: Substance-induced psychosis is an acute psychotic condition occurring after substance use, where the psychotic symptoms are alleviated with abstinence. Some of those diagnosed with substance-induced psychosis later develop schizophrenia, and this transition occurs most often for psychosis induced by cannabis. This talk will present results from a register-based study...
Quality in Sport
March 21, 2025
Kacper Rusiński, Filip Klimas, Dorota Zatłoka-Mazur et al.
1 citation
Cannabis is one of the most widely used psychoactive substances globally. In several countries, including Canada, the Netherlands, certain U.S. states, and Australia, its possession is legal. With its growing popularity in recent years, the impact of cannabis on mental health has become a focal point of numerous scientific studies. The aim of this review was to summarize the current...