Stéphane Potvin

Principaux champs de recherche
Chercheur(e)s associé(e)s
Organisations associées

Projets de recherche récents

CRISM-Quebec-Maritimes: Research on interventions in drug misuse

2014/15-2020/21 • $2,374,845 • PI,CO,Other
Substance misuse remains a significant global public health problem which carries a heavy burden for abusers and their families alike. This disorder is indeed associated with suffering and severe health problems in patients, distress among family members, as well as tremendous costs to society....

Cannabis smoking and psychotic expériences in adolescents: A longitudinal brain Imaging study

2016/17-2020/21 • $705,111 • PI,CO
Cannabis smoking increases the risk for psychosis. Although the effects are small at the population level, growing evidence indicates that they are large in those with premorbid vulnerabilities and those who initiate cannabis use in early adolescence. What remain unclear are the biological...

A randomized controlled trial comparing Avatar Therapy to Cognitive Behavioral Therapy in Schizophrenia with treatment refractory hallucinations

2018/19-2020/21 • $561,549 • PI,CO
Schizophrenia is associated with long-lasting health, social and financial burden for patients, families, caregivers and society. According to the World Health Organization, this burdensome illness is one of the top 10 causes of disability in developed countries. The costs associated with...

Brain connectivity-based optimization of non-invasive brain stimulation to improve cognitive symptoms in schizophrenia

2019/20-2020/21 • $217,897 • PI,CO
Schizophrenia is a severe mental illness that affects around 250,000 Canadians. Beyond positive symptoms such as hallucinations or delusions, and negative symptoms such as blunted affect or social withdrawal, cognitive impairments (for instance, deficits in short- term memory and sustained...

Un essai clinique randomisé et contrôlé, à simple insu, comparant la Thérapie Avatar à la Thérapie Cognitivo-Comportementale pour les hallucinations auditives verbales chez les patients atteints de schizophrénie

2020/21 • $35,000 • Scholarship/Fellowship,Other
Plusieurs personnes atteintes de schizophrenie entendent des voix qui les persecutent, ce qui nuit a leur fonctionnement. Imaginez-vous essayer de vivre normalement alors que vous entendez des voix que personne d'autre ne semble remarquer: "Tu n'es bon a rien!", "Tu es laid!". Bien qu'il existe...

Canadian Cannabis and Psychosis Research Team (CCPRT)

2020/21 • $13,134 • PI,CO,Other
While Cannabis is considered a relatively safe psychoactive substance, cannabis-related psychosis risk is a significant public health concern, for which no evidence-based screening or intervention strategies exist. Psychosis often follows heavy cannabis use, particularly if use starts early and...

The endogenous cannabinoid system is involved in pain-reward opponent mechanisms

2016/17-2019/20 • $112,000 • PI
Pain-reward interactions are complex. Several experimental studies have shown that a wide range of pleasant stimuli produce analgesic effects in humans. More recently, it has been shown that the cessation of pain stimulation produces pleasant responses in humans. Preliminary functional...

Predicting future primary psychotic disorders in youth with methamphetamine-psychosis disorder.

2019/20 • $100,000 • PI,CO,Other
People who abuse stimulant-type drugs like methamphetamines can develop various problems, including temporary or even longterm psychotic symptoms (e.g. paranoia, hearing voices). Many will develop these symptoms but only for a brief period of time, whereas others can develop more severe symptoms...

Targeted cannabis prevention for youth at high risk for psychosis

2017/18 • $100,000 • PI,CO
One major public health concern associated with the legalisation of cannabis is the potential to encourage more cannabis use amongst youth and consequently increase risk for substance-induced psychosis in the population. Two decades of epidemiologic research suggests that heavy and early onset...

CRISM-QUÉBEC: Réseau Québécois -Recherche sur les interventions en abus de substances/Research on Interventions for substance misuse

2013/14 • $49,832 • PI,CO,Other
Substance misuse remains a significant global public health problem which carries a heavy burden for abusers and their families alike. This disorder is associated with suffering and severe health problems in patients, distress among family members, as well as tremendous costs to society....

Electrophysiology and brain imaging of normal and abnormal pain modulatory systems

2010/11-2012/13 • $403,125 • PI,CO
Pain results from the activation of brain networks by a stimulus that is at least potentially damaging to the tissue. However, the pain system also involves top-down regulatory processes that normally facilitate or inhibit pain transmission from the spinal cord to the brain. These systems are...

The clinical and biological correlates of cannabis craving in schizophrenia, and its treatment with trans-cranial magnetic stimulation

2010/11 • $89,816 • PI,CO
During the 1990s, cannabis smoking has been on the rise among teenagers and young adults in Canada. In the general population, about 10% of those who try cannabis may develop a substance use disorder (abuse or dependence). The likelihood of developing a cannabis use disorder is increased by 3 to...

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