Brain Imaging of Cognition Inn Schizophrenia and Depression
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 发起方
- 入组人数
- 90
- 试验地点
- 1
- 主要终点
- Measuring brain activity using resting-state and task-based functional MRI
研究概览
简要总结
Schizophrenia and depression are among the most disabling disorders in all of medicine. Cognitive deficits play a key role in patients' disability, affecting their capacity to contribute actively to society by sustaining employment or academic activity. Moreover, cognitive difficulties tend to persist even after the stabilization of other clinical symptoms. Verbal memory and emotion regulation are two important cognitive domains that are impaired in schizophrenia and depression and are associated with patients' functional outcomes. In this study, brain imaging is used to investigate the brain mechanisms underlying these cognitive deficits in these populations.
详细描述
This study uses Functional Magnetic Resonance Imaging (fMRI) which is a technique that takes a 3D picture of the brain using magnetic fields. It allows researchers to estimate how active different regions of the brain are. The aim of this study is to use fMRI to better understand the cognitive problems that individuals living with schizophrenia, schizoaffective disorder, or depression experience.
The study will involve three visits at The Royal's Institute of Mental Health Research in Ottawa, Canada. Each visit will last about 2.5 hours long.
Visits 1 and 2: Participants are asked to fill out several questionnaires on a computer. Participants are also asked to answer some questions about their current and past mental health as well as perform some tasks involving general thinking skills.
Visit 3: Participants will complete a brain scan using fMRI. Throughout the experiment, participants will perform three short tasks in the fMRI scanner. Participants will use buttons to answer some questions in response to some words and pictures.
研究设计
- 研究类型
- Observational
- 观察模型
- Other
- 时间视角
- Cross Sectional
入排标准
- 年龄范围
- 18 Years 至 60 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •age 18-60 years
- •current Intelligence Quotient (IQ) > 70 as measured by the Wechsler Abbreviated Scale of Intelligence (WASI)
- •the ability to read and speak fluent English
- •a diagnosis of schizophrenia, schizoaffective or major depression disorder
- •stable medication for more than one month
排除标准
- •significant neurological or other medical disorders that may produce cognitive impairment
- •a recent history of substance abuse or dependence (within the past 3 months)
- •any magnetic resonance imaging (MRI) contraindications (e.g. metallic head implant, history of seizure, pacemaker)
- •decisional incapacity requiring a guardian
- •taking medications that are rated as Anticholinergic Burden (ACB) Score 3 (severe) or taking benzodiazepines on a daily basis
- •Finally, participants could not be severely symptomatic at the time of study enrolment to ensure that they could understand and complete all study assessments. This criterion was defined as a score ≤34 on the Montgomery-Åsberg Depression Rating Scale (MADRS; Montgomery & Åsberg, 1979) for the MDD group and a score ≤95 on the Positive and Negative Syndrome Scale (PANSS; Kay et al., 1987) for the SZ group.
结局指标
主要结局
Measuring brain activity using resting-state and task-based functional MRI
时间窗: Final Visit (Visit 3)
To better understand the mechanisms underlying cognitive problems in our populations of interest
次要结局
未报告次要终点
研究者
Synthia Guimond
Scientist
The Royal Ottawa Mental Health Centre