The Impact of Real-time fMRI Feedback on Response to Nicotine Cues
试验速览
- 阶段
- 不适用
- 状态
- 终止
- 入组人数
- 44
- 试验地点
- 1
研究概览
简要总结
The purpose of this study is to develop a technique to provide feedback of brain activity and to use this technique to reduce levels of craving in nicotine dependent smokers. The researchers will use a brain scan called functional magnetic resonance imaging (MRI). MRI uses magnets to take pictures of your brain. Functional MRI measures brain blood flow that is related to brain activity. This measure of brain activity can be presented or "feedback" to volunteers.
详细描述
There are three total visits for this study. Details of each visit are listed below.
Screening/Assessment Visit:
This evaluation will include interviews, questionnaires, computerized testing, urine drug screen, breath sample for carbon monoxide level and alcohol and physical examination. If accepted into this study, you will then be scheduled for a biofeedback and an imaging session. Both smokers and nonsmoking controls will go through the screening process.
Biofeedback Session:
You will be asked to participate in a biofeedback session scheduled for 60 minutes. You will be comfortably seated and a sensor to measure your temperature will be placed on a finger of your non-dominant hand. You will be asked to make changes in your skin temperature based on feedback from the monitoring system. Your responses to the biofeedback session will be compared to your responses to feedback in the scanner. Both smokers and nonsmoking controls will go through the biofeedback session.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 60 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- 未提供
排除标准
- •(all participants):
- •Meets the Diagnostic and Statistical Manual (DSM)-IV criterion for lifetime or current substance dependence except for nicotine dependence.
- •Any psychoactive substance abuse within the last 30 days as evidenced by subject report or urine drug screen.
- •Use of other tobacco products.
- •Current use of nicotine replacement therapy, bupropion, varenicline, or other smoking cessation treatment.
- •Healthy volunteers must not have had more than experimental use of cigarettes.
- •Meets DSM-IV criteria for current axis I disorders of major depression, panic disorder, obsessive compulsive disorder, post-traumatic stress syndrome, bipolar affective disorder, schizophrenia, or any other psychotic disorder or organic mental disorder. The rationale for excluding them is that symptoms from these disorders may affect dependent variables and complicate interpretation of the data.
- •Current suicidal ideation with plan or homicidal ideation.
- •Need for maintenance or acute treatment with any psychoactive medication including anti-seizure medications which could potentially interfere with fMRI.
- •Clinically significant medical problems that would impair participation or limit ability to participate in scan.
- •Sexually active females of child-bearing potential who are pregnant (by urine HCG), nursing, or who are not using a reliable form of birth control.
- •Has current charges pending for a violent crime (not including Driving Under the Influence (DUI) related offenses).
- •Persons with ferrous metal implants or pacemaker since fMRI will be used.