The Impact of Real-time fMRI Feedback on Response to Nicotine Cues
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Nicotine Dependence
- Sponsor
- Medical University of South Carolina
- Enrollment
- 44
- Locations
- 1
- Status
- Terminated
- Last Updated
- 9 years ago
Overview
Brief Summary
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.
Detailed Description
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. Imaging Visit: The imaging visit should last approximately 2 hours. You will also be asked to refrain from using alcohol and any street drugs for 24 hours and from using any marijuana for 3 days prior to the visit. If you smoke, you will be asked not to smoke for 2 hours prior to the scanning session. Evaluation will include an interview, questionnaires, and a breath carbon monoxide level. If you are a woman, a urine pregnancy test will be completed prior to the exam. If you smoke, you will be asked to complete questionnaires that focus on your craving and withdrawal symptoms for cigarettes. These questionnaires will take approximately 15 minutes to complete.
Investigators
Eligibility Criteria
Inclusion Criteria
- Not provided
Exclusion Criteria
- •(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.
Outcomes
Primary Outcomes
Not specified