Neuroimaging Decision Making and Response Inhibition During Smoking Abstinence
Completed · Not applicable
Conditions studied: Smoking
In brief
The broad objective of this proposal is to identify functional neuroanatomical correlates of impairments in response inhibition during smoking abstinence. We will measure changes in performance and regional blood oxygenation levels using functional magnetic resonance imaging (fMRI)while smokers complete tasks designed to assess decision making and response inhibition. Our primary hypothesis is that smoking abstinence will result in impaired response inhibition accompanied by decreases in blood-oxygenation-level-dependent (BOLD) fMRI signal in brain regions associated with these cognitive processes including frontal cortex and the ventral striatum. Abstinence may also result in performance-related increases in activation in brain regions associated with effortful processing including the anterior cingulate cortex in effort to compensate for deficits in other regions.
Key facts
- Study ID
- NCT00672256
- Run by
- Duke University
- People needed
- 62
- Starts
- 2007-01-01
- Expected to finish
- 2009-03-01
- Last updated by the study team
- 2014-07-23
Who can join
Age: 18 and older, up to 50. Sex: any. Healthy volunteers: accepted.
You may qualify if…
- Smoker subjects must have
- smoked an average of 10 cigarettes per day for two continuous years of a brand that delivers (by Federal Trade Commission rated yields) at least 0.5 mg nicotine
- have an expired air carbon monoxide reading of at least 10 ppm.
- must be in general good health
- Non-smoker subjects must have
- smoked less than 50 cigarettes in their lifetime
- have not smoked in the last six months
- have an expired air carbon monoxide reading of less than or equal to 5 ppm.
- must be in general good health.
You may not qualify if…
- major medical condition
- anything that would make participation unsafe (e.g., have pacemaker or other metallic implant) or uncomfortable (e.g., chronic pain)
- psychiatric condition
- suffering from claustrophobia
- current alcohol or drug abuse
- smokeless tobacco use, or use of nicotine replacement therapy or other smoking cessation treatment
Where it is running
- Duke University Medical Center — Durham, North Carolina, United States
Full record on ClinicalTrials.gov
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