Environments as Smoking Cues: Imaging Brain Substrates, Developing New Treatments (CameraCue)

Study Overview
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Brief Summary
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The overarching goals of this proposal are to 1) identify the network of brain regions specifically activated by personal smoking environment cues and 2) to evaluate the effects of exposure to these cues on smoke self-administration and subjective reactivity. The results of this study will inform the development of novel and more efficacious cue-exposures therapies targeted at helping smokers quit smoking and will provide novel mechanism information regarding the influence of environmental context on drug taking. The investigator hypothesizes that cue-exposure treatments (CETs), in which drug use is prevented during exposure to drug cues (e.g. lit cigarette) have been of limited efficacy in part because they have not included cues representative of the contexts in which drug use occurs. By demonstrating that context cues have a differential and robust influence on brain and behavioral responses, we will have provided a substantial basis for including such stimuli in the context of treatment. At the same time, we will have identified novel mechanisms by which such stimuli promote continued drug use and relapse.

Official Title
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Environments as Smoking Cues: Imaging Brain Substrates, Developing New Treatments

Conditions
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Smoking, Healthy

Intervention / Treatment
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* Behavioral: Quit Smoking 6 hours
* Behavioral: Quit Smoking 24 hours


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: generally healthy between the ages of 18 and 55 smoking an average of 5 cigarettes per day for at least one year breath CO (carbon monoxide) level > 8 ppm (if ≤ 8 ppm, then NicAlert Strip > 2) no interest in quitting smoking for the duration of time required for the experiment right-handed as measured by a three-item scale used in our laboratory ability to identify 4 personal smoking and 4 personal non-smoking places Exclusion Criteria: inability to attend all required experimental sessions significant health problems use of psychoactive medications use of smokeless tobacco current alcohol or drug abuse use of illegal drugs as measured by urine drug screen current use of nicotine replacement therapy or other smoking cessation treatment presence of conditions that would make MRI unsafe (e.g., pacemaker)

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 55 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Intervention/Treatment |
| --- |
|Behavioral: Quit Smoking 6 hours|participants will quit smoking 6 hours prior to the cue-exposure sessions|
|Behavioral: Quit Smoking 24 hours|participants will quit smoking 24 hours prior to the fMRI scan|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Signal Change in Functional Magnetic Resonance Imaging (fMRI) BOLD Signal between Personal Environment Pictures Relative to Standard Environment Pictures | During fMRI scanning participants will view pictures of personal and standard smoking and non-smoking environments; and also pictures of smoking-related and non-smoking related objects | following 24 hours of smoking abstinence | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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smoking environment, cue-exposure, cigarettes, nicotine, fMRI