Abstract:
OBJECTIVE:Drug-related cue exposure elicits craving and risk for relapse during recovery. Transcranial direct current stimulation is a promising research tool and possible treatment for relapse prevention. Enhanced functional neuroconnectivity is discussed as a treatment target. The goal of this research was to examine whether transcranial direct current stimulation affected cortical hemodynamic indicators of functional connectivity, craving, and heart rate variability during smoking-related cue exposure in non-treatment-seeking smokers. METHOD:In vivo smoking cue exposure supported by a 2mA transcranial direct current stimulation (anode: dorsolateral prefrontal cortex, cathode: orbitofrontal cortex; placebo-controlled, randomized, double-blind) in 29 (age: M=25, SD=5) German university students (smoking at least once a week). Cue reactivity was assessed on an autonomous (heart rate variability) and a subjective level (craving ratings). Functional near-infrared spectroscopy measured changes in the concentration of deoxygenated hemoglobin, and seed-based correlation analysis was used to quantify prefrontal connectivity of brain regions involved in cue reactivity. RESULTS:Cue exposure elicited increased subjective craving and heart rate variability changes in smokers. Connectivity between the orbitofrontal and dorsolateral prefrontal cortex was increased in subjects receiving verum compared to placebo stimulation (d=0.66). Hemodynamics in the left dorsolateral prefrontal cortex, however, increased in the group receiving sham stimulation (η2=0.140). Transcranial direct current stimulation did not significantly alter craving or heart rate variability during cue exposure. CONCLUSION:Prefrontal connectivity - between regions involved in the processing of reinforcement value and cognitive control - was increased by anodal transcranial direct current stimulation during smoking cue exposure. Possible clinical implications should be considered in future studies.
journal_name
Drug Alcohol Dependjournal_title
Drug and alcohol dependenceauthors
Kroczek AM,Häußinger FB,Rohe T,Schneider S,Plewnia C,Batra A,Fallgatter AJ,Ehlis ACdoi
10.1016/j.drugalcdep.2016.09.006subject
Has Abstractpub_date
2016-11-01 00:00:00pages
123-127eissn
0376-8716issn
1879-0046pii
S0376-8716(16)30903-6journal_volume
168pub_type
杂志文章,随机对照试验abstract:BACKGROUND:Adults with mood and anxiety disorders have an increased likelihood of being prescribed opioids. The influence of other mental disorders, such as psychotic and attention disorders, on opioid prescribing patterns is less known. METHODS:We studied a population-representative sample of 166,927 outpatient visit...
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