Elucidating the Effect of a Brief Drinking Intervention Using Neuroimaging: A Preliminary Study

Area of Science:

• Neuroscience
• Addiction Research
• Behavioral Psychology

Background:

• Brief interventions show promise for reducing alcohol consumption in heavy drinkers not seeking treatment.
• Neuroimaging can reveal the neurobiological impacts of behavioral interventions on brain systems related to treatment response.
• Limited research exists on whether psychosocial interventions can alter neural cue reactivity and subsequently reduce drinking in this population.

Purpose of the Study:

• To investigate the impact of a brief intervention on drinking outcomes.
• To assess the intervention's effect on neural reactivity to alcohol cues using functional magnetic resonance imaging (fMRI).
• To determine if neural alcohol cue reactivity can prospectively predict drinking behaviors.

Main Methods:

• Non-treatment-seeking heavy drinkers were randomized to a brief interview intervention or an attention-matched control group.
• Participants underwent fMRI with an alcohol taste cue paradigm immediately after the intervention/control.
• Drinking outcomes, measured as percent heavy drinking days (PHDD), were assessed four weeks post-intervention.

Main Results:

• The brief intervention did not significantly affect PHDD at follow-up.
• No significant modulation of neural activation to alcohol cues versus water cues was observed due to the intervention.
• A significant association was found between neural response to alcohol taste cues and PHDD; greater reactivity in the precuneus and prefrontal cortex (PFC) correlated with fewer PHDD.

Conclusions:

• The brief intervention did not alter alcohol use or neural cue reactivity in this sample.
• Enhanced activation in the precuneus and PFC during alcohol cue exposure prospectively predicted reduced alcohol consumption.
• These findings suggest that neural substrates in the precuneus and PFC are critical for mediating the influence of alcohol cues on drinking behavior.