Distinct Whole-Body Movements in Response to Alcohol and Sexual Content in Alcohol Use Disorder

Area of Science:

• Psychology
• Neuroscience
• Embodied Cognition

Background:

• Spontaneous approach-avoidance responses are crucial for understanding psychopathological conditions like alcohol use disorder (AUD).
• Previous research yielded inconsistent results, potentially due to methodological variations in tasks and outcome measures.

Purpose of the Study:

• To investigate sensorimotor approach-avoidance responses in individuals with AUD using a posturometric measure.
• To differentiate between abstinent and relapsing patients with AUD based on their motor responses to alcohol and sexual cues.

Main Methods:

• Utilized whole-body/posturometric changes to assess spontaneous leaning movements (approach/avoidance).
• 51 male patients with AUD and 29 male controls stood still in response to alcohol and sexual visual stimuli over 12 seconds.
• Patients with AUD were categorized as
• abstainers
• or
• relapsers
• based on 2-week abstinence post-discharge.

Main Results:

• No significant difference in forward/backward micromovements was observed between patients with AUD and controls when viewing alcohol or sexual content.
• Patients who relapsed showed significantly increased backward leaning in response to alcohol cues (p = 0.002).
• Relapsing patients exhibited more forward leaning during exposure to sexual content compared to abstainers (p < 0.001).

Conclusions:

• Distinct spontaneous movement patterns differentiate abstinent and relapsing individuals with AUD.
• These findings align with theories of action tendencies and provide insights into AUD relapse mechanisms.