Neuroaffective reactivity profiles are associated with vulnerability to e-cigarette use

Area of Science:

• Neuroscience
• Addiction Science
• Psychology

Background:

• Assessing neuroaffective responses to motivationally salient stimuli.
• Examining vulnerability to cue-induced e-cigarette use in nicotine-naïve adults who smoke daily.

Purpose of the Study:

• To test if neuroaffective responses to salient stimuli predict vulnerability to cue-induced e-cigarette use.
• To hypothesize that a nicotine cue-dominant (C>P) reactivity profile indicates higher vulnerability than a pleasant cue-dominant (P>C) profile.

Main Methods:

• Utilized event-related potentials (ERPs) to measure neuroaffective reactivity to various cues in 36 participants.
• Calculated late positive potential (LPP) amplitude as an index of motivational salience.
• Employed k-means cluster analysis to define neuroaffective profiles and quantile regression to compare e-cigarette use frequency.

Main Results:

• K-means clustering identified two profiles: C>P (18 participants) and P>C (18 participants).
• Individuals with the C>P profile exhibited significantly higher e-cigarette use frequency compared to the P>C profile.
• Differences in puff counts remained significant across quantiles, indicating robust effects.

Conclusions:

• Individual differences in attributing motivational salience to drug cues predict vulnerability to cue-induced drug self-administration.
• Tailored treatments targeting identified neuroaffective profiles may enhance clinical outcomes for substance use disorders.