Key result
Emotion-based impulsivity traits (negative and positive urgency) significantly correlated with resting-state fMRI ALFF in multiple prefrontal and cingulate regions in healthy volunteers.
Cross-Sectional (n=85)
Intrinsic brain activity in the default-mode network is associated with emotion-based impulsive behaviors in healthy humans.
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No immediate clinical implications for healthy individuals; leaves open whether these resting-state patterns extend to impulsivity disorders.
Negative urgency (NU) and positive urgency (PU) are implicated in several high-risk behaviors, such as eating disorders, substance use disorders, and nonsuicidal self-injury behavior. The current study aimed to explore the possible link between trait of urgency and brain activity at rest. We assessed the amplitude of low-frequency fluctuations (ALFF) of the resting-state functional magnetic resonance imaging (fMRI) signal in 85 healthy volunteers. Trait urgency measures were related to ALFF in the lateral orbitofrontal cortex, dorsolateral prefrontal cortex, ventral and dorsal medial frontal cortex, anterior cingulate, and posterior cingulate cortex/precuneus. In addition, trait urgency measures showed significant correlations with the functional connectivity of the posterior cingulate cortex/precuneus seed with the thalamus and midbrain region. These findings suggest an association between intrinsic brain activity and impulsive behaviors in healthy humans.
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Zhao et al. (2017) conducted a cross-sectional in Healthy volunteers (n=85). Emotion-based impulsivity traits (negative and positive urgency) was evaluated on Amplitude of low-frequency fluctuations (ALFF) of resting-state fMRI signal and functional connectivity. Emotion-based impulsivity traits (negative and positive urgency) significantly correlated with resting-state fMRI ALFF in multiple prefrontal and cingulate regions in healthy volunteers.
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