Cognitive-affective neural plasticity following active-controlled mindfulness intervention

Area of Science:

• Neuroscience
• Psychology
• Cognitive Science

Background:

• Mindfulness training (MT) is known to improve self-regulation.
• Neural mechanisms underlying MT's effects on self-regulation are not fully understood.
• Conflicting evidence exists regarding the roles of interoceptive salience and attentional control.

Purpose of the Study:

• To investigate the neural mechanisms of mindfulness training (MT) on self-regulation.
• To differentiate the roles of interoceptive salience and attentional control in MT.
• To examine the effects of a 6-week randomized MT intervention using an active control group.

Main Methods:

• Randomized controlled trial with an active control group over 6 weeks.
• Functional MRI (fMRI) and behavioral metacognition assessed during an affective Stroop task.
• Analysis of blood oxygenation level-dependent (BOLD) signals and behavioral performance.

Main Results:

• Mindfulness training (MT) group showed reduced affective Stroop conflict and increased dorsolateral prefrontal cortex activity.
• Both groups improved response inhibition, but only MT group showed this with increased practice.
• Greater practice correlated with improved response inhibition and recruitment of ACC, mPFC, and right anterior insula.

Conclusions:

• Active control is crucial for mindfulness training (MT) research.
• Neural mechanisms for MT are progressive and depend on practice duration.
• A personalized, context-dependent approach to MT may be more effective than a one-size-fits-all model.