Brain activity changes tracked anxiety improvement, without a clear difference between treatments
In patients with generalized anxiety disorder receiving mindfulness training or fluoxetine, brain activity relationships were associated with symptom improvement. The analysis did not establish statistically significant differences between treatment groups.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Among these patients with generalized anxiety disorder, a stronger relationship between activity in particular brain regions was associated with symptom improvement after mindfulness training or fluoxetine. Some associations appeared different within the treatment groups, but the direct statistical test did not establish group differences. These findings describe brain–symptom correlations rather than prove how either treatment works.
The imaging analysis involved a small patient sample, and the abstract does not report treatment duration, association sizes, or confidence intervals. Correlations cannot establish that the brain changes caused symptom improvement.
What the scans measured
Functional connectivity describes how closely activity in different brain regions varies together. Increased connectivity between the left amygdala and right orbitofrontal cortex, two brain regions, was associated with greater symptom improvement after the interventions.
Separate patterns did not establish separate mechanisms
The researchers found different brain–symptom association patterns within the mindfulness and medication groups. However, their test of differences between groups was not statistically significant. This leaves treatment-specific mechanisms uncertain and does not compare the treatments' clinical effectiveness.
The original publication
Neural basis of GAD improvement following a mindfulness-based intervention and antidepressant treatment: an analysis from a randomized controlled trial.
Costa MA, Bado P, Schneider M et al.
Psychiatry Res · 2025
- PubMed ID
- 40680692
- Record checked
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