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Mindfulness training and exercise differentially impact fear extinction neurocircuitry
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Mindfulness training and exercise differentially impact fear extinction neurocircuitry
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Mindfulness training and exercise differentially impact fear extinction neurocircuitry
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Journal Article
Mindfulness training and exercise differentially impact fear extinction neurocircuitry
2024
Overview
The ability to extinguish a maladaptive conditioned fear response is crucial for healthy emotional processing and resiliency to aversive experiences. Therefore, enhancing fear extinction learning has immense potential emotional and health benefits. Mindfulness training enhances both fear conditioning and recall of extinguished fear; however, its effects on fear extinction learning are unknown. Here we investigated the impact of mindfulness training on brain mechanisms associated with fear-extinction learning, compared to an exercise-based program.
We investigated BOLD activations in response to a previously learned fear-inducing cue during an extinction paradigm, before and after an 8-week mindfulness-based stress reduction program (MBSR,
= 49) or exercise-based stress management education program (
= 27).
The groups exhibited similar reductions in stress, but the MBSR group was uniquely associated with enhanced activation of salience network nodes and increased hippocampal engagement.
Our results suggest that mindfulness training increases attention to anticipatory aversive stimuli, which in turn facilitates decreased aversive subjective responses and enhanced reappraisal of the memory.
