Breath-Counting Task Enhances the Sensitivity of Fear Acquisition.

A brief breath-counting mindfulness exercise can improve how people learn to distinguish dangerous from safe cues during fear conditioning. In a discriminative fear conditioning experiment, participants who practiced breath counting gave lower shock-expectancy ratings to a safety signal (CS−) than those who read freely, indicating less overgeneralization of fear to safe stimuli. The mindfulness group also showed reduced skin conductance responses overall, yet the groups did not differ in their overall fear acquisition effect. The findings suggest that breath-counting tasks enhance sensitivity to conditioned fear acquisition by reducing exaggerated fear responses to safety signals, offering insights for preventing anxiety disorders.

Study at a glance

Abstract

Fear acquisition is an essential survival mechanism for humans; however, the role and mechanisms of mindfulness training in this process remain unclear. This study employed a discriminative fear conditioning paradigm to investigate the effects and mechanisms of short-term mindfulness training, exemplified by the breath-counting task, on fear acquisition. The experiment consisted of three consecutive phases: intervention, habituation, and acquisition. During the intervention phase, each participant was assigned to one of two conditions: the breath-counting task group (experimental group) or the free reading group (control group). The results indicated that the mindfulness group exhibited significantly lower expectancy ratings for shocks to the CS- compared to the control group, while no significant difference was found in the shock ratings for CS+. Regarding skin conductance responses, although the mindfulness group showed a significantly reduced fear response to CS relative to the free reading group, there was no significant difference in overall fear acquisition effects between the two groups. The above findings indicate that breath-counting tasks enhance sensitivity to the acquisition of conditioned fear by reducing exaggerated fear responses to safety signals. The conclusions of this study further elucidate the conflicting results regarding the effects of mindfulness training on fear acquisition and provide novel perspectives for the prevention of anxiety spectrum disorders.