Decentering the Self? Reduced Bias in Self- vs. Other-Related Processing in Long-Term Practitioners of Loving-Kindness Meditation

Long-term practitioners of loving-kindness meditation show a reduced difference in brain responses to their own face versus a close other's face, measured by the P300 event-related potential. In 12 meditators and 12 matched controls, the typical pattern of a larger P300 for self than other was smaller in meditators at parietal brain sites. Among meditators, more meditation practice correlated with smaller self-other differences, and across both groups, smaller differences were linked to higher self-reported compassion. A brief loving-kindness meditation induction did not further alter this brain response. The findings suggest that extensive meditation practice may blur the neural distinction between self and other and is associated with greater compassion.

Study at a glance

Abstract

Research in social neuroscience provides increasing evidence that self and other are interconnected, both on a conceptual and on an affective representational level. Moreover, the ability to recognize the other as "like the self" is thought to be essential for social phenomena like empathy and compassion. Meditation practices such as loving-kindness meditation (LKM) have been found to enhance these capacities. Therefore, we investigated whether LKM is associated to an increased integration of self-other-representations. As an indicator, we assessed the P300 event-related potential elicited by oddball stimuli of the self-face and a close other's face in 12 long-term practitioners of LKM and 12 matched controls. In line with previous studies, the self elicited larger P300 amplitudes than close other. This effect was reduced in the meditation sample at parietal but not frontal midline sites. Within this group, smaller differences between self- and other-related P300 were associated with increasing meditation practice. Across groups, smaller P300 differences correlated with self-reported compassion. In meditators, we also investigated the effect of a short LKM compared to a control priming procedure in order to test whether the state induction would additionally modulate self- vs. other-related P300. However, no effect of the priming conditions was observed. Overall, our findings provide preliminary evidence that prolonged meditation practice may modulate self- vs. other-related processing, accompanied by an increase in compassion. Further evidence is needed, however, to show if this is a direct outcome of loving-kindness meditation.