Study shows compassion meditation changes the brain

The scans revealed significant activity in the insula - a region near the frontal portion of the brain that plays a key role in bodily representations of emotion - when the long-term meditators were generating compassion and were exposed to emotional vocalizations. The strength of insula activation was also associated with the intensity of the meditation as assessed by the participants.

"The insula is extremely important in detecting emotions in general and specifically in mapping bodily responses to emotion - such as heart rate and blood pressure - and making that information available to other parts of the brain," says Davidson, also co-director of the HealthEmotions Research Institute.

Activity also increased in the temporal parietal juncture, particularly the right hemisphere. Studies have implicated this area as important in processing empathy, especially in perceiving the mental and emotional state of others.

"Both of these areas have been linked to emotion sharing and empathy," Davidson says. "The combination of these two effects, which was much more noticeable in the expert meditators as opposed to the novices, was very powerful."

The findings support Davidson and Lutz's working assumption that through training, people can develop skills that promote happiness and compassion.

"People are not just stuck at their respective set points," he says. "We can take advantage of our brain's plasticity and train it to enhance these qualities."

The capacity to cultivate compassion, which involves regulating thoughts and emotions, may also be useful for preventing depression in people who are susceptible to it, Lutz adds.

"Thinking about other people's suffering and not just your own helps to put everything in perspective," he says, adding that learning compassion for oneself is a critical first step in compassion meditation.

The researchers are interested in teaching compassion meditation to youngsters, particularly as they approach adolescence, as a way to prevent bullying, aggression and violence.

"I think this can be one of the tools we use to teach emotional regulation to kids who are at an age where they're vulnerable to going seriously off track," Davidson says.

Compassion meditation can be beneficial in promoting more harmonious relationships of all kinds, Davidson adds.

"The world certainly could use a little more kindness and compassion," he says. "Starting at a local level, the consequences of changing in this way can be directly experienced."

Lutz and Davidson hope to conduct additional studies to evaluate brain changes that may occur in individuals who cultivate positive emotions through the practice of loving-kindness and compassion over time.

EDITOR'S NOTE: After 7 p.m. CDT on March 26, the open-access article will be freely available in full at http://www.plosone.org/doi/pone.0001897.