Neurological reason for doing mindfulness meditation

Published on June 23, 2007 at 4:05 AM · No Comments

Talking with a therapist or friend, writing in a journal, help us to feel better! A new brain imaging study by UCLA psychologists reveals why verbalizing our feelings makes our sadness, anger and pain less intense.

Another study, with the same participants and three of the same members of the research team, combines modern neuroscience with ancient Buddhist teachings to provide the first neural evidence for why mindfulness the ability to live in the present moment, without distraction seems to produce a variety of health benefits.

When people see a photograph of an angry or fearful face, they have increased activity in a region of the brain called the amygdala, which serves as an alarm to activate a cascade of biological systems to protect the body in times of danger. Scientists see a robust amygdala response even when they show such emotional photographs subliminally, so fast a person can't even see them.

But does seeing an angry face and simply calling it an angry face change our brain response" The answer is yes, according to Matthew D. Lieberman, UCLA associate professor of psychology and a founder of social cognitive neuroscience.

"When you attach the word angry," you see a decreased response in the amygdala," said Lieberman, lead author of the study, which appears in the current issue of the journal Psychological Science.

The study showed that while the amygdala was less active when an individual labeled the feeling, another region of the brain was more active: the right ventrolateral prefrontal cortex. This region is located behind the forehead and eyes and has been associated with thinking in words about emotional experiences. It has also been implicated in inhibiting behavior and processing emotions, but exactly what it contributes has not been known.

"What we're suggesting is when you start thinking in words about your emotions labeling emotions that might be part of what the right ventrolateral region is responsible for," Lieberman said.

If a friend or loved one is sad or angry, getting the person to talk or write may have benefits beyond whatever actual insights are gained. These effects are likely to be modest, however, Lieberman said.

"We typically think of language processing in the left side of the brain; however, this effect was occurring only in this one region, on the right side of the brain," he said. "It's rare to see only one region of the brain responsive to a high-level process like labeling emotions."

Many people are not likely to realize why putting their feelings into words is helpful.

"If you ask people who are really sad why they are writing in a journal, they are not likely to say it's because they think this is a way to make themselves feel better," Lieberman said. "People don't do this to intentionally overcome their negative feelings; it just seems to have that effect. Popular psychology says when you're feeling down, just pick yourself up, but the world doesn't work that way. If you know you're trying to pick yourself up, it usually doesn't work self-deception is difficult. Because labeling your feelings doesn't require you to want to feel better, it doesn't have this problem."

Thirty people, 18 women and 12 men between ages of 18 and 36, participated in Lieberman's study at UCLA's Ahmanson-Lovelace Brain Mapping Center. They viewed images of individuals making different emotional expressions. Below the picture of the face they either saw two words, such as angry and fearful," and chose which emotion described the face, or they saw two names, such as Harry and 'sally," and chose the gender-appropriate name that matched the face.

Lieberman and his co-authors UCLA assistant professor of psychology Naomi Eisenberger, former UCLA psychology undergraduate Molly Crockett, former UCLA psychology research assistant Sabrina Tom, UCLA psychology graduate student Jennifer Pfeifer and Baldwin Way, a postdoctoral fellow in Lieberman's laboratory used functional magnetic resonance imaging to study subjects brain activity.

"When you attach the word angry," you see a decreased response in the amygdala," Lieberman said. "When you attach the name Harry," you don't see the reduction in the amygdala response.

"When you put feelings into words, you're activating this prefrontal region and seeing a reduced response in the amygdala," he said. "In the same way you hit the brake when you're driving when you see a yellow light, when you put feelings into words, you seem to be hitting the brakes on your emotional responses."

As a result, an individual may feel less angry or less sad.

This is ancient wisdom," Lieberman said. "Putting our feelings into words helps us heal better. If a friend is sad and we can get them to talk about it, that probably will make them feel better."

The right ventrolateral prefrontal cortex undergoes much of its development during a child's preteen and teenage years. It is possible that interaction with friends and family during these years could shape the strength of this brain region's response, but this is not yet established, Lieberman said.

One benefit of therapy may be to strengthen this brain region. Does therapy lead to physiological changes in the right ventrolateral prefrontal cortex" Lieberman, UCLA psychology professor Michelle Craske and their colleagues are studying this question.

Combining Buddhist Teachings and Modern Neuroscience

After the participants left the brain scanner, 27 of them filled out questionnaires about mindfulness." Mindfulness meditation, which is very popular in Southeast Asia and elsewhere, originates from early Buddhist teachings dating back some 2,500 years, said David Creswell, a research scientist with the Cousins Center for Psychoneuroimmunology at the Semel Institute for Neuroscience and Human Behavior at UCLA.

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