How Meditation Changes Your Brain: A Neuroscientist Explains
Do you struggle, like me, with monkey-mind? Is your brain also a little unsettled, restless, capricious, whimsical, fanciful, inconstant, confused, indecisive, or uncontrollable? That’s the definition of "monkey mind" I’ve been given!
If you need more motivation to take up this transformative practice, neuroscience research has shown that meditation and mindfulness training can cause neuroplastic changes to the gray matter of your brain.
A group of Harvard neuroscientists interested in mindfulness meditation have reported that brain structures change after only eight weeks of meditation practice.
Sara Lazar, Ph.D., the study’s senior author, said in a press release,
“Although the practice of meditation is associated with a sense of peacefulness and physical relaxation, practitioners have long claimed that meditation also provides cognitive and psychological benefits that persist throughout the day.”
To test their idea the neuroscientists enrolled 16 people in an eight-week mindfulness-based stress reduction course. The course promised to improve participants’ mindfulness and well-being, and reduce their levels of stress.
Everyone received audio recordings containing 45-minute guided mindfulness exercises (body scan, yoga, and sitting meditation) that they were instructed to practice daily at home. And to facilitate the integration of mindfulness into daily life, they were also taught to practice mindfulness informally in everyday activities such as eating, walking, washing the dishes, taking a shower, and so on. On average, the meditation group participants spent an average of 27 minutes a day practicing some form of mindfulness.
Magnetic resonance images (MRI scans) of everyone’s brains were taken before and after they completed the meditation training, and a control group of people who didn’t do any mindfulness training also had their brains scanned.
After completing the mindfulness course, all participants reported significant improvement in measures of mindfulness, such as "acting with awareness" and "non-judging."
What was startling was that the MRI scans showed that mindfulness groups increased gray matter concentration within the left hippocampus, the posterior cingulate cortex, the temporo-parietal junction, and the cerebellum. Brain regions involved in learning and memory, emotion regulation, sense of self, and perspective taking!
Britta Hölzel, the lead author on the paper says,
“It is fascinating to see the brain’s plasticity and that, by practicing meditation, we can play an active role in changing the brain and can increase our well-being and quality of life.”
Sarah Lazar also noted,
“This study demonstrates that changes in brain structure may underlie some of these reported improvements and that people are not just feeling better because they are spending time relaxing."
Sarah McKay, MSc, PhD, is a neuroscientist with a PhD from Oxford University. After moving to Australia in search of sunshine, she spent five years conducting neuroscience research before deciding to follow her bliss of talking about science rather than doing it. Now she combines raising her two little boys on Sydney’s Northern Beaches with writing about science, health and medicine, and blogging about neuroscience. Sarah specializes in breaking down neuroscience research into simple actionable steps to improve brain health. She provides neuroscience education to health and wellness professionals, blogs about intriguing neuroscientists and their work, and runs the Walking Book Club.