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How Meditation Changes Your Brain

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http://news.harvard.edu/gazette/story/2011/01/eight-weeks-to-a-better-brain/

 

https://www.forbes.com/sites/alicegwalton/2015/02/09/7-ways-meditation-can-actually-change-the-brain/#33f6ce451465

Meditation Helps Preserve the Aging Brain

Last week, a study from UCLA found that long-term meditators had better-preserved brains than non-meditators as they aged. Participants who’d been meditating for an average of 20 years had more grey matter volume throughout the brain — although older meditators still had some volume loss compared to younger meditators, it wasn’t as pronounced as the non-meditators. "We expected rather small and distinct effects located in some of the regions that had previously been associated with meditating," said study author Florian Kurth. "Instead, what we actually observed was a widespread effect of meditation that encompassed regions throughout the entire brain."

 

Meditation Reduces Activity in the Brain’s “Me Center"

One of the most interesting studies in the last few years, carried out at Yale University, found that mindfulness meditation decreases activity in the default mode network (DMN), the brain network responsible for mind-wandering and self-referential thoughts – a.k.a., “monkey mind.” The DMN is “on” or active when we’re not thinking about anything in particular, when our minds are just wandering from thought to thought. Since mind-wandering is typically associated with being less happy, ruminating, and worrying about the past and future, it’s the goal for many people to dial it down. Several studies have shown that meditation, though its quieting effect on the DMN, appears to do just this. And even when the mind does start to wander, because of the new connections that form, meditators are better at snapping back out of it.

 

Its Effects Rival Antidepressants for Depression, Anxiety

A review study last year at Johns Hopkins looked at the relationship between mindfulness meditation and its ability to reduce symptoms of depression, anxiety, and pain. Researcher Madhav Goyal and his team found that the effect size of meditation was moderate, at 0.3. If this sounds low, keep in mind that the effect size for antidepressants is also 0.3, which makes the effect of meditation sound pretty good. Meditation is, after all an active form of brain training. “A lot of people have this idea that meditation means sitting down and doing nothing,” says Goyal. “But that’s not true. Meditation is an active training of the mind to increase awareness, and different meditation programs approach this in different ways.” Meditation isn’t a magic bullet for depression, as no treatment is, but it’s one of the tools that may help manage symptoms.

 

Meditation May Lead to Volume Changes in Key Areas of the Brain

In 2011, Sara Lazar and her team at Harvard found that mindfulness meditation can actually change the structure of the brain: Eight weeks of Mindfulness-Based Stress Reduction (MBSR) was found to increase cortical thickness in the hippocampus, which governs learning and memory, and in certain areas of the brain that play roles in emotion regulation and self-referential processing. There were also decreases in brain cell volume in the amygdala, which is responsible for fear, anxiety, and stress – and these changes matched the participants’ self-reports of their stress levels, indicating that meditation not only changes the brain, but it changes our subjective perception and feelings as well. In fact, a follow-up study by Lazar’s team found that after meditation training, changes in brain areas linked to mood and arousal were also linked to improvements in how participants said they felt — i.e., their psychological well-being. So for anyone who says that activated blobs in the brain don’t necessarily mean anything, our subjective experience – improved mood and well-being – does indeed seem to be shifted through meditation as well.

 

Just a Few Days of Training Improves Concentration and Attention 

Having problems concentrating isn’t just a kid thing – it affects millions of grown-ups as well, with an ADD diagnosis or not. Interestingly but not surprisingly, one of the central benefits of meditation is that it improves attention and concentration: One recent study found that just a couple of weeks of meditation training helped people’s focus and memory during the verbal reasoning section of the GRE. In fact, the increase in score was equivalent to 16 percentile points, which is nothing to sneeze at. Since the strong focus of attention (on an object, idea, or activity) is one of the central aims of meditation, it’s not so surprising that meditation should help people’s cognitive skills on the job, too – but it’s nice to have science confirm it. And everyone can use a little extra assistance on standardized tests.

 

Meditation Reduces Anxiety — and Social Anxiety

A lot of people start meditating for its benefits in stress reduction, and there’s lots of good evidence to support this rationale. There’s a whole newer sub-genre of meditation, mentioned earlier, called Mindfulness-Based Stress Reduction (MBSR), developed by Jon Kabat-Zinn at the University of Massachusetts’ Center for Mindfulness (now available all over the country), that aims to reduce a person’s stress level, physically and mentally. Studies have shown its benefits in reducing anxiety, even years after the initial 8-week course. Research has also shown that mindfulness meditation, in contrast to attending to the breath only, can reduce anxiety – and that these changes seem to be mediated through the brain regions associated with those self-referential (“me-centered”) thoughts. Mindfulness meditation has also been shown to help people with social anxiety disorder: a Stanford University team found that MBSR brought about changes in brain regions involved in attention, as well as relief from symptoms of social anxiety.

 

Meditation Can Help with Addiction

A growing number of studies has shown that, given its effects on the self-control regions of the brain, meditation can be very effective in helping people recover from various types of addiction. One study, for example, pitted mindfulness training against the American Lung Association's freedom from smoking (FFS) program, and found that people who learned mindfulness were many times more likely to have quit smoking by the end of the training, and at 17 weeks follow-up, than those in the conventional treatment. This may be because meditation helps people “decouple” the state of craving from the act of smoking, so the one doesn’t always have to lead to the other, but rather you fully experience and ride out the “wave” of craving, until it passes. Other research has found that mindfulness training, mindfulness-based cognitive therapy (MBCT), and mindfulness-based relapse prevention (MBRP) can be helpful in treating other forms of addiction.

 

Short Meditation Breaks Can Help Kids in School

For developing brains, meditation has as much as or perhaps even more promise than it has for adults. There’s been increasing interest from educators and researchers in bringing meditation and yoga to school kids, who are dealing with the usual stressors inside school, and oftentimes additional stress and trauma outside school. Some schools have starting implementing meditation into their daily schedules, and with good effect: One district in San Francisco started a twice daily meditation program in some of its high-risk schools – and saw suspensions decrease, and GPAs and attendance increase. Studies have confirmed the cognitive and emotional benefits of meditation for schoolchildren, but more work will probably need to be done before it gains more widespread acceptance.

 

 

 

This Is Your Brain on Meditation

The science explaining why you should meditate every day


https://www.psychologytoday.com/blog/use-your-mind-change-your-brain/201305/is-your-brain-meditation

For those of you who are curious as to how meditation changes the brain, this is for you. Although this may be slightly technical, bear with me because it’s really interesting. The brain, and how we are able to mold it, is fascinating and nothing short of amazing. Here are the brain areas you need to know:

Lateral prefrontal cortex: the part of the brain that allows you to look at things from a more rational, logical and balanced perspective. In the book, we call it the Assessment Center. It is involved in modulating emotional responses (originating from the fear center or other parts of the brain), overriding automatic behaviors/habits and decreasing the brain’s tendency to take things personally (by modulating the Me Center of the brain, see below).

Medial prefrontal cortex: the part of the brain that constantly references back to you, your perspective and experiences. Many people call this the “Me Center” of the brain because it processes information related to you, including when you are daydreaming, thinking about the future, reflecting on yourself, engaging in social interactions, inferring other people’s state of mind or feeling empathy for others. We call it the Self-Referencing Center.

What’s interesting about the Medial PreFrontal Cortex (mPFC) is that it actually has two sections:

Ventromedial medial prefrontal cortex (vmPFC) – involved in processing information related to you and people that you view as similar to you. This is the part of the brain that can cause you to end up taking things too personally, which is why we referred to it as the unhelpful aspect of the Self-Referencing Center in the book. (In reality, this brain area has many important and helpful functions – since we were focusing on overcoming anxiety, depression and habits you want to change, we referred to it as unhelpful because it often causes increases in rumination/worry and exacerbates anxious or depressive thoughts/states/feelings.)

Dorsomedial Prefrontal Cortex (dmPFC) – involved in processing information related to people who you perceive as being dissimilar from you. This very important part of the brain is involved in feeling empathy (especially for people who we perceive of as not being like us) and maintaining social connections.

Insula: the part of the brain that monitors bodily sensations and is involved in experiencing “gut-level” feelings. Along with other brain areas, it helps “guide” how strongly you will respond to what you sense in your body (i.e., is this sensation something dangerous or benign?). It is also heavily involved in experiencing/feeling empathy.

Amygdala: the alarm system of the brain, what most refer to as the “Fear Center.” It's a part of the brain that is responsible for many of our initial emotional responses and reactions, including the “fight-or-flight” response. (Along with the Insula, this is what we referred to as the Uh Oh Center.)

The Brain Without Meditation – Stuck on Me

If you were to look at people’s brains before they began a meditation practice, you would likely see strong neural connections within the Me Center and between the Me Center and the bodily sensation/fear centers of the brain. This means that whenever you feel anxious, scared or have a sensation in your body (e.g., a tingling, pain, itching, whatever), you are far more likely to assume that there is a problem (related to you or your safety). This is precisely because the Me Center is processing the bulk of the information. What's more, this over-reliance on the Me Center explains how it is that we often get stuck in repeating loops of thought about our life, mistakes we made, how people feel about us, our bodies (e.g., “I’ve had this pain before, does this mean something serious is going on?) and so on.

Why is the Me Center allowed to process information this way, essentially unabated? The reason this happens, in part, is because the Assessment Center’s connection to the Me Center is relatively weak. If the Assessment Center was working at a higher capacity, it would modulate the excessive activity of the vmPFC (the part that takes things personally) and enhance the activity of the dmPFC (the part involved in understanding other’s thoughts and feelings). This would lead us to take in all the relevant information, discard erroneous data (that the Me Center might want to focus on exclusively) and view whatever is happening from a more balanced perspective – essentially decreasing the overthinking, ruminating and worrying that the Me Center is famous for promulgating. One helpful way to think of the Assessment Center is as a sort of “brake” for the unhelpful parts of the Me Center.

The Brain on Meditation – I Can See Clearly Now

In contrast, if you meditate on a regular basis, several positive things happen. First, the strong, tightly held connection between the Me Center (specifically the unhelpful vmPFC) and the bodily sensation/fear centers begins to break down. As this connection withers, you will no longer assume that a bodily sensation or momentary feeling of fear means something is wrong with you or that you are the problem! This explains, in part, why anxiety decreases the more you meditate – it’s because the neural paths that link those upsetting sensations to the Me Center are decreasing. Said another way, your ability to ignore sensations of anxiety is enhanced as you begin to break that connection between the unhelpful parts of the Me Center and the bodily sensation/fear centers. As a result, you are more readily able to see those sensations for what they are and not respond as strongly to them (thanks to your strengthened Assessment Center).

Second, a heftier, healthier connection forms between the Assessment Center and bodily sensation/fear centers. This means that when you experience a bodily sensation or something potentially dangerous or upsetting, you are able to look at it from a more rational perspective (rather than automatically reacting and assuming it has something to do with you). For example, when you experience pain, rather than becoming anxious and assuming it means something is wrong with you, you can watch the pain rise and fall without becoming ensnared in a story about what it might mean.

Finally, an added bonus of meditating is that the connection between the helpful aspects of the Me Center (i.e. dorsomedial prefrontal cortex) – the part involved in processing information related to people we perceive as being not like us – and the bodily sensation center – involved in empathy – becomes stronger. This healthy connection enhances your capacity to understand where another person is coming from, especially those who you cannot intuitively understand because you think or perceive things differently from them (i.e., dissimilar others). This increased connection explains why meditation enhances empathy – it helps us use the part of the brain that infers other people’s states of mind, their motivations, desires, dreams and so on, while simultaneously activating the part of the brain involved in the actual experience of empathy (insula). The end result is that we are more able to put ourselves in another person’s shoes (especially those not like us), thereby increasing our ability to feel empathy and compassion for everyone.

Daily Practice is Important

Essentially, the science “proves” what we know to be true from the actual experience of meditating. What the data demonstrate is that meditation facilitates strengthening the Assessment Center, weakening the unhelpful aspects of the Me Center (that can cause you to take things personally), strengthening the helpful parts of the Me Center (involved with empathy and understanding others) and changing the connections to/from the bodily sensation/fear centers such that you experience sensations in a less reactive, more balanced and holistic way. In a very real way, you literally are changing your brain for the better when you meditate.

In the end, this means that you are able to see yourself and everyone around you from a clearer perspective, while simultaneously being more present, compassionate and empathetic with people no matter the situation. With time and practice, people do truly become calmer, have a greater capacity for empathy and find they tend to respond in a more balanced way to things, people or events in their lives.

However, to maintain your gains, you have to keep meditating. Why? Because the brain can very easily revert back to its old ways if you are not vigilant (I’m referencing the idea of neuroplasticity here). This means you have to keep meditating to ensure that the new neural pathways you worked so hard to form stay strong.

To me, this amazing brain science and the very real rewards gained from meditation combine to form a compelling argument for developing and/or maintaining a daily practice. It definitely motivates me on those days I don’t “feel” like sitting. So, try to remind yourself that meditating every day, even if it’s only 15 minutes, will keep those newly formed connections strong and those unhelpful ones of the past at bay.

Addendum: For those wanting to start a meditation practice or who might be experiencing emotional issues, memories, etc. when meditating, please seek out an experienced meditation teacher. I have received some comments from people stating they do not believe meditation works (which is likely true for some people) or that it could be harmful if done incorrectly. Obviously, meditation has been very positive for me, but I have always worked with a meditation teacher or mentor and I would suggest you do the same, as a teacher can help you figure out what is right for you and guide you through any difficulties you may be having.

 

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