Monday, May 17, 2010

Neurological reason for doing mindfulness meditation

Neurological reason for doing mindfulness meditation





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.

Mindfulness is a technique in which one pays attention to his or her present emotions, thoughts and body sensations, such as breathing, without passing judgment or reacting. An individual simply releases his thoughts and lets it go."

One way to practice mindfulness meditation and pay attention to present-moment experiences is to label your emotions by saying, for example, "I'm feeling angry right now or "I'm feeling a lot of stress right now or "This is joy or whatever the emotion is," said Creswell, lead author of the study, which will be featured in an upcoming issue of Psychosomatic Medicine, a leading international medical journal for health psychology research.

"Thinking, "This is anger is what we do in this study, where people look at an angry face and say, "This is anger," Lieberman noted.

Creswell said Lieberman has now shown in a series of studies that simply labeling emotions turns down the amygdala alarm center response in the brain that triggers negative feelings.
Creswell, who conducted the mindfulness research as an advanced graduate student of psychology at UCLA, said mindfulness meditation is a potent and powerful therapy that has been helping people for thousands of years."

Previous studies have shown that mindfulness meditation is effective in reducing a variety of chronic pain conditions, skin disease, stress-related health conditions and a variety of other ailments, he said. Creswell and his UCLA colleagues Lieberman, Eisenberger and Way found that during the labeling of emotions, the right ventrolateral prefrontal cortex was activated, which seems to turn down activity in the amygdala. They then compared participants responses on the mindfulness questionnaire with the results of the labeling study.

"We found the more mindful you are, the more activation you have in the right ventrolateral prefrontal cortex and the less activation you have in the amygdala," Creswell said. "We also saw activation in widespread centers of the prefrontal cortex for people who are high in mindfulness. This suggests people who are more mindful bring all sorts of prefrontal resources to turn down the amygdala. These findings may help explain the beneficial health effects of mindfulness meditation, and suggest, for the first time, an underlying reason why mindfulness meditation programs improve mood and health.

"The right ventrolateral prefrontal cortex can turn down the emotional response you get when you feel angry," he said. "This moves us forward in beginning to understand the benefits of mindfulness meditation. For the first time, we're now applying scientific principles to try to understand how mindfulness works.

"This is such an exciting study because it brings together the Buddha's teachings more than 2,500 years ago, he talked about the benefits of labeling your experience with modern neuroscience," Creswell said. "Now, for the first time since those teachings, we have shown there is actually a neurological reason for doing mindfulness meditation. Our findings are consistent with what mindfulness meditation teachers have taught for thousands of years."

From http://www.news-medical.net/news/2007/06/23/26828.aspx

Thursday, May 13, 2010

Compassion: The New Wonder Drug | Miller-McCune Online


New research suggests compassion helps buffer women against the physical consequences of emotional stress.




Maybe the Dalai Lama is on to something. Compassion helps buffer women against the physical consequences of emotional stress, research suggests. (istockphoto.com)


Compassion for others is a pathway to health and happiness. While that basic tenet of Buddhismmay seem paradoxical to self-involved Westerners, newly published research suggests it has an actual physiological basis.
A study published in the Journal of Experimental Social Psychologyfound compassionate women are acutely receptive to emotional support offered by others, and this buffers the health-damaging effects of psychological stress.
A research team led by University of Maine psychologist Brandon Cosley conducted a study of 59 San Francisco residents, all white women in good health. Each filled out a survey in which they rated their level of agreement with a series of compassion-related statements, such as “it is important to take care of people.”
One week or more later, the women participated in a laboratory session in which they were asked to perform a stressful task: Giving a five-minute long extemporaneous speech to two evaluators. Before, during and after, monitors measured three physical indicators of their bodies’ stress response: their arterial blood pressure, cortisol level and high-frequency heart rate variability.
Half the women were assigned to the support condition: Evaluators nodded and smiled throughout their performance, and interrupted after 30 seconds to tell them they were doing well. The other half experienced the neutral condition, in which the evaluators provided no feedback except to re-state the instructions.
For those who were provided social support (i.e. the nods and smiles), “the higher their compassion (as measured on the earlier test), the lower their systolic and diastolic blood pressure, the lower their cortisol, and the higher their high-frequency heart rate variability during the speech task,” the researchers report.
In contrast, for those who did not receive social support, there was no relationship between compassion and reduced levels of physical stress reactions. The stress-buffering effect seems to occur only when a person both feels and receives compassion — a virtuous loop the body responds to in positive ways.
One obvious limitation of the study is it only looked at women. “Females may respond to stressors differently than men,” the researchers concede. In addition, they note that “giving support to others may be negatively associated with health over time if that support is not, or cannot, be reciprocated” — say, in the case of caring for an infirm relative.
“Nevertheless,” they conclude, “our data lend credence to the Dalai Lama’s belief that compassion for others may ultimately serve to benefit the self, particularly when compassion is reciprocated by others in stressful situations.” It points to a potentially powerful prescription for stress-related maladies: Feel genuine concern for the well-being of two people and call me in the morning.
(from http://www.miller-mccune.com/health/compassion-the-new-wonder-drug-15368/)

UC Davis News & Information :: Visual perception heightened by meditation training

UC Davis News & Information :: Visual perception heightened by meditation training



May 12, 2010
 Photo: Cliff Saron, left, gazes at Dalai Lama, with computer screens and flowers
 Psychology professor Cliff Saron talks with the Dalai Lama about his research during a visit to India in February 2009. (Mind and Life Institute/courtesy photo)

Intensive mental training has a measurable effect on visual perception, according to a new study from the Center for Mind and Brain at the University of California, Davis. People undergoing intensive training in meditation became better at making fine visual distinctions and sustaining attention during a 30-minute test.
A paper describing the results will be published in an upcoming issue of the journal Psychological Science and was posted on the journal website May 11. It is the first paper to be published from a major scientific study of meditation training, the Shamatha Project.
"These results show for the first time that improved perception, often claimed to be a benefit of meditation practice, underlies improvements in sustained attention," said project leader Clifford Saron, associate research scientist at the UC Davis Center for Mind and Brain.
Saron has been interested in meditation since the 1970s. In the 1990s, under the auspices of the Dalai Lama's private office and of the Boulder, Colo. -based Mind and Life Institute, he organized a field study of adept practitioners. During that project he was inspired by meeting exiled Tibetan monks and yogis in the Indian foothills of the Himalayas, who had achieved remarkable emotional calm, focus and joyfulness in their lives, sometimes despite great hardship and suffering.
Saron and his colleagues wanted to know: Can these states be achieved only by individuals with an unusually serene disposition? Or can they be achieved by most people through intensive training?
The Shamatha Project is an attempt to answer those questions. It is the first long-term, detailed, control-group study of the measurable effects of meditative training on physiology, mental functioning and emotional state, Saron said.
In the project, 30 participants attended a three-month meditation retreat at the Shambhala Mountain Center in Red Feather Lakes, Colo. They received ongoing instruction in meditation techniques from Buddhist scholar B. Alan Wallace of the Santa Barbara Institute for Consciousness Studies, while attending group sessions twice a day and engaging in individual practice for about six hours a day. Wallace had worked with Saron on the field study in India and brought the idea for the Shamatha project to Saron and his UC Davis colleagues in 2003.
At the beginning, end, and in the middle of the course, participants were tested on attention and cognition, psychological and emotional measures, and physical and physiological changes.
A control group of 30 people matched for age, sex, education, ethnicity and meditation experience was assessed at the same time and in the same place, but did not otherwise attend meditation training at that time. The control group did undergo identical training later.
The visual attention experiments were led by UC Davis graduate student Katherine MacLean. Based on tests long used to assess vigilance in radar operators and other professions requiring long durations of uninterrupted attention, participants had to watch lines appearing on a screen and click a mouse when they saw lines that were shorter than others.
By midway through the retreat, meditators had become better at making fine visual distinctions. They were able to identify a smaller difference between "long" and "short" lines, and were better able to sustain attention during the half-hour test. Those findings are consistent with Buddhist claims that meditation cultivates "attentional vividness."
People who continued practicing meditation after the retreat still showed improvements in perception when they were retested about five months later.
Meditation training may free up mental resources so that attentional focus can be sustained more easily for extended periods of time, Saron said. Meditators may also be more aware of normally subtle changes in experience that others miss, and have better emotional regulation.
The Shamatha Project shows that women and men of diverse age, ethnicity, education, and meditation experience can achieve measurable changes in their mental state and capabilities if they can commit to intensive training, Saron said.
While few individuals have three months to commit to such training, other studies have shown improvements in aspects of health and well-being with a less demanding regime. The minimum level of training required to produce the perceptual improvements seen in the Shamatha study remains to be determined, Saron said.
While the Shamatha Project is the largest and most comprehensive attempt yet to study changes brought about by mental training, its results cannot capture the full, first-person subjective experience of meditation, Saron said.
"We're not trying to bottle someone's experience," he said. The project may, however, give insights into the nature of the mind and the relation between psychological and physiological traits using data from both first- and third-person perspectives.
Papers describing the other results of the study are in press or submitted for publication. The other authors on the Psychological Science paper are graduate student Stephen Aichele, Associate Professor Emilio Ferrer, postdoctoral scholar Baljinder Sahdra, Professor Phillip Shaver, and Professor George R. Mangun from the UC Davis Departments of Psychology and Neurology; research specialists Anthony Zanesco and Brandon King, both now admitted graduate students at UC Davis; postdoctoral scholar Tonya Jacobs and consulting scientist Erika Rosenberg from the UC Davis Center for Mind and Brain; and graduate student David Bridwell, Department of Cognitive Science, UC Irvine. MacLean is now a postdoctoral fellow at the Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine.
Major support for The Shamatha Project comes from the Fetzer Institute and the Hershey Family Foundation. Additional support comes from numerous private foundations, individual donors, and a National Science Foundation predoctoral fellowship to MacLean, and a Social Sciences and Humanities Research Council of Canada postdoctoral fellowship to Sahdra.

Wednesday, May 12, 2010

DHA - Brain Boosting and Mercury Protecting | Health and Wellness News

DHA - Brain Boosting and Mercury Protecting | Health and Wellness News

Monday, August 04, 2008 - Byron J. Richards, CCN






Not only does your heart and circulatory system love DHA, so does your brain. Your brain cells would much rather make themselves of fatty acids from DHA, compared to potato chips or French fries – something to ponder. A variety of new animal studies illustrate the brain power of DHA.

One study showed that DHA was able to maintain “marked neurite-promoting potential in neurones from adult and aged animals.” The ability to generate nerve-related projections from existing old brain cells is truly amazing, and supports the notion of DHA as a superior brain anti-aging nutrient.

Another study showed that DHA helped maintain brain plasticity and cognitive function, protecting against scar tissue formation in the brain. The effects of DHA and exercise had a combined synergistic value in terms of further enhancing brain health. The researchers showed that brain brain-derived neurotrophic factor (BDNF) was boosted by DHA and the result was further enhanced by exercise. BDNF is the life force of brain rejuvenation, and here are two easy ways to boost BDNF levels.

Another DHA study tested if DHA could protect brain glial cells (astrocytes) and neurons from exposure to methylmercury. Exposure to mercury without protection by DHA caused these brain cells to have severe free radical distress and reduced mitochondrial activity (energy production). Pretreatment with DHA completely prevented these adverse effects of mercury on brain cells.

DHA is one potent nutrient for brain health.





Bookmark & Share

Tuesday, May 11, 2010

Understanding and Influencing Your Brainwaves


Everything we do in life has a brainwave signature, whether it’s reading, driving, talking or sleeping. And while such experiences can never be reduced to mere brainwave activity, science has helped us to understand that brainwaves do play a substantial role in the quality of our lives. Even more exciting, is the idea that we can consciously—to some degree, at least—decide which brain state and state of mind we want to be in. If this idea holds any degree of truth—and there is a significant body of scientific evidence that suggests it is—then an understanding of brainwaves would probably help us to move closer in realizing this truth for ourselves in our individual lives.
With that goal in mind, let’s take a simple but intriguing journey into what brainwaves are, how they impact our lives, and how we can work with them to improve the quality of our lives.
What are brainwaves?
Brainwaves are fluctuations of electrical energy in the brain. In fact, you might think of them as complex electrical rhythms, so that any particular brainwave pattern merely reflects the complex rhythmic frequency with which groups of neurons in your brain are firing on and off. As electrical impulses travel from neuron to neuron, the rate of travel, of course, has a certain rhythm to it. And when you combine the rhythms of various neuronal groups, they create what might be described as an intricate, modulating, poly-rhythmic dance of electromagnetic energy.
What are brainwave patterns?
Brainwave patterns are simply distinct groups of neuronal firing rhythms, ranging from the very fast to the very slow. And while a specific area of the brain may exhibit a more-or-less unified brainwave pattern for any period of time, such patterns tend to fluctuate, and the brain as a whole is constantly exhibiting a complex and ever-changing “soup” of rhythmic firing patterns. In understanding brainwaves, it is helpful to see the brain as a dynamically pulsing, rhythmic organism. If the brain is like a drummer, for example, then individual brainwave patterns are like the basic time signatures in which a drummer plays. If you can imagine many drummers playing at the same time, each playing to a different time signature, you will begin to sense the immense complexity of energy and information flowing through the brain at any given time. In the brain’s case, this fluctuating rhythmic activity refers not only to the on/off cadence of neuronal firing, but to the oscillating electromagnetic waves emanating from such activity as well.
For convenience, mainstream neuroscience distinguishes between five basic categories of brainwave patterns: gamma, beta, alpha, theta and delta.
Brainwave Pattern
Cycles Per Second
Correlated Processes and States of Consciousness
Gamma
40 Hz – 99 Hz
- Higher levels of brain organization - Possesses a binding action noticeably absent in schizophrenic patients - Above average integration of sensory information - Enhanced self awareness and insight - Clarity of mind - Suppressed totally by anesthetic - Believed to deeply influence waking consciousness and perception - Found in all parts of the brain - Most prominent in highly developed practitioners of Tibetan Buddhist compassion meditation - Euphoria
Beta
13 Hz - 39 Hz
- Sensorimotor awareness - Wide awake - Alert - Focused - Analyzes and assimilates new information rapidly - Complex mental processing - Peak physical and mental performance - Cannot be sustained indefinitely - Prolongation of beta can lead to exhaustion, anxiety, and tension - Short bursts of beta have been used for improving cognitive intelligence
Alpha
8 Hz - 12 Hz
- Accelerated learning - Beginning of drowsiness - Relaxed alertness - Zen meditation - Open focus (termed coined by Dr. Les Fehmi) - Can stimulate the release serotonin (vital in the regulation of mood and sleep)
Theta
4 Hz - 7.5 Hz
- Hypnogogic state - Dreaming sleep - Creativity inspiration - Vivid imagery - Deep meditation - Out-of-Body experiences - Long-term memory
Delta
.5 Hz - 3.5 Hz
- Deep dreamless sleep - Formless/expansive awareness - Very deep meditation - Healing and recuperation - Empathy


Through the use of modified electroencephalogram equipment, and in participation with highly trained meditators, Jeffrey Thompson, D.C., B.F.A. has categorized three additional brainwave patterns which are generally not recognized in mainstream neuroscience: lambda, hyper-gamma and epsilon.


Brainwave Pattern
Cycles Per Second
Correlated Processes and States of Consciousness
Lambda
200+ Hz
- Theorized to be the pattern involved in certain Tibetan monks able to walk barely clothed for days through the snow - Difficult to measure - Believed to be carried on the very slow moving Epsilon Waves
Hyper-Gamma
100 Hz - 199 Hz
- Very rare - Ecstatic states of consciousness - Exceptional integration of sensory information - Associated with overcoming barriers to personal development - Tremendous focus/self awareness - Deep feelings of love and joy
Epsilon (Sub-Delta)
¼ cycle per sec/1 frequency per 10 sec/1 frequency per minute - .4 Hz
- Very rare - Ecstatic states of consciousness - Deep spiritual insight - High level of inspiration - Theorized to be the state Yogi's go into when there is no discernable heart beat, respiration or pulse

Methods for Positively Influencing Your Brainwaves

Biofeedback - By monitoring specific biorhythms, the measurements of which are then fed back to the participant, conscious control over various physiological functions (including brainwaves) can be developed.
Neurofeedback - Described as a subset of biofeedback, neurofeedback uses far more sophisticated equipment to track complex brain rhythms in real time, which, when instantly fed back as audio-visual information to the participant, allow the possibility of developing subtle but powerful methods for influencing brain function. Neurofeedback training has been used successfully to treat alcoholism and attention-deficit disorders as well as enhance sports performance. It is, however, quite expensive.
Meditation - Scientific evidence suggests that meditation exercises significant influence over brainwave patterns, though different forms of meditation tend to be correlated with distinct brainwave patterns. For example, Zen meditation has been largely correlated with alpha waves (though theta waves have been found in highly adept Zen meditators), gamma waves have been correlated with Tibetan Buddhist Lovingkindness meditation, and theta waves have been found to be predominant in Sahaja meditation.
Anna Wise's Techniques - In her book, The High-Performance Mind, Wise reveals three simple methods she has found to significantly influence brainwaves: 1) Rolling the eyes upward (with eyelids closed) two or three times at the beginning of meditation has been found to immediately produce alpha waves, though only for a short time (which makes this technique useful for quickly moving into alpha); 2) Completely relaxing the tongue, which allows for a significant reduction of noisy beta waves; and 3) The use of vivid visualization which incorporates successive passageways, descending stairways and movements into deeper territory, all of which facilitate the emergence of theta waves.
Lester Fehmi's Open Focus Technique - Neurofeedback pioneer Les Fehmi has found that simply by imagining the space in and around your body, you can immediately produce alpha waves. You can find out more about this easy but effective technique through his book, The Open Focus Brain.
Clinical Hypnosis - Because of its impact on brainwaves and suggestibility, clinical hypnosis is being used more and more by medical professionals to significantly affect human behavior.
Brainwave Entrainment (BWE) - Because the brain is a rhythmic organism, brainwave entrainment utilizes rhythmic pulses of light and/or sound to rhythmically entrain brain rhythms to targeted patterns. To accomplish this, mind machines use both audio and visual pulses, while other programs use only audio pulses (for example, in the form of isochronic or monaural tones, or binaural beats). BWE has been used successfully to increase memory, GPA and overall intelligence, and, even better, it costs only a fraction of the cost of neurofeedback. It is also believed to improve cerebral blood flow.
Theanine - Found only in green tea, this amino acid has been found to induce alpha waves and significantly improve sleep. It is also available in capsule form, which can be found online or in most health food stores.
Slow, Deep Diaphragmatic Breathing - Place your hand on your stomach, and allow your breath to softly expand your belly, slowly and evenly. This can be practiced as a kind of simple meditation, but is best practiced throughout the day whenever you become aware of your breathing. By doing so, you're not only allowing more alpha waves to emerge, you're also using more of your lung capacity as well as feeding your brain and body with more life enhancing oxygen.
Mantra - Dr. Herbert Benson in his book, The Relaxation Response, reveals his research findings that virtually any word, when silently repeated in a slow, monotonous and metered manner, will induce a relaxation response, in which alpha waves increase.