May 22, 2006

David Lynch on meditation

Filed under: meditation, movies - alexei @ 1:56 am

Movie director legend David Lynch has been doing Transcendental Meditation for over 32 years. In a recent interview he discribes how the practice has changed his life:

Two weeks later my wife comes and says: What’s going on? I was quiet for a moment. Finally I asked: What do you mean? She said: This anger where did it go? Because I was taking it all out on her. It had just lifted. And that’s a very real thing. That is a very real thing. The anger was there and it just lifted away. The same way with depression and sorrow. And this fear, fear, fear… [fear of what?] The fear of the unknown that’s running through the world and manifests in all different ways. How is it all gonne fall? And you’re right in the middle of it and you don’t know and you blame other people for something that is really just you. The anxieties. They start lifting away. You become calm. It’s like going to the treasury every day. You go and just fill up those pockets, the energy for the day. It’s like money in the bank.

David Lynch on Meditation, BussinessPortal24.com
Official Transcendental Meditation Site

April 20, 2006

Gamma waves and meditation

Filed under: cogsci, meditation, brain, magnetism, consciousness - alexei @ 8:46 am

Depending on what we are thinking, how hard we are concentrating, our brain chemistry, environment, and a number of other factors, our brains have a certain electromagnetic signature, a wave frequency, which we can measure with available technology, namely electroencephalographs (EEG). Traditionally, these continuous rhythmic sinusoidal EEG waves were classified into four types: delta, theta, alpha and beta waves. Delta had a frequency range up to 4 Hz, associated with infants and children. Theta ranged from 4-8 Hz, and was linked with adolescence, trance and the preconscious state just before waking. Alpha (Berger’s) waves, 8-12 HZ, were tied to relaxed, alert consciousness. While, Beta waves, 12 Hz and above, were related to anxious thinking and active concentration. However, as increasing evidence for higher frequency brain activity came to light, Gamma waves lay claim the 26-80 Hz range, known euphemistically as “coherent 40 Hz oscillations.” These waves seem to go together with higher mental processes, perception and consciousness, making them the brain waves you probably want to have.

Gamma waves do not result from axonal-dendritic synapses, but rather from dentro-dendritic gap junctions that form after a synapse activation that links neurons together. Neurons connected by gap junctions have one common membrane, fire simultaneously and generally behave like a single giant neuron. These mega-neurons have membranes that depolarize coherently and can spread across different parts of the cortex (potentially allowing for brain-wide states). Normally, these networks are transient, as gap junctions form and dissolve constantly. But, recent research showing that practiced meditators like Tibetan monks can muscle 25-42 Hz easy, with some pushing 80-120 Hz, suggests that it is possible to keep the gap junctions open longer.

The relation between meditation and high wave frequency is not surprising, since the middle frequency (12-16 Hz), the sensorimotor rhythm, goes together with physical stillness. Just sitting still for a while is already half-way to Gamma. From there on, it almost seems it is just a matter of how much of your brain you have under control. Heightened consciousness, known as Samadhi in the meditation traditions, is an experience unclouded by cognitive contents. One usually arrives at it gradually, after years of practice, disciplining the mind that delights in distraction, learning how to focus all attention on a single thing. To focus completely on a single thing means to be able to let go of everything else. So, once you can do that, you can rid yourself from all undesired cognitive contents and enjoy a pure unmediated experience of reality. Now, if the Gamma wave frequency goes up as more of the brain is connected through gap junctions, it seems that advanced practitioners are simply able to network more of their brains, having trained to concentrate their minds. The benefits of meditation do not all wear off, advanced practitioners have a higher baseline gamma synchrony, suggesting a higher general awareness, concentration and consciousness. Other research has shown that meditation also thickens grey matter in parts of the cortex where it normally gets thinner with age. 

Breakthrough study on EEG of meditation, Stuart Hameroff MD, Director, Center for Consciousness Studies, U. of Arizona-Tucson

February 23, 2006

Tantra

Filed under: meditation, religion - alexei @ 6:27 pm

Tantra is an esoteric system of ritual and yoga in the Hindu, Taoist and Buddhist traditions. It is characterized by complex uses of chanted mantra, the visual meditations on symbolic diagrams or mandala, and the imporantce of female deities called Shakti. Tantric practices include cremation-ground practices such as meditation of corpses and the ritual use of wine, meat, and sexual intercourse. These practices use ritual and meditation to unify the devotee with the chosen deity. In Buddhism, rituals that appear to break basic moral precepts have for the most part been dropped, but the complex meditation practices have been retained.

Hindu Tantra

There are two different paths: dakshinachara and vamachara, translated as Right-Hand Path and Left-Hand Path respectively. Dakshinachara consists of traditional Hindu practices such as asceticism and meditation, while vamachara also includes ritual practices that go against the grain of mainstream Hinduism, including sexual rituals, consumption of alcohol and other intoxicants, animal sacrifice and flesh-eating. The two paths are viewed by as equally valid approaches to liberation. Vamachara, however, is considered to be the faster and more dangerous of the two, not suitable for all practitioners.

There are three classes of devotees: The animal devotee, one who is still mired in darkness (tamas), performs rituals with material symbols, following the teachings even when lacking understanding of their meaning. The heroic devotee, driven by activity (rajas), uses the five elements, called the five m’s: fish (matsya), meat (mamsa), wine (madya), aphrodisiac cereals (mudra), and sexual intercourse (maithuna) in his development. The divine devotee, in whom goodness (sattva) predominates, symbol and ritual are internalized, making it possible to awaken kundalini energy.
The universe is a manifestation of pure consciousness, divided into two interdependent poles. Shiva, the masculine element, is static, and is identified with unmanifested consciousness. It has the power to be but not to become or change. The other, Shakti, is the feminine aspect, which is dynamic and creative. She is the mother of the universe from whom all form is borm [Note that in Buddhist Tantra, or Vajrayana, in contrast to the Hindu, the female principle of ‘wisdom’ (prajna) is seen as static, whereas the male, or ‘means’ (upaya), is active].

The human body is a microcosm of the universe. In people, the feminine Shakti element is called Kundalini. The practice of Kundalini Yoga aims to awaken this feminine energy and make it ascend through the chakras (psychic centers) along the spine to the crown of the head, where it merges with the masculine Shiva element. Each of the chakras corresponds to one of the elements of which the world is composed. Muladhara represents solidity; Svadhisthana, liquidity; Manipura, the gaseous; Anahata, the aerial; Vishuddha, the etheric, or space. Hence, the ascent through the body is symbolic of one through the macrocosm of the universe. The Kundalini is usually pictured as a fiery serpent, while the chakras are represented as lotuses. The increasing number of lotus petals in ascending order may indicate the rising energy vibration frequencies of the chakras. When the serpent reaches a flower, the petals open and the lotus lifts, symbolizing the activation of its energies; when it leaves, the lotus closes and hangs down, it’s energies assimilated into the Kundalini. Once the snake reaches the last chakra, Kundalini merges with Shiva and the duality is dissolved in an ecstatic union. Afterwards, the serpent slowly descends back to the root chakra.

Taoist Alchemy

In Taoist tantra, the main aim is the search for immortality or at least a long life. Likely influenced by the Kundalini forms of Hindu tantra, Taoist tantric alchemy involves breath, muscle control and concentrates on retention of vitality. Most men can repopulate an entire continent with a single ejaculation, while most women are born with enough eggs to generate hundreds of lives. Consequently, when the hormones and nutrients of sexual activity are not used towards procreation, they should be harnessed to make our own life longer, healthier and more enjoyable.

The practice relies very little on external objects, focusing mainly on internal processes. The Taoist Canon recalls a group of Aryans who were shipwrecked on the South China shore thousands of years ago. They did not die, nor have children, and became known as the Shining Ones. They transmitted their secret magical and healing practices to the shamans. When Buddhism came to China, shamans were persecuted, like witches in the west, so they became Taoists, rivals to the Buddhists, and continued their practices in secret, using only internal energy, internal alchemy, without the use of accessories to identify themselves. The saying goes "you cannot tell a sage by his clothes."

A clear tantric parallel with Kundalini yoga can be seen in the Taoist Golden Light or Microcosmic Orbit Meditation. This technique uses a visualization of a ball of energy (sometimes a serpent), which represents jing, [’essence’, sometimes synonymous with semen but feminine (yin) in nature, the dense energy residing in the genitals] that slowly rises from the base of the spine to the back of the brain, where it is absorbed by the Nirvana Chamber in the brain’s center, mixing with shen, [the ’soul’, the male (yang) element, residing in the head], and then returns downward, replenishing the body’s vital energy. While there is some disagreement concerning the exact location of energy centers/chakras, the underlying concet is the same.

The third major type of energy is qi, or ‘breath’, seen by extension as ‘life force’ or ’spirit’ that is part of everything. It is harnessed through meditation and the practice of qigong, or ‘qi work’, which uses the coordination of various breathing patterns, physical postures and motions of the body to manage the breath and promote good health. While bearing some resemblance to hatha yoga, qigong is more dynamic, as it aims at a perpetual circulation of energy.

February 2, 2006

Meditation thickens gray matter

Filed under: meditation, brain - alexei @ 2:56 pm

Researchers at Harvard, Yale and MIT found that meditation can alter the physical structure of the brain. Scans showed that experienced meditators had increased thickeness in parts of the brain’s cortex (or ‘thinking cap’, part dealing with attention and processing sensory input), which normally get thinner with age. According to Sara Lazar, Harvard Medical School psychologist, "these increases are proportional to the time a person has been meditating during their lives… this suggests that the thickness differences are acquired through extensive practice and not simply due to differences between meditators and nonmeditators." The increase of gray matter thickeness was .004-.008 inches. "Data suggest that meditation practice can promote cortical plasticity in adults in areas important for cognitive and emotional processing and well-being," says Lazar.

Meditation found to increase brain size, Harvard Gazette

January 28, 2006

Short meditation guide

Filed under: meditation - alexei @ 3:36 am

Posture

Legs should be crossed. All the classic sitting meditation positions involve a stable three point base. So, you should sit in either the Lotus Position (padmasana), Half-Lotus or in the "Indian" or "tailor" fashion. In the Lotus, you sit with each foot placed on the opposite thigh, the way Sakyamuni Buddha is usually depicted. Unless you’re really limber or practice yoga, you’ll probably find this position difficult if you don’t sit on a cushion. Tibetan Buddhists use square cushions, Zen use round zofu, but a pillow or a folded blanket work as well. For the three point base to work, both of your knees must rest on the floor. Plant yourself firmly.

There are many hand positions for meditation, called mudra. But most place their hands either on the knees or in the cosmic mudra (The dominant hand is held palm up holding the other hand, also palm up, so that the knuckles of both hands overlap. The thumbs are lightly touching, thus the hands form an oval, which can rest on the upturned soles of your feet if you’re sitting in Full Lotus).

The back is kept straight, like an arrow or a stack of coins. Extend your neck as though reaching toward the ceiling with the top of you head. Your ears should be in a line parallel to your s in Soto (Gradual Enlightenment) Zen; while others meditate facing the world like Sakyamuni Buddha, as in the Rinzai (Sudden Enlightenment) School. Choose the way that works better for you.

The hara, which literally means ‘belly’, refers to the center of gravity, located in the abdomen three fingers below and two fingers behind the navel. Called the dantian in Chinese (’red field’) and the Svadhisthana Chakra in Kundalini Yoga. It is considered the seat of one’s spiritual energy. You should anchor your mind in the hara, thinking with your guts, not with your head. When you breathe, you should imagine the breath going down to the hara and returning from there.

Breathing

There are different pranyama, or breathing techniques for meditation. But one should begin by counting the breath, either on each inhalation, exhalation, or counting both. When you get to ten, start over at one. If you wish, you can count up to ten and then down to one. The counting is a feedback to help you know when your mind has drifted off. If you get distracted and lose count, don’t worry and just start over. After a while, you’ll notice your thoughts settling as you gain mastery over your mind. As your thoughts quiet down, counting becomes easier. When you feel your mind is sufficiently calm, you can stop counting and just focus on the in-out breath. Over time, you’ll notice your breathing slow down. While on average a person at sea-level breathes fifteen times a minute, one in deep meditation breathes at a rate of only two or three breaths a minute. Heart rate, circulation and metabolism also slow down, which is why masters are able to live on little or no sleep and one or less meal per day.

Concentration

By focusing on the breath, you bring your attention to what you’re doing in the present moment. Sati, or mindfulness, is the awareness of your thoughts and actions here and now. It applies equally to bodily actions and the mind’s thoughts and feelings. Right mindfulness, samma sati, is the seventh of the Buddha’s Eightfold Path and is a prerequisite for right concentration. You must develop an awareness of yourself before you can reach the awareness of everything else.

Buddhist meditation consists primarily of two aspects. Shamatha is the gradual development of mental and physical calmness (in Tibetan it is zhi gnas or ‘peaceful abiding’, in Chinese chih or ’stopping’). Vipashyana is the heightening of awareness, sensitivity and observation (a.k.a. lhag thong or ‘penetrating vision’, kuan or ’seeing’). Some meditations are calming, others aim for clarity, yet others do both. It is important that a balance is maintained and that one aspect is not enhanced at the expense of the other. Calmness without awareness is dozing; awareness without calm is ‘tripping’.

Samadhi is the Sanskrit word for concentration or one-pointedness. It is the ability to fully focus all your attention on the object at hand, keep it there for as long as necessary and shift it effortlessly at the appropriate time. Concentration is detachment. It is only by being able to let go of everything else, that we can fully concentrate on any one thing. Each time you return to the breath, you are training your ability to direct the mind where you want it to go. Fully developed, this is right concentration (samma samadhi), the eighth of the Eight Fold Path that leads to the realization of the noble truth: the way out of suffering is to eliminate attachment and desire.

Above all, perseverance. Don’t get discouraged by physical pain or psychological discomfort. They will pass as your mind-body get used to sitting. It is said that when Bodhidharma came to China, in order to attract students he sat in meditation in front of a cave for nine years. The first three years, people would come by and make fun of him. During the second three years, people grew tired of bothering a boring statue and they ignored him. In the final three years, a few realized his great accomplishment of sitting in meditation for so long despite the hardship and began to join him. By the end of the nine years, Bodhidharma spoke in front of thousands of totally receptive students, every one of them became instantly enlightened. His sermon was called the Lotus Sutra, the lotus symbolizing the anabasis through a world of ignorance and suffering, just as the flower rises above the muddy water from which it grows.

Congratulations! You are now enlightened. Just kidding. Now go meditate.

January 27, 2006

Dalai Lama speaks at neuroscience meeting despite controversy

Filed under: meditation, brain - alexei @ 1:42 am

Over much nay-saying, the Dalai Lama spoke at the Society for Neuroscience’s annual meeting. Protesters claimed that the Tibetan leader, 14th reincarnation of Avalokitesvara Bodhisattva of Infinite Compassion, is not qualified to speak about the brain. Further, that his presence confuses the distinction between science and faith. The aim of meditation (central to Buddhism) is to tame and control the brain, a skill honed and perfected by Tibetan Buddhism so much so that it is called the Diamond Vehicle (Vajrayana), the quickest road to enlightenment. Meanwhile, the Dalai Lama is open to the scientific method and has stated his willingness to abandon Buddhist doctrines shown by science to be false (some beliefs like reincarnation are untestable, therefore remain insulated). There was an online petition to protest the talk, it was quickly hacked by supporters of the Lama.

Buddha on the Brain, Wired.com

March 19, 2005

Effects of meditation and prayer on the brain

Filed under: psych, meditation, brain - alexei @ 2:44 am

"I think we are poised at a wonderful time in our history to be able to explore religion and spirituality in a way which was never thought possible," told Andrew Newberg, a radiologist at UPenn, to BBC’s Discovery program. Using brain imaging, Newberg and friends studied a group of Tibetan Buddhist monks as they meditated for about an hour. When the monks attained concentration they were asked to pull a string that released an injection of radioactive tracer into their blood. The small amount of radioactive marker would be used to see how the die moved to active parts of the brain (this process was repeated in a normal waking state).

"There was an increase in activity in the front part of the brain, the area that is activated when anyone focuses attention on a particular task," Dr Newberg explained. Furthermore, a decrease in activity in the back part of the brain - the parietal lobe - responsible for orientation, reinforced the general suggestion that meditation leads to a lack of spatial awareness. "During meditation, people have a loss of the sense of self and frequently experience a sense of no space and time and that was exactly what we saw."

In an earlier study, Dr Newberg looked at the brain activity of Franciscan nuns during "centering" prayer. Though because of the verbal element additional parts of the brain were used, prayer also "activated the attention area of the brain, and diminished activity in the orientation area," supporting the theory that meditation and prayer have similar effects on the mind. "When someone has a mystical experience, they perceive that sense of reality to be far greater and far clearer than our usual everyday sense of reality. Since the sense of spiritual reality is more powerful and clear, perhaps that sense of reality is more accurate than our scientific everyday sense of reality."

Meditation mapped in monks, BBCNews.com. Listen
Related:
Meditation gives brain a charge
, WashingtonPost.com
Meditation changes temperatures, Harvard Gazette

Get free blog up and running in minutes with Blogsome
Theme designed by Alex King