In the recent years there has been a growing interest within the medical community to study the physiological effects of meditation (Venkatesh et al., 1997; Peng et al., 1999; Lazar et al., 2000; Carlson et.al, 2001). Many concepts of meditation have been applied to clinical settings in order to measure its effect on somatic motor function as well as cardiovascular and respiratory function. Also the hermeneutic and phenomenological aspects of meditation are areas of growing interest. Meditation has entered the mainstream of health care as a method of stress and pain reduction. For example, in an early study in 1972, transcendental meditation was shown to affect the human metabolism by lowering the biochemical byproducts of stress, such as lactate, decreasing heart rate and blood pressure and inducing favorable brain waves.

As a method of stress reduction, meditation is often used in hospitals in cases of chronic or terminal illness to reduce complications associated with increased stress including a depressed immune system. There is a growing consensus in the medical community that mental factors such as stress significantly contribute to a lack of physical health, and there is a growing movement in mainstream science to fund research in this area (e.g. the establishment by the NIH in the U.S. of 5 research centers to research the mind-body aspects of disease.) Dr. James Austin, a neurophysiologist at the University of Colorado , reported that Zen meditation rewires the circuitry of the brain in his landmark book Zen and the Brain ( Austin , 1999). This has been confirmed using sophisticated imaging techniques which examine the electrical activity of the brain.

Dr. Herbert Benson of the Mind-Body Medical Institute, which is affiliated with Harvard and several Boston hospitals, reports that meditation induces a host of biochemical and physical changes in the body collectively referred to as the "relaxation response" (Lazar et.al, 2003). The relaxation response includes changes in metabolism, heart rate, respiration, blood pressure and brain chemistry. Benson and his team have also done clinical studies at Buddhist monasteries in the Himalayan Mountains .

Among other well-known studies within this particular field of interest we find the research of Jon Kabat-Zinn and his colleagues at the University of Massachusetts who have done extensive research on the effects of mindfulness meditation on stress (Kabat-Zinn et.al, 1985; Davidson et.al, 2003).

Meditation and the brain

Mindfulness meditation and related techniques are intended to train attention for the sake of provoking insight. Think of it as the opposite of attention deficit disorder. A wider, more flexible attention span makes it easier to be aware of a situation, easier to be objective in emotionally or morally difficult situations, and easier to achieve a state of responsive, creative awareness or "flow".

One theory, presented by Daniel Goleman & Tara Bennett-Goleman (2001), suggests that meditation works because of the relationship between the amygdala and the prefrontal cortex. In very simple terms, the amygdala is the part of the brain that decides if we should get angry or anxious (among other things), and the pre-frontal cortex is the part that makes us stop and think about things (it is also known as the inhibitory centre).

So, the prefrontal cortex is very good at analyzing and planning, but it takes a long time to make decisions. The amygdala, on the other hand, is simpler (and older in evolutionary terms). It makes rapid judgements about a situation and has a powerful effect on our emotions and behaviour, linked to survival needs. For example, if a human sees a lion leaping out at them, the amygdala will trigger a fight or flight response long before the prefrontal cortex knows what's happening.

But in making snap judgments, our amygdalas are prone to error, seeing danger where there is none. This is particularly true in contemporary society where social conflicts are far more common than encounters with predators, and a basically harmless but emotionally charged situation can trigger uncontrollable fear or anger — leading to conflict, anxiety, and stress.

Because there is roughly a quarter of a second gap between the time an event occurs, and the time it takes the amygdala to react, a skilled meditator may be able to intervene before a fight or flight response takes over, and perhaps even redirect it into more constructive or positive feelings.

The different roles of the amygdala and prefrontal cortex can be easily observed under the influence of various drugs. Alcohol depresses the brain generally, but the sophisticated prefrontal cortex is more affected than less complex areas, resulting in lowered inhibitions, decreased attention span, and increased influence of emotions over behaviour. Likewise, the controversial drug ritalin has the opposite effect, because it stimulates activity in the prefrontal cortex.

Some studies of meditation have linked the practice to increased activity in the left prefrontal cortex, which is associated with concentration, planning, meta-cognition (thinking about thinking), and with positive affect (good feelings). There are similar studies linking depression and anxiety with decreased activity in the same region, and/or with dominant activity in the right prefrontal cortex. Meditation increases activity in the left prefrontal cortex, and the changes are stable over time — even if you stop meditating for a while, the effect lingers.

Meditation and EEG's

Electroencephalographs (EEG) recordings of skilled meditators showed gamma wave activity that gradually expanded across the brain during meditation. Gamma waves indicate synchrony between sections of the brain. These meditators had 10 to 40 years of training in Buddhist-based mental training. EEGs done on meditators who had received recent training turned up considerably less synchrony.

The experienced meditators also showed increased gamma activity while at rest and not meditating. The results of the study do not make clear whether meditation training creates this activity or if individuals with high gamma activity are attracted to meditation. (Lutz & Davidson, 2004).

Meditation also effects brain wave production as measured by an EEG machine. While the brain at a waking state is primarily in the Beta range of frequencies (14 - 21 cycles per second), while under meditation the brain tends to slow down the Alpha range (7 - 14 cycles per second). One of the first Americans to study the effects of meditation on brainwave production was Jose Silva who founded the Silva Method and Silva UltraMind System. Silva theorized that meditation, in addition to stress relief could also be used for enhancing creativity and developing intuition.

Adverse effects

Predominantly, studies of meditation report positive effects. However, some studies report that meditation may have adverse effects in certain circumstances (Lukoff, Lu & Turner, 1998; Perez-De-Albeniz & Holmes, 2000). If practiced improperly or too intensely, meditation can lead to considerable psychological and physiological problems, such as the symptoms of Kundalini syndrome, Shamanic illness, Tumo or Qi-gong-related problems . Serious, and credible teachers of meditation usually warn their students about the possible pitfalls of a contemplative path. Another issue concerns the adaptation of eastern meditative concepts to a western culture, an adaptation that is often unfamiliar with the cultural matrix that the meditative concept originated from. Eastern concepts of meditation are often imported to a western setting within the popular context of new religious movements, or within the context of popular approaches to body and health. It is common for this popular context to be unfamiliar with the broad range of adverse affects that might occur during meditation, and to have limited tools for dealing with them when they do arise.

Stories of unguided practitioners or inexpertly guided students developing chronic mental and physical health problems as a result of their attempts at meditation training are not uncommon. English speaking practitioners, and teachers of Chinese Qi-Gong , notes that the practice of this contemplative exercise is sometimes accompanied by physical and psychological distress. The identification of this syndrome has led to the inclusion of a culture-sensitive category in the DSM-IV called Qi-Gong Psychotic Reaction (American Psychiatric Association, 1994: Appendix 1). Traditionally, Qi-Gong, at least, is considered more of a concentration focus and health maintenance regimen in aid of meditation rather than a panacea for any problem or set of problems.

Since the practice of meditation might include a powerful confrontation with existential questions, it is not considered wise to engage in intense meditation techniques without an extended period of psychological preparation, preferably in contact with a credible teacher or clinician. In the case of Asian contemplative traditions there often exist major challenges connected to the way the particular tradition is to be applied to a Western culture, or a Western mindset. A growing body of clinical literature is now starting to address the phenomenon of meditation-related problems (Lukoff, Lu & Turner, 1998; Perez-De-Albeniz & Holmes, 2000). Several side-effects have been reported, including uncomfortable kinaesthetic sensations, mild dissociation and psychosis-like symptoms (Craven, 1989). From a clinical study of twenty-seven long term meditators, Shapiro (1992) reported such adverse effects as depression, relaxation-induced anxiety and panic, paradoxical increases in tension, impaired reality testing, confusion, disorientation and feeling 'spaced out'. The possibility that meditation might trigger strong emotional reactions is also reported by Kutz, Borysenko & Benson (1985). Within the context of therapy, meditation is usually contraindicated when the therapeutic goal is to strengthen ego boundaries, release powerful emotions, or work through complex relational dynamics (Bogart, 1991).

The tendency of meditation to disturb object-relations and release unconscious material implies that the beginning meditator should approach the practice with moderation. It usually takes years of dedication to become stable in a contemplative practice, a perspective that is often overlooked by many new religious movements and New Age therapies. Another problematic feature of the modern New Age approach is its association with frauds and deliberate charlatans who promote themselves as "healers", promising miracle cures of any conceivable affliction for the right amount of money.

Also, meditative traditions which include the use of drugs are generally considered to be harmful to the practitioner. Additionally, as with any practice, meditation may also be used to avoid facing ongoing problems or emerging crises in the meditator's life. In such situations, it may be helpful to apply mindful attitudes acquired in meditation while actively engaging with current problems (see Hayes et al, 1999, chap. 3; Metzner, 2005).

Meditation and drugs

Some modern methods of meditation do not include the use of drugs due to the known health problems associated with drug use. However, the use of stimulants has been proposed by some as a means to provide insight, and in some shamanistic traditions they are used as agents of ritual. Some Native American traditions for instance emphasized the smoking of a pipe containing tobacco or other plants. Some Hindu traditions use bhang, East Asian traditions use tea and Middle Eastern (and many Western) religious use coffee as an aid to meditation.

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B.K.S. Iyengar

A photograph of B.K.S. Iyengar

B.K.S. Iyengar , (aka Yogacharya B.K.S. Iyengar) born Bellur Krishnamachar Sundararaja Iyengar, December 14, 1918, in India, is founder of Iyengar Yoga and one of the most respected yoga teachers in the world. Millions of students and followers around the world practice Iyengar Yoga. Iyengar and has written a number of definitive yoga texts. Iyengar Yoga

Yoga Sutras of Patanjali

The Yoga Sutras of Patanjali are one of the six darshanas of Hindu or Vedic schools and, alongside the Bhagavad Gita and Hatha Yoga Pradipika, are a milestone in the history of Yoga. The book is a set of aphorisms, which are short, terse phrases designed to be easy to memorize. Though brief, the Yoga Sutras are an enormously influential work that is just as relevant for yoga philosophy and practice today as it was when it was written. Yoga Sutras of Patanjali

Hatha Yoga Pradipika

The most fundamental text of Hatha Yoga is the Hatha Yoga Pradipika , a Sanskrit classic written by Swami Swatamarama, a disciple of Swami Goraknath. It is said to be the oldest surviving text on the Hatha Yoga. Hatha Yoga and Hatha Yoga Pradipika

Kundalini

Kundalini is derived from a Sanskrit word meaning either "coiled up" or "coiling like a snake". There are a number of other translations of the term usually emphasizing a more serpent nature to the word— e.g. 'serpent power'. The caduceus symbol of coiling snakes is thought to be an ancient symbolic representation of Kundalini physiology.

Zen

Bodhidharma, woodblock print by Yoshitoshi, 1887.

Zen is the Japanese name of a well known branch of Mahayana Buddhist schools, practiced originally in China as Ch'an and subsequently in Korea , Japan , and Vietnam . Zen emphasizes the role of sitting meditation (zazen) in pursuing enlightenment. Zen can be considered a religion, a philosophy, or simply a practice depending on one's perspective. It has also been described as a way of life, work, and an art form.

Zen is the common name for this branch of Buddhism in Japanese as well as in English. However, in the last half of the 20th century, Zen has become an international phenomenon, with centers in many countries around the world. Zen

Kundalini Yoga - Awakening the Kundalini Energy

Kundalini Yoga

Kundalini Yoga is the most powerful Yoga ever known and is considered as the mother of all the Styles of Yoga. It centers on awakening the Kundalini, the energy (serpent power or Bhujangini) which is found at the base of our spine or the Muladhara Chakra. Kundalini came from the word kunda which means "pot" but it Kundalini Sadhna, it is defined as the coiled energy that looks like a serpent with three and a half coils lying dormant at the base of the spine with the tip of its tail to its mouth. The three coils represent the Three Gunas : the Sattva, Rajas and Tamas, the half coil

Kundalini Yoga

Sri Tirumalai Krishnamacharya

Sri Tirumalai Krishnamacharya (1888-1989) is credited with being instrumental in the resurgence of interest in hatha yoga. His students included Indra Devi, B.K.S. Iyengar, Sri K. Pattabhi Jois, and T.K.V. Desikachar—major yoga teachers in their own right. Born in 1888 in Mysore , India , Krishnamacharya received his first instruction in Sanskrit and yoga from his father. He went on to attend the Royal College of Mysore and later spent seven years studying in Tibet . He returned to Mysore in 1924 and later opened a yoga school. In 1976, Krishnamacharya's son and closest disciple, T.K.V. Desikachar, founded the Krishnamacharya Yoga Mandiram, a yoga center in Madras .

Sri K. Pattabhi Jois

Sri Krishna Pattabhi Jois was born on Guru Purnima in 1915 in the village of Kowshika , near Hassan, Karnataka, South India . Jois currently teaches yoga at his school, the Ashtanga Yoga Research Institute, in Mysore , India .

In 1927, at the age of 12, Jois attended a lecture and demonstration in Hassan by S. T. Krishnamacharya and the very next day became his student —the beginning of 25 years of study with Krishnamacharya

Karate

Two Karate practitioners engaging in competition style Karate.

Karate or karate-do , "the way of the empty hand") is a martial art of Okinawan origin. Karate is a synthesis of indigenous Okinawan fighting methods and Southern Chinese martial arts. In modernity, it is categorized by some as budo, introduced to the Japanese main islands from Okinawa in 1921 by various Okinawan practitioners who moved to mainland Japan during the early 20th century

Meditation

Meditation refers to any of a wide variety of spiritual practices (and their close secular analogues) which emphasize mental activity or quiescence.

The English word comes from the Latin meditation , which originally indicated every type of physical or intellectual exercise, but which later could perhaps be better translated as "contemplation." This usage is found in Christian spirituality, for example, when one "meditates" on the sufferings of Christ; as well as Western philosophy, as in Descartes' Meditations on First Philosophy , a set of six mental exercises which systematically analyze the nature of reality.

Meditation

Chakra

In Hinduism and its spiritual systems of yoga and in some related eastern cultures, as well as in some segments of the New Age movement -- and to some degree the distinctly different New Thought movement -- a chakra is thought to be an energy node in the human body.

The word comes from the Sanskrit cakra meaning "wheel, circle", and sometimes also referring to the "wheel of life". The pronunciation of this word can be approximated in English by chuh kruh ; with ch as in chart and both instances of a as in yoga (the commonly found pronunciation shock rah is incorrect).

Self-realization

In yoga, self-realization is knowledge of one's true self. This true self is also referred to as the atma to avoid ambiguity. The term "self-realization" is a translation of the Sanskrit expression atma jnana (knowledge of the self or atma). The reason the term "realization" is used instead of "knowledge" is that jnana refers to knowledge based on experience, not mere intellectual knowledge.

As discussed in the article on yoga, while the goal of self-realization is the same in all yoga paths, the means used to achieve that goal differ. For example, in Sahajayoga or hatha yoga, self-realization is said to be achieved when the serpent force or kundalini rises through the shushumna nadi to the sahasrara chakra.

Asana

Asana is a Sanskrit word that literally means a seat but in the practice of yoga refers to a pose or posture. In Patanjali's yoga sutras Asana means, mainly, sitting for meditation.

The practice of asana involves stretching and moving the body into various positions. With practice, the body can be made to remain in a given position for a longer period of time, comfortably. When a degree of comfort is attained in a given posture, it becomes Asana . In general, however, the term is also used to refer to physical yoga exercises in general. Asana

Soul

The soul , according to many religious and philosophical traditions, is the ethereal substance — spirit — particular to a unique living being. Such traditions often consider the soul both immortal and innately aware of its immortal nature, as well as the true basis for sentience in each living being.

The concept of the soul has strong links with notions of an afterlife, but opinions may vary wildly, even within a given religion, as to what happens to the soul after death. Many within these religions and philosophies see the soul as immaterial, while others consider it possibly material. Soul

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