Brain Waves and Meditation

Mar. 31, 2010 — Forget about crystals and candles, and about sitting and breathing in awkward ways. Meditation research explores how the brain works when we refrain from concentration, rumination and intentional thinking. Electrical brain waves suggest that mental activity during meditation is wakeful and relaxed.

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"Given the popularity and effectiveness of meditation as a means of alleviating stress and maintaining good health, there is a pressing need for a rigorous investigation of how it affects brain function," says Professor Jim Lagopoulos of Sydney University, Australia. Lagopoulos is the principal investigator of a joint study between his university and researchers from the Norwegian University of Science and Technology (NTNU) on changes in electrical brain activity during nondirective meditation.

Constant brain waves

Whether we are mentally active, resting or asleep, the brain always has some level of electrical activity. The study monitored the frequency and location of electrical brain waves through the use of EEG (electroencephalography). EEG electrodes were placed in standard locations of the scalp using a custom-made hat

Participants were experienced practitioners of Acem Meditation, a nondirective method developed in Norway. They were asked to rest, eyes closed, for 20 minutes, and to meditate for another 20 minutes, in random order. The abundance and location of slow to fast electrical brain waves (delta, theta, alpha, beta) provide a good indication of brain activity.

Relaxed attention with theta

During meditation, theta waves were most abundant in the frontal and middle parts of the brain.

"These types of waves likely originate from a relaxed attention that monitors our inner experiences. Here lies a significant difference between meditation and relaxing without any specific technique," emphasizes Lagopoulos.

"Previous studies have shown that theta waves indicate deep relaxation and occur more frequently in highly experienced meditation practitioners. The source is probably frontal parts of the brain, which are associated with monitoring of other mental processes."

"When we measure mental calm, these regions signal to lower parts of the brain, inducing the physical relaxation response that occurs during meditation."

Silent experiences with alpha

Alpha waves were more abundant in the posterior parts of the brain during meditation than during simple relaxation. They are characteristic of wakeful rest.

"This wave type has been used as a universal sign of relaxation during meditation and other types of rest," comments Professor Øyvind Ellingsen from NTNU. "The amount of alpha waves increases when the brain relaxes from intentional, goal-oriented tasks.This is a sign of deep relaxation, -- but it does not mean that the mind is void."

Neuroimaging studies by Malia F. Mason and co-workers at Dartmouth College NH suggest that the normal resting state of the brain is a silent current of thoughts, images and memories that is not induced by sensory input or intentional reasoning, but emerges spontaneously "from within."

"Spontaneous wandering of the mind is something you become more aware of and familiar with when you meditate," continues Ellingsen, who is an experienced practitioner. "This default activity of the brain is often underestimated. It probably represents a kind of mental processing that connects various experiences and emotional residues, puts them into perspective and lays them to rest."

Different from sleep

Delta waves are characteristic of sleep. There was little delta during the relaxing and meditative tasks, confirming that nondirective meditation is different from sleep.

Beta waves occur when the brain is working on goal-oriented tasks, such as planning a date or reflecting actively over a particular issue. EEG showed few beta waves during meditation and resting.

"These findings indicate that you step away from problem solving both when relaxing and during meditation," says Ellingsen.

Nondirective versus concentration

Several studies indicate better relaxation and stress management by meditation techniques where you refrain from trying to control the content of the mind.

"These methods are often described as nondirective, because practitioners do not actively pursue a particular experience or state of mind. They cultivate the ability to tolerate the spontaneous wandering of the mind without getting too much involved. Instead of concentrating on getting away from stressful thought and emotions, you simple let them pass in an effortless way."

Take home message

Nondirective meditation yields more marked changes in electrical brain wave activity associated with wakeful, relaxed attention, than just resting without any specific mental technique.

Source: http://www.sciencedaily.com/releases/2010/03/100319210631.htm

Making relaxation techniques a part of your life

The best way to start and maintain a relaxation practice is to incorporate it into your daily routine. Between work, family, school, and other commitments, though, it can be tough for many people to find the time. Fortunately, many of the techniques can be practiced while you’re doing other things.

Rhythmic exercise as a mindfulness relaxation technique

Rhythmic exercise—such as running, walking, rowing, or cycling—is most effective at relieving stress when performed with relaxation in mind. As with meditation, mindfulness requires being fully engaged in the present moment, focusing your mind on how your body feels right now. As you exercise, focus on the physicality of your body’s movement and how your breathing complements that movement. If your mind wanders to other thoughts, gently return to focusing on your breathing and movement.

If walking or running, for example, focus on each step—the sensation of your feet touching the ground, the rhythm of your breath while moving, and the feeling of the wind against your face.

Tips for fitting relaxation techniques into your life

• If possible, schedule a set time to practice each day. Set aside one or two periods each day. You may find that it’s easier to stick with your practice if you do it first thing in the morning, before other tasks and responsibilities get in the way.
• Practice relaxation techniques while you’re doing other things. Meditate while commuting to work on a bus or train, or waiting for a dentist appointment. Try deep breathing while you’re doing housework or mowing the lawn. Mindfulness walking can be done while exercising your dog, walking to your car, or climbing the stairs at work instead of using the elevator. Once you’ve learned techniques such as tai chi, you can practice them in your office or in the park at lunchtime.
• If you exercise, improve the relaxation benefits by adopting mindfulness. Instead of zoning out or staring at a TV as you exercise, try focusing your attention on your body. If you’re resistance training, for example, focus on coordinating your breathing with your movements and pay attention to how your body feels as you raise and lower the weights.
• Avoid practicing when you’re sleepy. These techniques can relax you so much that they can make you very sleepy, especially if it’s close to bedtime. You will get the most benefit if you practice when you’re fully awake and alert. Do not practice after eating a heavy meal or while using drugs, tobacco, or alcohol.
• Expect ups and downs. Don’t be discouraged if you skip a few days or even a few weeks. It happens. Just get started again and slowly build up to your old momentum.

Link: http://www.helpguide.org/mental/stress_relief_meditation_yoga_relaxation.htm

Relaxation technique 6: Yoga and tai chi for stress relief

Yoga involves a series of both moving and stationary poses, combined with deep breathing. As well as reducing anxiety and stress, yoga can also improve flexibility, strength, balance, and stamina. Practiced regularly, it can also strengthen the relaxation response in your daily life. Since injuries can happen when yoga is practiced incorrectly, it’s best to learn by attending group classes, hiring a private teacher, or at least following video instructions.

What type of yoga is best for stress?

Although almost all yoga classes end in a relaxation pose, classes that emphasize slow, steady movement, deep breathing, and gentle stretching are best for stress relief.

• Satyananda is a traditional form of yoga. It features gentle poses, deep relaxation, and meditation, making it suitable for beginners as well as anyone primarily looking for stress reduction.
• Hatha yoga is also reasonably gentle way to relieve stress and is suitable for beginners. Alternately, look for labels like gentle, for stress relief, or for beginners when selecting a yoga class.
• Power yoga, with its intense poses and focus on fitness, is better suited to those looking for stimulation as well as relaxation.

If you’re unsure whether a specific yoga class is appropriate for stress relief, call the studio or ask the teacher.

Tai chi

If you’ve ever seen a group of people in the park slowly moving in synch, you’ve probably witnessed tai chi. Tai chi is a self-paced, non-competitive series of slow, flowing body movements. These movements emphasize concentration, relaxation, and the conscious circulation of vital energy throughout the body. Though tai chi has its roots in martial arts, today it is primarily practiced as a way of calming the mind, conditioning the body, and reducing stress. As in meditation, tai chi practitioners focus on their breathing and keeping their attention in the present moment.

Tai chi is a safe, low-impact option for people of all ages and levels of fitness, including older adults and those recovering from injuries. Like yoga, once you’ve learned the basics of tai chi or qi gong, you can practice alone or with others, tailoring your sessions as you see fit. 

Link: http://www.helpguide.org/mental/stress_relief_meditation_yoga_relaxation.htm

Relaxation technique 4: Mindfulness for stress relief

Mindfulness is the ability to remain aware of how you’re feeling right now, your “moment-to-moment” experience—both internal and external. Thinking about the past—blaming and judging yourself—or worrying about the future can often lead to a degree of stress that is overwhelming. But by staying calm and focused in the present moment, you can bring your nervous system back into balance. Mindfulness can be applied to activities such as walking, exercising, eating, or meditation.

Meditations that cultivate mindfulness have long been used to reduce overwhelming stress. Some of these meditations bring you into the present by focusing your attention on a single repetitive action, such as your breathing, a few repeated words, or flickering light from a candle. Other forms of mindfulness meditation encourage you to follow and then release internal thoughts or sensations.

Practicing mindfulness meditation

Key points in mindfulness mediation are:

• A quiet environment. Choose a secluded place in your home, office, garden, place of worship, or in the great outdoors where you can relax without distractions or interruptions.
• A comfortable position. Get comfortable, but avoid lying down as this may lead to you falling asleep. Sit up with your spine straight, either in a chair or on the floor. You can also try a cross-legged or lotus position.
• A point of focus. This point can be internal – a feeling or imaginary scene – or something external - a flame or meaningful word or phrase that you repeat it throughout your session. You may meditate with eyes open or closed. Also choose to focus on an object in your surroundings to enhance your concentration, or alternately, you can close your eyes.
• An observant, noncritical attitude. Don’t worry about distracting thoughts that go through your mind or about how well you’re doing. If thoughts intrude during your relaxation session, don’t fight them. Instead, gently turn your attention back to your point of focus. 

Link : http://www.helpguide.org/mental/stress_relief_meditation_yoga_relaxation.htm

Relaxation technique 2: Progressive muscle relaxation for stress relief

Progressive muscle relaxation involves a two-step process in which you systematically tense and relax different muscle groups in the body.

With regular practice, progressive muscle relaxation gives you an intimate familiarity with what tension—as well as complete relaxation—feels like in different parts of the body. This awareness helps you spot and counteract the first signs of the muscular tension that accompanies stress. And as your body relaxes, so will your mind. You can combine deep breathing with progressive muscle relaxation for an additional level of stress relief.

Practicing progressive muscle relaxation

Before practicing Progressive Muscle Relaxation, consult with your doctor if you have a history of muscle spasms, back problems, or other serious injuries that may be aggravated by tensing muscles.

Most progressive muscle relaxation practitioners start at the feet and work their way up to the face. For a sequence of muscle groups to follow, see the box below.

• Loosen your clothing, take off your shoes, and get comfortable.
• Take a few minutes to relax, breathing in and out in slow, deep breaths.
• When you’re relaxed and ready to start, shift your attention to your right foot. Take a moment to focus on the way it feels.
• Slowly tense the muscles in your right foot, squeezing as tightly as you can. Hold for a count of 10.
• Relax your right foot. Focus on the tension flowing away and the way your foot feels as it becomes limp and loose.
• Stay in this relaxed state for a moment, breathing deeply and slowly.
• When you’re ready, shift your attention to your left foot. Follow the same sequence of muscle tension and release.
• Move slowly up through your body, contracting and relaxing the muscle groups as you go.
• It may take some practice at first, but try not to tense muscles other than those intended.

Progressive Muscle Relaxation Sequence

The most popular sequence runs as follows:

Right foot* Left foot Right calf Left calf Right thigh

Left thigh Hips and buttocks Stomach Chest Back

Right arm and hand Left arm and hand Neck and shoulders Face

* If you are left-handed you may want to begin with your left foot instead.

Link: http://www.helpguide.org/mental/stress_relief_meditation_yoga_relaxation.htm

Relaxation technique 1: Breathing meditation for stress relief

With its focus on full, cleansing breaths, deep breathing is a simple, yet powerful, relaxation technique. It’s easy to learn, can be practiced almost anywhere, and provides a quick way to get your stress levels in check. Deep breathing is the cornerstone of many other relaxation practices, too, and can be combined with other relaxing elements such as aromatherapy and music. All you really need is a few minutes and a place to stretch out.

Practicing deep breathing meditation

The key to deep breathing is to breathe deeply from the abdomen, getting as much fresh air as possible in your lungs. When you take deep breaths from the abdomen, rather than shallow breaths from your upper chest, you inhale more oxygen. The more oxygen you get, the less tense, short of breath, and anxious you feel.

• Sit comfortably with your back straight. Put one hand on your chest and the other on your stomach.
• Breathe in through your nose. The hand on your stomach should rise. The hand on your chest should move very little.
• Exhale through your mouth, pushing out as much air as you can while contracting your abdominal muscles. The hand on your stomach should move in as you exhale, but your other hand should move very little.
• Continue to breathe in through your nose and out through your mouth. Try to inhale enough so that your lower abdomen rises and falls. Count slowly as you exhale.

If you find it difficult breathing from your abdomen while sitting up, try lying on the floor. Put a small book on your stomach, and try to breathe so that the book rises as you inhale and falls as you exhale. 

Link: http://www.helpguide.org/mental/stress_relief_meditation_yoga_relaxation.htm

Relaxation Techniques for Stress Relief (Finding the Relaxation Exercises That Work for You)

For many of us, relaxation means zoning out in front of the TV at the end of a stressful day. But this does little to reduce the damaging effects of stress. To effectively combat stress, we need to activate the body's natural relaxation response. You can do this by practicing relaxation techniques such as deep breathing, meditation, rhythmic exercise, and yoga. Fitting these activities into your life can help reduce everyday stress and boost your energy and mood.

The relaxation response: Bringing your nervous system back into balance

Stress is necessary for life. You need stress for creativity, learning, and your very survival. Stress is only harmful when it becomes overwhelming and interrupts the healthy state of equilibrium that your nervous system needs to remain in balance. Unfortunately, overwhelming stress has become an increasingly common characteristic of contemporary life. When stressors throw your nervous system out of balance, relaxation techniques can bring it back into a balanced state by producing the relaxation response, a state of deep calmness that is the polar opposite of the stress response. 

When stress overwhelms your nervous system your body is flooded with chemicals that prepare you for "fight or flight." While the stress response can be lifesaving in emergency situations where you need to act quickly, it wears your body down when constantly activated by the stresses of everyday life. The relaxation response puts the brakes on this heightened state of readiness and brings your body and mind back into a state of equilibrium.

Producing the relaxation response

A variety of different relaxation techniques can help you bring your nervous system back into balance by producing the relaxation response. The relaxation response is not lying on the couch or sleeping but a mentally active process that leaves the body relaxed, calm, and focused. 

Learning the basics of these relaxation techniques isn’t difficult, but it does take practice. Most stress experts recommend setting aside at least 10 to 20 minutes a day for your relaxation practice. If you’d like to get even more stress relief, aim for 30 minutes to an hour. If that sounds like a daunting commitment, remember that many of these techniques can be incorporated into your existing daily schedule—practiced at your desk over lunch or on the bus during your morning commute.

Finding the relaxation technique that’s best for you

There is no single relaxation technique that is best for everyone. When choosing a relaxation technique, consider your specific needs, preferences, fitness level, and the way you tend to react to stress. The right relaxation technique is the one that resonates with you, fits your lifestyle, and is able to focus your mind and interrupt your everyday thoughts in order to elicit the relaxation response. In many cases, you may find that alternating or combining different techniques will keep you motivated and provide you with the best results.

How you react to stress may influence the relaxation technique that works best for you:

How do you react to stress?
Do you tend to become angry, agitated, or keyed up?
You may respond best to relaxation techniques that quiet you down, such as meditation, deep breathing, or guided imagery
Do you tend to become depressed, withdrawn, or spaced out?
You may respond best to relaxation techniques that are stimulating and that energize your nervous system, such as rhythmic exercise
Do you tend to freeze-speeding up internally, while slowing down externally?
Your challenge is to identify relaxation techniques that provide both safety and stimulation to help you “reboot” your system. Techniques such as mindfulness walking or power yoga might work well for you

Do you need alone time or social stimulation?

If you crave solitude, solo relaxation techniques such as meditation or progressive muscle relaxation will give you the space to quiet your mind and recharge your batteries. If you crave social interaction, a class setting will give you the stimulation and support you’re looking for. Practicing with others may also help you stay motivated. 

Link: http://www.helpguide.org/mental/stress_relief_meditation_yoga_relaxation.htm