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January 2011 - 6 Ways To Boost Your Brain Power

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Would you like to increase your brain power in 2011? More and more research is being done on the many secrets of the brain. I’d like to share part of an amazing article done by Emily Anthes for Scientific American online on what you can do to help your brain function at its peak.

The adult human brain is surprisingly malleable: it can rewire itself and even grow new cells. Here are some habits that can fine-tune your mind.

“Amputees sometimes experience phantom limb sensations, feeling pain, itching or other impulses coming from limbs that no longer exist. Neuroscientist Vilayanur S. Ramachandran worked with patients who had so-called phantom limbs, including Tom, a man who had lost one of his arms.

Ramachandran discovered that if he stroked Tom’s face, Tom felt like his missing fingers were also being touched. Each part of the body is represented by a different region of the somatosensory cortex, and, as it happens, the region for the hand is adjacent to the region of the face. The neuroscientist deduced that a remarkable change had taken place in Tom’s somatosensory cortex.

Ramachandran concluded that because Tom’s cortex was no longer getting input from his missing hand, the region processing sensation from his face had slowly taken over the hand’s territory. So touching Tom’s face produced sensation in his non-existent fingers.

This kind of rewiring is an example of neuroplasticity, the adult brain’s ability to change and remold itself. Scientists are finding that the adult brain is far more malleable than they once thought. Our behavior and environment can cause substantial rewiring of the brain or a reorganization of its functions and where they are located. Some believe that even our patterns of thinking alone are enough to reshape the brain.

Researchers now know that neurogenesis (the birth of new neurons) is a normal feature of the adult brain. Studies have shown that one of the most active regions for neurogenesis is the hippocampus, a structure that is vitally important for learning and long-term memory.

Neurogenesis also take place in the olfactory bulb, which is involved in processing smells. But not all neurons that are born survive; in fact, most of them die. To survive, the new cells need nutrients and connections with other neurons that are already thriving. Scientists are currently identifying the factors that affect the rate of neurogenesis and the survival of new cells. Mental and physical exercise, for instance, both boost neuron survival.

So what are the 6 ways you can boost your brain power?

  1. Exercise
  2. Diet
  3. Stimulants
  4. Video Games
  5. Music
  6. Meditation

Exercise

Mice that run on wheels increase the number of neurons in their hippocampus and perform better on tests of learning and memory. Studies of humans have revealed that exercise can improve the brain’s executive functions (planning, organizing, multitasking, and more). Exercise is also well known for its mood-boosting effects, and people who exercise are less likely to get dementia as they age. Among those who are already aged, athletic senior citizens have better executive function than do those who are sedentary; even seniors who have spent their entire lives on the couch can improve these abilities just by starting to move more in their golden years.

A variety of mechanisms might be responsible for this brain boost. Exercise increases blood flow to the brain, which also increases the delivery of oxygen, fuel and nutrients to those hard-working neurons. Research has shown that exercise can increase levels of a substance called brain-derived neurotrophic factor (BDNF), which encourages growth, communication and survival of neurons.

Of course, all this research does nothing to help explain dumb jocks.

Diet

The brain needs fuel just as the body does. So what will really boost your brainpower, and what will make you lose your mind? Saturated fat, that familiar culprit, is no better for the brain than it is for your body. Rats fed diets high in saturated fat underperformed on tests of learning and memory, and humans who live on such diets seem to be at increased risk for dementia.

Not all fat is bad news, however. The brain is mostly fat – all those cell membranes and myelin coverings require fatty acids – so it is important to eat certain fats, particularly omega-3 fats, which are found in fish, nuts and seeds. Alzheimer’s disease, depression, schizophrenia and other disorders may be associated with low levels of omeg-3 fatty acids.

Fruits and vegetables also appear to be the brain superfoods. Produce is high in substances called antioxidants, which counteract atoms that can damage brain cells. Researchers have found that high-antioxidant diets keep learning and memory sharp in aging rats and even reduce the brain damage caused by strokes. That’s food for thought.

On the Frontier

It’s not just what you eat that affects the brain. It’s also how much. Research has shown that laboratory animals fed calorie-restricted diets – anywhere from 25-50 percent less than normal – live longer than other animals do. And it turns out they also have improved brain function, performing better on tests of memory and coordination. Rodents on calorie-restricted diets are also better able to resist the damage that accompanies Alzheimer’s, Parkinson’s and Huntington’s disease.

Stimulants

Stimulants are substances that rev up the nervous system, increasing heart rate, blood pressure, energy, breathing and more. Caffeine is probably the most famous of the group. (It is actually the most widely used “drug” in the world.) By activating the central nervous system, caffeine boosts arousal and alertness. In high doses, though, this stimulation can go too far, causing jitters, anxiety and insomnia.

Cocaine and amphetamines are less benign. Although they work on the brain through different mechanisms, they have similar effects. Taking them increases the release of some of the brain’s feel-good neurotransmitters – including dopamine and serotonin – and produces a rush of euphoria. They also increase alertness and energy.

That all sounds pretty good, but cocaine and amphetamines are extremely addictive drugs and in high does can cause psychosis and withdrawal. The withdrawal symptoms are nasty and can lead to depression, the opposite of that euphoric feeling. And of course, an overdose can kill you.

Video Games

Video games could save your life. Surgeons who spend at least a few hours a week playing video games make one-third fewer errors in the operating room than nongaming doctors do. Indeed, research ha shown that video games can improve mental dexterity, while boosting hand-eye coordination, depth perception and pattern recognition. Gamers also have better attention spans and information-processing skills than the average Joe has. When nongamers agree to spend a week playing video games (in the name of science, of course) their visual perception skills improve. And strike your notions of gamers as outcasts: one researcher found that white collar professionals who play video games are more confident and social.

Of course, we cannot talk about the effects of video games without mentioning the popular theory that they are responsible for increasing real-world violence. A number of studies have reinforced this link. Young men who play a lot of violent video games have brains that are less responsive to graphic images, suggesting that these gamers have become desensitized  to such depictions. Another study revealed that gamers had patterns of brain activity consistent with aggression while playing first-person shooter games.

This does not necessarily mean these player will actually be violent in real life. The connections are worth exploring, but so far the data do not support the idea that the rise of video games is responsible for increased youth violence.

Music

When you turn on Queen’s Greatest Hits, the auditory cortex analyzes the many components of music: volume, pitch, timbre, melody and rhythm. But there’s more to music’s interaction with the brain than just the raw sound. Music can also activate your brain’s reward centers and depress activity in the amygdala, reducing fear and other negative emotions.

A highly publicized study suggested that listening to Mozart could boost cognitive performance, inspiring parents everywhere to go out and buy classical CDs for their children. The idea of a “Mozart effect” remains popular, but the original study has been somewhat discredited, and any intellectual boost that comes from listening to music seems to be tiny and temporary. Nevertheless, music does seem to possess some good vibrations. It can treat anxiety, insomnia, lower blood pressure, soothe patients with dementia, and help premature babies to gain weight and leave the hospital sooner.

Music training can bolster the brain. The motor cortex, cerebellum and corpus callosum (which connects the brain’s two sides) are all bigger in musicians than in non-musicians. And string players have more of their sensory cortices devoted to their fingers than do those who don’t play instruments. There is no agreement yet on whether musical training makes you smarter, but some studies have indeed shown that music lessons can improve the spatial abilities of young kids.

Meditation

Forget apples. IF reams of scientific studies are to be believed (and such studies usually are), an “Om” a day can keep the doctor away. Meditation, or the turning of the mind inward for contemplation and relaxation, seems to help all types of conditions – anxiety disorders, sure, but it can also reduce pain and treat high blood pressure, asthma, insomnia, diabetes, depression and even skin conditions.

And regular meditators say they feel more at ease and more creative than nonmeditators do.

Researchers are now illuminating the actual brain changes caused by meditation by sticking meditators into brain-imaging machines. For one, although the brain’s cells typically fire at all different times, during meditation they fire in synchrony. Expert meditators also show spikes of brain activity in the left prefrontal cortex, an area of the brain that has generally been associated with positive emotions. And those who had the most activity in this area during mediation also had big boosts in immune system functioning.

Meditation can increase the thickness of the cerebral cortex, particularly in regions associated with attention and sensation. (The growth does not seem to result from the cortex growing new neurons, though – it appears that the neurons already there make more connections, the number of support cells increase, and blood vessels in that area get bigger.)

Source:http://www.scientificamerican.com/article.cfm?id=six-ways-to-boost-brainpower

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