Culture as we know it is generated from thoughts, emotions, attitudes and behaviors, networks of symbols, values, beliefs, and sensory perceptions. Culture itself also changes, differs and is transferred among generations. Memetics is a new field of science that tries to understand questions such as How does the mind work? How do humans learn and develop? How does culture form and transfer to future generations?

One of the major tenets of memetics is the meme, or meme concept. The meme concept is assumed as a mental unit to understand the structure and function of culture. Symbols (imaginations), cognates, archetypes, images, concepts, values, beliefs, emotions, attitudes, and behaviors that are produced inside the human mind are either memes or a meme set. Memes are described as mysterious codes of behavior, and the main production unit of reality and function of the human mind. Concepts like mind, cognition, and memory as well as the functioning of the genes and viruses have been instrumental in the development of the meme.

If we consider the human brain as a computer, genes can be regarded as units that make up the hardware, and memes as units for software. Speech and language skills enable the formation and transfer of memes that build mind and culture. Forms of literature and different sciences are also memes that help define a specific culture and civilization. It is accepted that memes are units that code, reproduce, and store ideas, emotions, and behaviors.

Since memes can only be reproduced in the mind and transferred via the brain’s activities, they are also described as the viruses of the cultural world. The common feature of biological and computer viruses is that they leak into the system by concealing themselves, and thus infect other structures in the medium by replicating there. Through memes, acting as agents (viruses) that reproduce and diversify ideas, culture is transferred via media, speech, and mass communication devices. One such example of this would be commercials. Commercials and other forms of advertisements are produced by utilizing powerful memes.

Genes and the laws of genetics help us to understand memes. Genes and memes are very similar to each other in terms of working principles. Just like genes, memes are also multidimensional and multifunctional. The roles that genes play in the biological world are similarly carried out by memes in the mind. There are regulatory memes, just like regulatory genes. There are immunoglobulin genes in charge of protecting against diseases, just as there are memes that guard against bad, harmful, and unwanted cultural practices. Ethical teachings, decency, the concept of right and wrong, lawful and unlawful are examples of memes that conserve a culture’s spiritual and ideological world.

Genes have helped the brain to develop in such a way that they store and reproduce memes. The synapses and neural networks of the brain are drawn towards certain memes. Neural genes and their products (neurotransmitters, neural networks and synapses) work in conjunction with these memes, spreading their content.

Knowledge is spread in this way. Like unlocking a door is dependent on a complete match and fit of the key and lock, the production, storage, reproduction, and transfer of memes relies on fitting with the proper genes. In other words, there is a high level of adaptation and association in between memes and memetic structures that are encoded into the structure of the brain. Therefore, not every meme can find its place in each mind; likewise, not every brain can accommodate and propagate all meme forms. This relation explains both why humans have different interests and respond differently to the same stimulant. In the meantime, it sheds light on the role of memes in the development of different mentalities, perceptions, and opinions.

Just as genes affect memes, memes also affect genes. Memes that form in the mind play a role in the expression, regulation, and control of genes. Memes such as emotions and ideas lead to alterations in the electrical activities of the brain. Furthermore, this triggers the excretion of neurotransmitter materials and the synthesis of transcription factors that switch gene activity on and off. Some of these memes can be pleasant, or they may be unwanted and disturbing. Thus, there is also a need for anti-memes, in order to neutralize unwanted and disturbing ones.

Belief systems, and conversely non-belief, produce different memes and this difference causes variations in a person’s neural gene activity. The mental processes of a person possessing right or wrong memes shaped by religious faith will not be the same compared to a person who does not have these memes. This is similar to the way a person with positive and joyful memes sees life in a different light than someone who has negative and harmful memes.

The task that antivirus programs have in the computer world is similar to the tasks of anti-memes in our mind. Of course, a person can influence this process through willpower. Good things represent nice and pleasant memes and wrong ones symbolize unwanted and harmful memes. Of course, each country or culture has different definitions of what is good and what is wrong. From this perspective, so-called “culture wars” are actually wars of memes and memetics. It is only possible to understand civilizations through analyzing the algorithms and memetic maps which were used to erect them.

Memes are investigated under three main groups according to the anatomical and functional structure of the brain. The first is memes that are stored and populated in the neocortex, which is associated with advanced mental functions such as willpower, consciousness, and intangible thinking. These memes are also defined as a cognate (a unit that represents the information generated and stored in the cortex) in cognitive sciences.

The second one is memes that surface, stay, and diversify in the mezolymbic region, which houses the centers for reward and pleasure, fight or flight, and which generates simple and complex emotions.

The third type is memes that are associated with the back region of the brain that is in charge of activities pertaining to physical necessities, such as eating and drinking. Due to the make-up of our brains, personal memes for desire, fear, and other habits are significantly different from each other. But these three different types of memes play a role in shaping brain chemistry and culture. The way we think originates from these different memetic maps via different memes of subconscious content. Due to the differing makeup in personalities, because of memes and genes, people have different degrees of willpower. In summary, if there is not a problem regarding the foundation of genetic and memetic interaction, we develop and mature with the capacity to separate the good, right, and decent memes from the wrong, harmful, and disturbing ones. In this process, emotions and behaviors that are inside and outside of our will are subject to regulation and the control of psychological and spiritual states, and genetic-memetic systems. We should not forget that our ideas, emotions and behaviors are determined under the control of our intelligence, conscience, and willpower, which are the dynamics of our soul.

All parents do everything they can to keep their children healthy. The creation of a baby in a mother’s womb still remains a wonder not fully explained by scientists. Birth has been a mystery in the life of human beings since the beginning of history. Religious sources show the phases of a baby’s growth in the mother’s womb, the perfect design of the environment that supports the needy baby with everything it needs, and its birth, all as examples of God’s mercy and power. Although the whole process of pregnancy develops with almost no interference from outside, there are some precautions that parents can take to have a healthier baby.

How to start taking care of a baby even before pregnancy

Science makes it clear that we should not wait until we hold a baby in our arms before we start taking care of him or her. But how can we take care of a baby even before conception? Well, one of the answers is quite simple: by taking folic acid! If women have enough folic acid, vitamin B complex, in their bodies before pregnancy, this vitamin B complex can reduce the risk of neural birth defects by up to 70%. Neural tube defects (NTD) are a group of congenital birth defects that influence the central nervous system. The neural tube forms in the embryo between 4 to 6 weeks after conception and then closes. The neural tube eventually becomes the baby’s spinal cord, spine, brain, and skull. If the neural tube does not close properly, the baby may have neural birth defects, in which case the baby lacks either a developing brain, spinal cord or both. NTDs occur very early in pregnancy, even before most women know that they are pregnant. The most common neural birth defects are anencephaly and spina bifida. In anencephaly, the brain is either not fully developed or is completely absent, while in spina bifida part of the baby’s spinal cord remains outside the body.

Folate deficiency and folic acid

Folate, also called vitamin B9, is a water-soluble vitamin. It is essential to human life and is found naturally in some foods such as liver, citrus fruits and juices, whole grains, and dark green leafy vegetables. Folic acid is the synthetic form of folate. Folic acid can be obtained from supplements and fortified breads and cereals. Both folic acid and folate work for the same purpose, and in this article the terms are used interchangeably.

In folate deficiency, the body is unable to transport folic acid to the brain, resulting in mobility problems, blindness and seizures. Pregnant women in particular can be at great risk of giving birth to low-birthweight, premature babies who may have neural birth defects. In children, folate deficiency can slow general development. In adults, a type of anemia appears in long-term folate deficiency. There are also other signs of folate deficiency such as headaches, loss of appetite, sore tongue, diarrhea, forgetfulness and irritability.

Why folic acid is important

Folic acid plays a very important role in various body processes including cell maintenance and repair, formation of red blood cells (which provide oxygen to tissue), formation of white blood cells (which defend the body against infectious disease), synthesis of DNA (hereditary material) and amino acid metabolism. It also plays a crucial role in preventing human illness. Folic acid supplements cannot prevent stroke or heart disease, but studies have shown that it can reduce the risk of heart attack and stroke. Recent research shows that it supports the functioning of blood vessels, which improves the blood flow to the heart. In addition, folic acid helps to protect against the development of some forms of cancer, particularly colon, cervical, esophageal, breast, and stomach cancers.

A number of scientific experiments have shown that people who suffer from Alzheimer’s disease have low levels of folic acid in their blood. Thus, it is not surprising that folic acid is crucial for brain function and plays an important role in mental and emotional health.

If you are a married woman and have plans to have a child some day, you should definitely start to take folate because by the time you know you are pregnant, your baby’s brain and spine will already have been formed. This is why it is important for women to maintain sufficient levels of folic acid all through their child-bearing age even if they are not planning a pregnancy.

Should only women take folic acid?

No, not really. Every adult man and woman should consume it every day to reduce their risk of heart disease, colon cancer, and stroke.

If this is a vitamin that could change our life forever, how much should we consume and where can we get it from? You can get your folic acid naturally from foods such as liver, nuts, peanut butter, dried peas and beans, oranges, tomato and pineapple juice, avocados, cantaloupes, asparagus, and leafy green vegetables. Some breakfast cereals with 100% of the recommended daily allowance per serving are Crunchy Nuggets, Multi-Grain Cheerios Plus, Product 19, Whole-Grain Total, Total Corn- Flakes, Total Raisin Bran, and Special K. It can also be obtained from other, less processed grain products such as bread, pasta, and rice. Taking a multivitamin containing the recommended daily allowance of 400 micrograms is another option. The following table suggests a variety of dietary sources of folate.

Table 1: Selected Food Sources of Folate and Folic Acid

* Items marked with an asterisk (*) are fortified with folic acid as part of the Folate Fortification Program.

^ DV = Daily Value. DVs are reference numbers developed by the Food and Drug Administration (FDA) to help consumers determine if a food contains a lot or a little of a specific nutrient.

Sehnaz Dogu Ekicikol obtained a master’s degree on Microbiology from Georgia State University.

References

• Zittoun J. Anemias due to disorder of folate, vitamin B12 and transcobalamin metabolism. Rev Prat 1993;43:1358–63.
• Herbert V. Folic Acid. In: Shils M, Olson J, Shike M, Ross AC, ed. Nutrition in Health and Disease. Baltimore: Williams & Wilkins, 1999.
• Kamen B. Folate and antifolate pharmacology. Semin Oncol 1997;24:S18-30-S18-39.
• Agriculture’s Nutrient Database Web site: http://www.nal.usda.gov/fnic/cgi-bin/nut_search.pl.
• http://dietary-supplements.info.nih.gov/factsheets/folate.asp
• http://www.cdc.gov/ncbddd/folicacid/

The discipline in which medicine and engineering truly meet and face new challenges is the field of “biomedical engineering,” an emerging discipline that is only a few decades old. In each sub-specialty of biomedical engineering, researchers study the human body, develop new materials and structures using engineering sciences, either as a treatment method for disease (e.g. artificial bone implants, artificial blood, vascular stents, cardiac valves, etc.) or to diagnose them (e.g. imaging methods and other diagnostic instruments in hospitals). Biomedical engineers face the incredible challenge of developing materials and devices that are compatible with biological systems and capable of working inside the human body to substitute bodily functions. Needless to say, the extreme complexity of the human body makes it impossible to mimic the original system or function of the organs in any way. However, even a poor replacement part or a functional improvement provides great benefit to the patients.

One of the most complex systems of the human body is the nervous system, which consists of the central area (the brain and the spinal cord) and the peripheral parts. The branch of biomedical engineering that deals with the nervous system is “neural engineering.” In this article, we will touch upon a specific subject in the broader area of neural engineering, that is, “neural prosthetics.”1 As the name implies, neural prosthetics is an area where engineering knowledge is utilized to treat neural disorders.

The building blocks of the nervous system are called “neurons.” Neurons generate electric pulses to communicate with each other. The fact that these electric pulses can be elicited by artificial means, i.e. by applying small electric currents to the neurons externally, forms the very foundation of the field of neural prosthetics. Neural engineers can input information into the nervous system by taking advantage of this phenomenon, called “neural stimulation.” Likewise, the information content of neuronal activity can be deciphered by recording the electrical pulses from the neurons and interpreting them according to neuronal function. This two way traffic, monitoring and controlling the neural activity, allows researchers in this field to develop methods of treatment for some sensory, motor, and psychological disorders.

Some of the most successful neural prosthetic applications have been in deep brain stimulation in Parkinson’s disease,

cochlear prosthesis in hearing impairment, bladder emptying and respiration in spinal cord injury, and vagus nerve (10th cranial nerve) stimulation in epilepsy and psychological depression. These are neural prostheses that are readily available as a treatment method for the given ailments. There is a whole host of others that are in the research and development phase. We will review a couple of examples.

In certain diseases of the inner ear hearing is lost as a result of damage to the hair cells inside the cochlea. In normal cochlea the sound information reaches these hair cells after traveling through the ear drum (tympanic membrane) and the structures of the middle ear, causing them to vibrate. This vibration of the hair cells is mechanically transported to the spiral ganglion cells that form the hearing (auditory) nerve. The hearing nerve carries the sound information to the brain in the form of electric pulses. The ganglion cells are healthy and functional even if the entire population of hair cells has been lost as a result of disease. Neural engineers take advantage of the fact that the spiral ganglion cells (which normally accept input from the hair cells) can be electrically stimulated, thus mimicking the function of the hair cells and producing the sensation of sound.2 During a simple surgical operation, the surgeon inserts an electrode into the ear canal which spirals into the lumen of the cochlea so that the sites where the electric current emits from the electrode are adjacent to the spiral ganglion cells (Figure 1). To summarize the principle of the operation; the audio signals are captured by a microphone, processed, converted into electric pulses (A in Figure 1), and transmitted to the implant over a transmitting antenna (B in Figure 1), or headpiece, held in place by magnets. The implant (C in Figure 1) applies the signals to the ganglion cells in the cochlea through tiny electrodes (D in Figure 1). The hearing nerve (auditory nerve) carries the sound information to the brain, where it is “heard.”

Even though the human spiral ganglion has tens of thousands of nerve cells that provide a rich sense of hearing, the cochlear implant, using only six stimulation contacts, can produce auditory perception with sufficient fidelity to enable a deaf individual to use an ordinary telephone.3 Individuals with cochlear implants can also improve their hearing with practice. Thousands of patients have been implanted with cochlear prostheses to date, including children.

The second neural prosthesis application we will review is the retinal prosthesis, which, unlike the cochlear implants, is still in the research phase. Retinitis pigmentosa and age-related macular degeneration both lead to photoreceptor degeneration in the eye and result in a significant visual deficit or blindness.4 A growing body of research supports the feasibility of replacing the function of the photoreceptors with an electronic device. 5–7 A retinal prosthesis is analogous to the cochlear implant in many ways. In a healthy retina, the photoreceptors initiate a neural signal in response to light. In a retinal prosthesis, electrical pulses are utilized to initiate a neural response in the remaining cells of the retina, the bipolar and ganglion cells. It is hypothesized that the perception of shapes and images will be possible through pattern stimulation of the retina. Initial results are encouraging, but the quality of vision that can be attained with this approach is still a question to be answered. A conceptual retinal prosthesis system is shown in Figure 2. The system consists of an external unit coupled to an implanted stimulator with a wireless link. A video camera in the external unit captures an image and converts it to digital data. The implanted unit receives the signal, recovers power and data from the signal, and generates the stimulating current. The stimulus pattern is applied to the retina via the electrode array, which contains distinct electrodes that interface at many locations on the retinal surface. Recent implants in human subjects suggest the feasibility of this approach where individuals attain perception of bright dots in the visual field called ‘phosphenes.’ Furthermore, blind subjects are able to perceive edges when a few of these bright dots are lined up in their visual field.

Figure 3: A conceptual diagram of a Brain-Computer Interface for high level spinal cord injury or patients with ‘locked-in syndrome’ (adapted from Wolpaw et al., see note 9). The recorded neural activity from the motor cortex is processed and converted into command signals to control, for instance, a wheelchair, or to generate electrical signals to activate hand muscles for grasping an object.

Both cochlear and retinal implants are sensory prostheses, i.e. aids for sensory impairments. Another family of neural prostheses deals with motor impairments. Severe motor disability results from high level spinal cord injuries (quadriplegia) where most of the body is paralyzed, sparing only some face, neck, and shoulder muscles. Quadriplegic individuals are in extreme need of a means to control their environment; they need to be in control of their wheelchairs, bed, the room temperature, lights, TV, etc. Because of the level of paralysis it is impossible for them to generate any control signal, except perhaps by sipping or puffing on the end of a tube, which produces a very poor control signal. In the case of a ‘locked-in syndrome’ the condition of the patient is even more serious, with only some functions remaining in the facial muscles. The term ‘brain-computer interface’ has been coined to refer to attempts whereby the motor output of the brain is recorded and interpreted to generate the control signals needed by these patients (Figure 3,9). The ultimate objective of this research will be accomplished when the patients are able to control anything they need to control in their environment, including a computer. The brain-computer interfaces vary in the invasiveness of the approach. The least invasive methods utilize the electroencephalogram (EEG) signals recorded from the scalp. Unfortunately, the signal quality is poor and only ‘on/off’ type of command signals can be generated using this method. In the most invasive, yet most successful applications, an array of electrodes is implanted directly into the motor cortex of the brain at a depth of a couple of millimeters. The recorded signals contain volitional information as the patient makes intentions to move their arms or legs. These signals can be controlled by the patient, and they can in turn be used to control their environment. The current level of success in this type of BCI allows the user to have three dimensional control of a robot arm. This is of invaluable benefit to a quadriplegic individual.

Concluding Remarks: Reflections on Divine Wisdom

Even the subtlest parts of the nervous system are extremely complex. Just to name a few examples, from the highest centers in the brain down to the skeletal muscles in a descending order; the neural circuits of the short-term memory in the hippocampus, fine motor control circuits of the cerebellum, central pattern generators in the spinal cord, and even the control of skeletal muscles in graceful movements of the limbs are impossible to reproduce by artificial means. The Seal of Divine Design is clearly visible in these neural systems, as they are far more complex, far more compact, and far more functionally efficient than any system engineered by mankind. If anything, the growing experience in neurosciences teaches us that the vertebrate nervous system is full of wonders of engineering design. Therefore, it is a great blessing to be a student of both neurosciences and engineering disciplines. This bestows neural engineers with a unique perspective to understand the beauty embroidered into the human nervous system and contemplate on the Divine Wisdom. In spiritual terms, we may think of the human nervous system as a window opening to the works of Divine Wisdom, with manifestations of His Beautiful Names at the brightest level. It is an overwhelming joy to be able to open this window a crack, once in a while, and take a little peek.

References

1. Wise, K.D. ‘Silicon microsystems for neuroscience and neural prostheses,’ IEEE Engineering in Medicine and Biology Society Magazine, vol. 25, no. 5, pp. 22- 29, Sept.-Oct., 2005.
2. G.E. Loeb, ‘Cochlear prosthetics,’ Annu. Rev. Neurosci., vol. 13, pp. 357–371, 1990.
3. J. Helms, V. Weichbold, U. Baumann, H. von Specht, F. Schon, J. Muller, B. Esser, M. Ziese, I. Anderson, and P. D”Haese, ‘Analysis of ceiling effects occurring with speech recognition tests in adult cochlear-implanted patients,’ ORL J. Otorhinolaryngol Relat. Spec., vol. 66, no. 3, pp. 130–135, 2004.
4. E.L. Berson, ‘Retinitis pigmentosa. The friedenwald lecture,’ Invest Ophthalmol. Vis .Sci., vol. 34, no. 5, pp. 1659–1676, Apr. 1993.
5. E. Zrenner, ‘Will retinal implants restore vision?,’ Science, vol. 295, no. 5557, pp. 1022–1025, Feb. 2002.
6. J.F. Rizzo III, J. Wyatt, J. Lowenstein, S. Kelly, and D. Shire, ‘Perceptual efficacy of electrical stimulation of human retina with a microelectrode array during short term surgical trials,’ Invest. Ophthalmol. Vis. Sci., vol. 44, no. 12, pp. 5362–5369, 2003.
7. M.S. Humayun, J. Weiland, G. Fujii, R.J. Greenberg, R. Williamson , J. Little, B. Mech, V. Cimmarusti, G. van Boemel, G. Dagnelie, and E. de Juan, Jr., ‘Visual perception in a blind subject with a chronic microelectronic retinal prosthesis,’ Vision Res., vol. 43, no. 24, pp. 2573–2581, 2003.
8. Weiland, J.D. and Humayun, M.S., ‘A biomimetric retinal stimulation array,’ IEEE Engineering in Medicine and Biology Society Magazine, vol. 25, no. 5, pp. 14-21, Sept.-Oct., 2005.
9. Wolpaw J.R. et al., ‘Brain-computer interfaces for communication and control,’ Clinical Neurophysiolology, vol. 113(6), pp. 767-791, 2002.

Increasing brainpower

We can improve our brain’s memory, creativity, and intelligence by our own conscious effort and free will. Even though our brain is made of nerve tissues, it can grow if it is used, just like a muscle. Scientists are constantly amazed at its plasticity “ the ability to grow. Even for people over 80 years old, significant life-quality improvements can be achieved through intellectual activity.

Researchers at the University of California-Los Angeles studied the brains of 20 dead people. After examining the dendrites (tree-like communicating arms between muscles), they discovered that their length increased proportionally with a person’s education and lifestyle. Those with a college education and a mentally active lifestyle had longer dendrites than those with less education and an intellectually inactive lifestyle.

Animal studies seem to confirm the same result. For example, rats exposed to maze learning show an increase in dendrite growth and enhanced problem-solving ability. They form new synapses between neurons, which facilitates further learning. When they are moved to dull, non-challenging environments, dendritic material decreases and synapses regress. Neurons can grow and change throughout one’s life.

French philosopher and mathematician Rene Descartes (1596-1650) once said: It is not enough to have a good mind. The main thing is to use it well.(1) In this ever-changing information society, successful adaptation depends on expanding our minds through learning and creativity. Knowledge helps us advance to happiness, because happiness usually is tied to less stress (in our career or daily life), gives us greater travel and leisure opportunities, more autonomy and even more money. Love grows in a relaxed and happy atmosphere, so even emotional well-being depends on improving our brainpower.

By stimulating our brain more intensively, a curious thing happens: The inter-connections between neurons increase by developing new dendrites. These surplus connections make our brain work better, improve our memory, and protect us against diseases like Alzheimer’s by providing alternative connections.

Learning and brainpower

An increased sense of self-confidence and awareness originates from a large fund of knowledge. Even the number and variety of friends we have is directly proportional to the number of topics of interest and discussion we acquire. Knowledge also improves our ability to foresee future political, economic, and historical trends. Moreover, an improved understanding of history and cultures help us avoid the hazard of prejudice.

Understanding the world is like a jigsaw puzzle. The more pieces that we can fit in, the clearer the image and the greater the urge to learn and fill in more pieces. The more we learn, the more we wish to continue learning. Increasing knowledge is like an avalanche; for it gains a momentum of its own once it starts. Perseverance and some initial prompting are required, but the rewards soon pay off. Minds are kept young by continual use, and mentally active people tend to live longer. Learning is as important to our brain as exercise is to our body. Hence the process of learning should not cease right after graduating from high school or college.

Students are presented with an enormous amount of information to learn and memorize during the academic year. During vacation time, however, they shy away from reading or learning even about non-curricular topics because of the mistaken notion that the brain has a limited capacity and that new information will overwrite previous information. The brain has a virtually unlimited capacity to absorb, sort, and retain information. But stimulation is required. An athlete improves by exercise and training; the brain gets into shape the more it is used.

According to Life magazine’s July 1994 feature article on Brain Calisthenics, Golden claims that exercising your brain may do as much for your health as exercising your body. Research on an elderly group of nuns in Minnesota revealed that a daily diet of brain games kept them healthy, youthful, and relatively free from Alzheimer’s and other degenerative brain disorders. And, they were happy, active, and mentally sharp well into their nineties. Researchers attribute this to the brain’s capacity to grow new connections after receiving the proper kind of stimulation. Although the connection between continued brain activity and health remains unclear, we can say that neural stimulation seems to have a direct role in keeping the brain and body balanced, energetic, and healthy. And, it is surmised that increased brain stimulation provides more pronounced and long-lasting benefits.

We can increase our dendrites by engaging in newer activities. When we learn something, we use our whole brain and build new brain circuits. But once something becomes a routine, we only use a small portion of our brain, leaving the rest to atrophy. To prevent the loss or actually to increase the number of dendrites, they must be stimulated. In a Life magazine interview published in July 1994, Arnold Scheible, head of UCLA’s Brain Research Institute, suggested: The important thing is to be actively involved in areas that are unfamiliar to you. Anything that’s intellectually challenging can probably serve as a kind of stimulus for dendritic growth, which means it adds to the computational reserves in your brain.

However, the article pointed out a caveat for the occasional brain developer. It seems that although learning a new skill creates more neural dendritic connections, the growth stops once the skill is learned and the new connections may actually atrophy. Thus, the brain needs random and interactive exercise so that it cannot learn the exercise so well that it becomes a routine and so that it can better learn new things continually.

Learning is an art that requires practical tools to gather a broad knowledge base. For example, Dr. S. Ray has an interesting suggestion: Look up unfamiliar words in the dictionary and then write a reminder by the word indicating where you encountered it, whet-her in a book, a newspaper, or a conversation. If you saw it in Newsweek, write NW beside the word. If your professor mentioned it, write his name next to the word. If you come across a word in this article, put a smiling face near it. Next time you encounter this word, your previous annotation will help you form a better association and you will remember the word better.

Once you start learning new words, it is a pleasant surprise to encounter them again. Each new word becomes a personal friend that reinforces a memory. Consider the dictionary one of your most interesting friends. The more words we learn, the more we become aware of our surroundings. Words enrich our memory. Words form the thread on which we string our experiences, said the British philosopher Aldous Huxley (1894-1963).

Physical activity and brainpower

Physical activity increases mental function. Exercise induces the growth of capillaries (tiny blood vessels) in the brain. Aging can lead to the brain receiving less blood. Exercise throughout life works against the decreased mental functioning associated with old age. Yet, one must not overemphasize physical exercise.

In their book Healthy Pleasures, Ornstein (a psychologist) and Sobel (a physician) argue that our current health practices should be shifted toward a more intellectual approach. They claim that diets and physical exercises can punish and even harm the body, and that they might have side-effects and only a limited effectiveness. They opine that some of the rigorous body controls we tend to practice are more linked to the Protestant work ethic than real health benefits. Hence going to the gym is a work-out.

Stress and brainpower

One side-effect of stress is dullness in the brain. Therefore, whatever removes stress increases brainpower. There are several relatively new methods to improve brainpower (intelligence, creativity, learning ability). For example, listening to a precise combination of audio signals embedded on a cassette or CD beneath soothing music and environmental sounds can give the brain a very specific audio stimulus that gently creates deep meditation, removes stress, and creates emotional healing at a deep level. This causes new connections to be created in the brain.

This is accompanied by a deep, trance-like meditative state in which the brain produces a whole host of pleasurable neurochemicals, such as endorphins. Such a trance or meditation can be attained easily during deep and concentrated prayer. A soothing and relaxing atmosphere can be achieved during chanting, remembrance, or reciting holy texts and hymns.

The new pathways caused by these meditative states connect and synchronize the brain’s hemispheres, thereby causing whole brain functioning. The improvements in brainpower include learning, intuition, mental clarity, creativity, focus and concentration, and intelligence. This research is backed by Centerpointe Institute, which has a commercial product (Holosync) based on the above principle.

Stress also is tied to the burdens we are obliged to carry. Usually we think that we control our lives entirely and thus can control everything around us. As this is not even near the truth, the resulting condition is stress accompanied by depression. Again, a fine balance between faith in destiny and free will help us remove this stress and live an alleviated and spiritually relieved life. Said Nursi analyzes this concept in his Twenty-sixth Word.(2)

In addition to removing stress, the nervous system’s reorganization of itself to a new and higher level increases the stress threshold. At that point, many uncomfortable, dysfunctional feelings and behaviors go away, even if they might have been persistent until then. This is a deep and dramatic change in mental health: the release of anger, fear, and sadness, as well as the release of self-defeating behaviors, childhood traumas, and limiting decisions. Once these are gone, we can expect better relationships to emerge.

Thus it is like a virtuous cycle, because people who reach higher levels want to move to deeper meditation levels, just as athletes increase their mileage after mastering a certain distance. In these in-creased levels, the mind expands, grows, and becomes self-aware to a greater extent. Perhaps it also experiences a deeper meditative experience.

Health and brainpower

Adding years to your life and life to your years have always been challenging. The first one has been achieved for some, as life expectancy in developed countries increased by 30 years during the twentieth century due to improved food supply, housing, medicine, and many other factors. However, research in the last few decades proves that one can become even smarter by dendrite generation. At first, researchers told us that life-long physical training was one way to keep in good health. Now, since scientists know that the brain can be developed and enlarged, brain calisthenics have become even more important. The age-old dilemma of mind over matter has been resolved in favor of the mind.

A group of researchers has demonstrated that pleasure and positive states of mind are better for our health. This new intellectual approach to health is not only more powerful, but also has no side effects. Central to this claim are recent findings that even getting an education may add as much as 10 years to your health. That is why National Geographic featured John de Rosen in its 1986 book The Incredible Machine, which discussed old age. De Rosen, an artist, continued to paint until the week he died at age 91. The book notes: Some scientists believe that retirement to a sedentary lifestyle initiates or aggravates medical problems, thus shortening life. According to a study of retired people, adults over 65 can learn a creative skill, like oil painting, as readily as younger students. So retiring from a job in a sense means retiring from life unless supplemented by some other (preferably new) activity.

Investigating mental processes and brain efficiency

With their new imaging machines, scientists literally look into the brain and photograph the paths of mental processing to learn how the brain handles information. Each of the 100 billion neurons has dendrites (receptors), a central processor, and a cable to send the messages to the next neuron. Some years ago, scientists thought that these physical aspects were fixed at birth. Then Marion Diamond, a pioneer brain researcher who dissected Einstein’s brain, published Enriching Heredity. In it, she claimed to have found that the key areas of Einstein’s brain were very rich in dendrites due to the increased usage, and thus established that the brain is not fixed by heredity.

Another aspect of brainpower is efficiency. Dr. Richard Haier, a professor of psychology at the University of California, Irvine School of Medicine, used PET (positron emission tomography) scan images of brain metabolism to indicate mental efficiency. Newsweek (29 February 1988) reported his finding that smarter brains use less energy. Wired (May 1994) introduced to the general public his first works using PET to analyze the brain changes of Tetris players. In this article, he revealed the importance of neural efficiency. In other words, give a smart brain a hard cognitive task, like Tetris, and it will quickly learn to solve it using less of the brain and less rigorously. Less efficient brains seem to have difficulty localizing the task to the most appropriate processing centers. Therefore, there is wasted brain energy and needless redundancy (noise) in neural-net processing activity.

Newsweek (27 March 1988) featured Haier’s PET scans of SAT (Scholastic Aptitude Test) takers. The outcome seemed to differentiate be-tween sexes. Smart men who scored above 700 on the SAT math section worked their brains harder (less efficiently) than smart women. The PET images reveal how efficiently the brain works when processing a cognitive task. Therefore, before and after PET images may show how smart the brain, or neural-cognitive system, is as a function of how fast it learned how to minimize extraneous brain processing areas and focus energy on smaller, more productive areas.

We have been led to believe that we use very little of our brain. Ironically, the smarter the person is, the less of his or her brain seems to be involved in any particular task. It seems that dendrites use the shortest or most feasible path possible, and that the more numerous and longer the dendrites are, the more likely they are to have shorter paths between the nodes in the brain’s neural network. When the mind starts to process a task, it apparently engages a greater area of the brain to feel it out. However, the smarter brain-mind system will narrow in on the brain’s most appropriate processing area(s). Then, the rest of the brain is released to do something else, such as noisy chatter or just rest (which is rare). A less intelligent system might use more of the brain than is necessary. This may create a source of noise on the neural-net that distracts, disrupts, or derails the fast and efficient (consistent and accurate) data processing by the appropriate brain center(s).

Brain efficiency seems to be highly correlated with intelligence (or brainpower). Apparently, the less moving parts the less friction and noise! This would agree with certain research findings of meditators whose quieter and more alpha- and theta-dominant brains appear to be better at various cognitive and mental reflex tasks.

Conclusion

In conclusion, brainpower depends on many things: daily diet, physical and mental exercise, emotional state, stress, heredity and so on. It is not fixed or static, but has the ability to change and progress, so one can improve it by a combination of techniques that suit the individual. The discovery of new or improving existing techniques is open for further research in cognitive science.

Footnotes

1. http://serendip.brynmawr.edu/Mind/Descartes.html#Descartes.
2. The Words is available online at:www.sozler.com.tr/risnur/warning_word.htm.

References

• Centerpointe Institute, Holosync, http://www.trans4mind.com/holosync/.
• Diamond, Marion. Enriching Heredity: The Impact of the Environment on the Anatomy of the Brain. Free Press: 1988.
• Ornstein, R. and D. Sobel. Healthy Pleasures. Addison-Wesley, 1989.
• Poole, R. M. (ed.) The Incredible Machine. National Geographic Society: 1992.
• Report from the Biomedical Newsletter. Lippincott-Raven Publishers, n.d.
• Sahelian, Ray. Be Happier Starting Now: A Medical Doctor Explores the Fascinating Field of Happiness. Longevity Research Center: 1995. See Chapter 9.
• www.brain.com.