Why does the brain lose its ability to function at optimal levels as we age? Many scientists believe we have a dwindling number of brain cells (neurons) as we age and this contributes to cognitive decline which is common as people grow older. We may begin to notice that we cannot remember well short-term, and there is a sort of "brain fog" that dulls thinking. It is increasingly difficult to learn new things and IQ has declined. Sleep may be more difficult, and we may be sleeping less and feeling fatigued during the day. If you have any of these symptoms, you probably have a fewer brain cells now than you need for sharp, clear thinking and optimal brain function.
Above is a graphic that illustrates brain cells or neurons and synapses. Neurons are cells that send and receive electro-chemical signals to and from the brain and nervous system. By the time we reach middle age, we have only about 86 billion brain cells left. But, at birth, scientists estimate that we have about 100 billion neurons in the brain. The neurons in the brain are unlike other cells in the body. Other cells divide to maintain the organ system. The neurons in our brains do not divide, they simply die after some years. Some scientists estimate that we could lose about 85,000 neurons per day. This loss of brain cells may be the fundamental cause of cognitive decline in older adults.
Neurogenesis Is Vital For Maintaining A Healthy Brain
So, it is important that the brain create new neurons to maintain the ability of the brain, or else we lose cognitive ability as we age. In our youth, learning is easy and the mind is nimble and remembers with no effort. As we get older and the number of neurons decline, short-term memory becomes less dependable, it is harder to learn something new, the mind seems foggy and long-term memories are full of gaps.
Is it possible to grow new brain cells and regenerate our brains to that youthful state and beyond? Yes! Neurogenesis is the scientific name for our ability to create new brain cells. A University of Massachusetts study, Mindfulness Practice Leads To Increases In Regional Brain Gray Matter Density, revealed that meditators may be benefiting from an actual growth of new brain cells. The researchers report that those who meditated for about 30 minutes a day for eight weeks had measurable changes in gray-matter density in parts of the brain associated with memory, sense of self, empathy and reduced stress.
Meditation practices, such as Mindfulness Meditation or Transcendental Meditation or Atmavedi Meditation are ways of exercising the brain, and exercising the brain in this way is thought to be a catalyst for neurogenesis - the production of new brain cells.
What is it about meditation that causes neurogenesis? When we meditate, overall brain frequency slows down from fast Beta (12 to 38 cycles per second) where the conscious thinking mind is engaged in random thoughts, to Theta (3 to 8 CPS) where the mind enjoys peace and calm and lack of thoughts. Topographic brain mapping shows us that at first during meditation only a small part of the brain will be in the Theta frequency band while the rest of the brain is exhibiting Alpha and Beta. During this time we may experience many random thoughts along with the thinking of the mantra. Then as our meditation continues, more of the brain exhibits Theta and thoughts become less and may even disappear as we experience unbounded awareness. As more and more of the brain becomes coherent and Theta predominates, the chemistry of the brain resets and neurogenesis takes place.
How the Conscious Thinking Mind Functions
The conscious thinking mind, as it operates, uses the machinery of the brain and we know from EEG (electroencephalography) topographic brain mapping research that the brain assumes various frequencies as it operates. The brain functions like an electrical machine in certain frequency bands that have been shown to correspond with mental activity of the conscious thinking mind, in the cerebral cortex of the brain. At the root of all our thoughts and emotions is the communication between neurons within our brain. Brainwaves are produced by synchronized electrical pulses from masses of neurons communicating with each other.
Brainwaves are detected using sensors placed on the scalp. They are divided into bandwidths to describe their functions. Brainwaves change according to what we are doing and feeling. When slower brainwaves are dominant we can feel tired, slow, sluggish, or dreamy. The higher frequencies are dominant when we feel wired, or hyper-alert.
Brainwave speed is measured in Hertz (Hz or cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.
Delta waves (.5 to 3 Hz)
Delta brainwaves are slow, low frequency and deeply penetrating. They are generated in deepest meditation and dreamless sleep. Delta waves suspend external awareness and may be the source of empathy. Healing and regeneration are stimulated in this state, and that is why deep restorative sleep is so essential to the healing process.
Theta waves (3 to 8 Hz)
Theta brainwaves occur most often in sleep but are also dominant in deep meditation. This level functions as our gateway to learning and memory. In Theta, our senses are withdrawn from the external world and focused on signals originating from within. It is that twilight state which we normally only experience fleetingly as we wake up or drift off to sleep. In Theta we are in deep meditation or in a dream. There can be vivid imagery, intuition and information beyond our normal conscious awareness. Research indicates that extended periods of coherent theta (15 minutes or longer) normalizes brain chemistry and causes the hippocampus to create new brain cells. These 15-minute periods of coherent Thera are the catalyst for Neurogenesis.
Alpha waves (8 to 12 Hz)
Alpha brainwaves are dominant during quietly flowing thoughts, and in some meditative states. Alpha facilitates being in the present. Alpha is the resting state for the brain. Alpha waves aid overall mental coordination, calmness, alertness, mind/body integration and learning.
Beta waves (12 to 38 Hz)
Beta brainwaves dominate our normal waking state of consciousness when attention is directed towards cognitive tasks and the outside world. Beta is a ‘fast’ activity, present when we are alert, attentive, engaged in problem solving, judgment, decision making, and engaged in focused mental activity. Continual high frequency processing is not a very efficient way to run the brain, as it takes a tremendous amount of energy.
Gamma waves (38 to 42 Hz)
Gamma brainwaves are the fastest of brain waves (high frequency, like a flute), and relate to simultaneous processing of information from different brain areas. It passes information rapidly, and as the most subtle of the brainwave frequencies, the mind has to be quiet to access it. Gamma was dismissed as 'spare brain noise' until researchers discovered it was highly active when in states of universal love, altruism, and the "higher virtues". Gamma is also above the frequency of neuronal firing, so how it is generated remains a mystery to most scientists. We understand Gamma is the frequency of the subtle mind and it manifests in the physical brain functions in conjunction with the subtle mind during witnessing of daily life. A greater presence of Gamma indicates rising or established Cosmic Consciousness.
Changes in Brainwave Frequencies During Meditation
Normal waking state consciousness is characterized by predominately Beta frequencies in the cerebral cortex - this corresponds to the activity of the conscious thinking mind as it is thinking and planning. When we sit to meditate, the practice of Dharana, or thinking the mantra, causes Alpha to first overtake the Beta frequencies, and then eventually an island of Theta will appear as the meditation deepens. In advanced meditators we see this island of Theta arise more quickly than in new meditators. If the meditation becomes very deep this island of Theta will become very large and may encompass the entire cerebral cortex. The person is experiencing the separation of the conscious thinking mind and the subtle mind as Dhyana arises.
Theta is the catalyst for Neurogenesis
If the period of coherent Theta is maintained for 15 minutes, the brain chemistry resets and Neurogenesis begins. Also we believe that the Theta frequency is the gateway to the experiences of higher states of consciousness and will come just before the meditator transitions to experience Nirvana.
Is it possible to influence the brain directly and produce a desired experience? Yes it is, through the technique of brainwave entrainment. Brainwave entrainment, also known as "neural entrainment", refers to the capacity of the brain to naturally synchronize its brainwave frequencies with the rhythm of periodic external stimuli, most commonly auditory, visual, tactile or magnetic pulse. Brainwave entrainment technologies are used to induce various brain states, such as relaxation or sleep, by creating stimuli that occur at regular, periodic intervals to mimic electrical cycles of the brain during the desired states, thereby "training" the brain to consciously alter states. Recurrent acoustic frequencies, magnetic pulses, flickering lights, or tactile vibrations are the most common examples of stimuli applied to generate different sensory responses. 
We can produce a physical stimulus in the brain that will cause the brain to switch into the Theta frequency. If we do this during a time when we are also practicing Dharana and Dhyana, we find the practice of these techniques is facilitated by this cooperation of the physical brain, and an actual experience of Nirvana is produced. If we guide the brain through the normal frequencies of natural healthy sleep patterns (Alpha, Theta and Delta), then the experience is more restful and peaceful sleep. But also because the brain is experiencing the Theta frequency for long periods of time during this guided sleep process, the brain will spontaneously create new brain cells.
Typically, we meditate for 20 to 30 minutes, twice a day. This time spent in meditation may give the meditator a good boost in new brain cells but the daily production of new brain cells may vary considerably, depending on the quality of the Theta time in each meditation. However, there is another important time when the brain can experience the Theta frequency and create new brain cells - every night during sleep.
In every sleep cycle there is an opportunity for 10 to 50 minutes of Theta, but like meditation, this time in Theta may not be consistent unless we use the Neurogenesis Vitara to guide the mind through the 5 sleep cycles and ensure that the brain experiences long periods of Theta frequency so there is maximum production of new brain cells each night.
The Neurogenesis Vitara is a device that broadcasts magnetic pulses into the physical environment that causes brainwave entrainment in natural sleep cycle frequencies (Alpha, Theta and Delta) and simultaneously transmits primordial frequencies into the Prana Field using the Vedic Vitara Technology®. The result is a night of deep, peaceful and restful sleep, a sense of restful alertness and awareness of the body during sleep, a gateway into the experience of Lucid Dreaming, and the spontaneous production of many new brain cells. In the morning we awaken refreshed, clear, happy, positive and energetic as we have taken a step toward higher consciousness.
Neurogenesis All Day and All Night
We see how it is possible to trigger neurogenesis during meditation and sleep. But is it possible to trigger neurogenesis at other times, for example during the day while at work in a desk job? Yes, this is possible. If you have an occupation that where you sit at a desk during the day, you can have a Neurogenesis Vitara on the corner of your desk and use the special daytime neurogenesis modules to entrain the brain to the Theta frequency while you work. Your mind will go into a very creative state, a blissful state of connection to Higher Consciousness and neurogenesis will be triggered while you go about your daily work routine. Soon every company with employees who spend their days in the office will provide each employee with a Neurogenesis Vitara. All such employees who have a Neurogenesis Vitara will become more creative, peaceful and productive, day after day.
Vedic Vitara Technology
Vedic Vitara Technology is included in the Neurogenesis Vitara to provide a subtle but very powerful influence for development of higher states of consciousness. During each meditation and sleep cycle we also have the influence of the 10th Mandala of the Rig Veda. The frequencies generated by the Rig Veda are the primordial frequencies that actually created the perfect Universe and perfect human bodies. In order to create this Universe, Lord Brahma (the Creator) performed a long meditation that took Him thousands of years. At the conclusion of this meditation the entire Universe and all of the first generation of human beings suddenly manifested. This meditation was samyama on the 432,000 mantras of the Rig Veda. Samyama is a special meditation at the heart of the creation process. Maharishi Patanjali gave us a comprehensive text on how to perform samyama and achieve perfections in life - siddhis. Lord Brahma is the foremost expert on the practice of samyama and used this technique to create the entire Universe.
The Rig Veda is divided into 10 Mandalas and each Mandala has a specific purpose. The 10th Mandala creates the pure Satyug consciousness of this Universe. When the human brain is exposed to the mantras of the 10th Mandala while in a coherent Theta state, it has an amazing Neurogenesis effect that produces Satyug neurons. A Kaliyug neuron has DNA that is only about 10% active so the neuron is able to function at about 10% of its inherent ability. A Satyug neuron has DNA that is 100% active, resulting in a neuron that is far more capable. The Neurogenesis Vitara includes the Vedic Vitara Technology which transmits the 10th Mandala of the Rig Veda into the Prana Field during the Theta brainwave entrainment sessions and this results in Satyug Neurogenesis - the production of Satyug Neurons.
Now we have a mechanism for not only restoring our neuron level back to 100 billion neurons that we had at birth, but these new neurons will be Satyug Neurons, resulting in a remarkable Satyug capable brain and nervous system. With the Neurogenesis Vitara we maximize the production of Satyug Neurons everyday so that in a few years we will have not only restored our brain to full 100 billion neuron capacity but there will also be billions of new, highly capable Satyug neurons that should significantly increase IQ and overall cognitive functioning. In Satyug the typical IQ is 100,000 due to the Satyug neurons in the brain. In Kaliyug the typical IQ is 100. Imagine the increase in IQ for a brain with 10 billion Satyug neurons - perhaps 300 or higher is possible.