Intelle Brain The human brain is very extraordinary and fascinating. Research shows that the brain has between 100-200 billion nerve cells called neurons. Each of these neurons is connected to other thousands of neurons. The number of connections between neurons in the human brain is more than the stars in our galaxy. The neurons produce electricity when they communicate with each other. They pass information to each other using tiny electrical currents. When millions of neurons communicate with each other at once, they produce strong electrical activity. Some researchers estimate that an active brain can produce 10 watts of electrical activity. This is why the brain is called an electromagnetic organ. Brain electrical activity is described in terms of brain waves.
Brain waves are like radio waves as a form of electromagnetic energy that travels at the speed of light. Like radio waves -and all waves- brain waves have electrical frequencies. A frequency is the number of times a wave repeats itself in a second. It is like the frequency of your radio. The difference between radio waves, other electromagnetic waves such as x-rays and brain waves is in their frequency. The frequency is measured in cycles per second or Herts (abbreviated Hz), which means the number of cycles the wave travels in one second. A slower wave means a lower Hz number. Radio waves have a high speed of 50-1000 mega Hz, while the brain waves have a frequency between 1-100 Hz. Brain waves can be measured by using sensors or electrodes placed on the scalp. Sensitive medical devices are able to measure and record brain signals. EEG (electrocephalogram) is one of many devices that measure brainwave activity. Other devices include MRI, MEG & NIRS which measures blood flow of the brain.
Brain waves are formed when the neurons communicate with each other. This happens whenever we use our brain, for example when we think about something. Our thoughts are a bio chemical and electromagnetic energy that causes neurons to fire. The speed at which these neurons fire will create a frequency that can be detected by EEG device as waves. Brain waves can be produced not only by thinking, but also by different emotions, and behaviors. Brain waves have a tendency to change according to what we are doing, mentally or physically or emotionally. On the other hand, the current speed of the brain also determines our mental, physical and emotional state. They are directly linked to each other: the speed and the state, meaning either one can be the cause and also the result. Therefore, it is very important to know when and why brain waves change, and equally important to know how we change once the brain waves begin to change. We can also view brain waves as altered states of consciousness. Brain waves have different patterns or speeds.
You can know the state of a person simply by noticing their brainwave speeds. Neuroscience has discovered 4 main different speeds of brain waves: Beta, Alpha, Theta and Delta. Gamma brain waves were discovered only recently, and very little information are known about this magical brainwave. The effects of different brain waves are clear according to which dominant speed you are in, in a given moment of time. For example, if your dominant brainwave now is Beta which is the high speed wave, then you are wired or alert or even nervous. Theta brainwave means you are so relaxed that you may fall asleep anytime. If you want to move your state from being anxious to total relaxation, all you have to do is to move or change your brain speed from Beta to Theta, by ways of different tools. This means brainwaves can be the cause of your state or the result of your state.
Before we explain in detail the different categories of brainwaves, it is important to know that these speeds change according to what we are doing, feeling and thinking. Brain speeds vary depending on your activity during any 24 hours. To be able to shift between different brainwaves is a symbol of a healthy person. For example, if you are sleeping, without dreams, you are in effect in the slowest brainwave, the Delta state. Whenever the alarm clock starts ringing and you wake up, your brain speed shifts to a quicker speed, the Theta state. In this state, you are half asleep or very relaxed. You may stay in this state for about 5-15 minutes. When you get up, you are likely in the Alpha state, a faster brainwave activity. Finally,when you drive your car, it is normal that you are in the Beta state, being fully alert.
Research discovered that all brainwaves can be present at all times, but at different levels. This means if you are driving your car and the Beta state is dominant at that time, the remaining three brain states can be present but at a much lower level. Therefore, our brains do not restrict us to only "one" brainwave state. Our brain activity is the combination of all frequencies at any given point of time, but with different quantities and levels. Our brain has the ability to shift from one state to another, depending on different influences. However, some factors can cause the brain to be "stuck" in one state, usually a negative state, and this may cause mental disorders such as depression. Emotional stress is one major negative factor. These factors will be explained later.
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