Brain Wave Genereation :: essays research papers

supposition behind BrainWave GeneratorEEG and the cards nationEEG (Electroencephalography) engineering science is designd to measure headlands electrical vibrations from the surface of the scalp. The resulting EEG prototype exit contain frequency elements mainly below 30Hz. The frequencies are categorized into quaternity states as follows State Frequency range Amplitude State of perspicacity Delta 0.5Hz - 4Hz high (up to 200uV) Deep sleep Theta 4Hz - 8Hz low (5uV - 20uV) Drowsiness (also first interpret of sleep) Alpha 8Hz - 14Hz high (up to 200uV) Relaxed but alert Beta 14Hz - 30Hz low (less than 10uV) highly alert and foc utilize The dominant frequency in the EEG pattern tallys what shall be called the current state of the intellect. If the amplitude of the alpha range frequencies is highest, then the card is said to be in the alpha stage. Note, that other frequencies gloss over exist and it is impossible to give any "exact frequency your brain is operating on&q uot. However, later references to the brain states use the simplification of assumptive that such a single frequency exists. Entraining the brain to a sought after stateIf external stimulus is employ to the brain, it becomes possible to entrain the brain frequency from one stage to another. For example, if a person is in of import stage (highly alert) and a stimulus of 10Hz is applied to his/her brain for some time, the brain frequency is likely to change towards the applied stimulus. The effect will be relaxing to the person. This phenomenon is also called frequency following response. When the brains state is close to the applied stimulus, entrainment works more efficiently. Thus, when doing a sweep from one frequency to another, the start frequency should be as close to your current brain state as possible. The sweep speed should be such that your brains state changes steady with it, so that the difference never gets very large. In practice, it is difficult to determine your brain state without extra equipment (like EEG devices). However, you hindquarters quite safely assume that during the day your brain is in the beta stage (about 20Hz) and you can start the sweep from there. If you are already somewhat relaxed, you can use a start frequency of 15Hz or a few Hz lower. Stimulating the brain with binaural beat frequenciesThe easiest way of applying stimulus to the brain is via ears. Other senses could be used as well, and vision is actually used quite often (often in addition to hearing).