The lower beta state is that state of mind commonly experienced while awake and busy during the day. This is the type of frequency used in the Energizer programme. The brain wave amplitudes tend to be very small. This anxiety could be related to subconscious resistance to these states. The higher beta state is very stimulating and can be associated with anxiety. The higher beta state, often referred to as the gamma state, is experienced while wide-awake and highly aroused. Beta states above 20 Hz are generally classed as higher beta or gamma. It includes any brain wave with a frequency greater than or equal to 13 Hz (faster repetition than 13 times per second). The beta state is that state of mind that you experience when awake and active during the day. These frequencies are the least researched and are common in very deep trance states. The natural amplitudes are large in size. The epsilon state involves frequencies lower than 0.1Hz. The Delta state of mind involves frequencies from approximately 0.1Hz to 4Hz. The Delta and epsilon mind state is commonly experienced at night during deep sleep or possibly during the day by people experiencing depression or mental fatigue. It is believed by some scientists that high amplitude Theta frequencies accompany most (if not all) psychic activity. It is characterised by frequencies from 4.0Hz to 7.9Hz. It seems to be present in hypnogogic and hypnopompic hallucination. The theta state is commonly experienced in deepened states of meditation, at the onset and in lighter parts of sleep. Note: You can quickly induce alpha state by closing your eyes and generally looking upwards, allowing your eyes to roll backwards. The natural amplitudes tend to be larger than beta. The alpha state of mind involves frequencies from 8.0 to 12.9Hz. A typical example would be driving a car (how many times have you driven from work and barely remembered the journey?).
The alpha state is the one you experience whilst doing a mundane repetitive task with nothing particular on your mind. The alpha mind state is that state commonly experienced while the body is resting and the mind is calm. Beta, alpha, theta and delta are terms that medicine uses to indicate the rates of brain cell firing and the corresponding mental states associated with them. These firing rates are commonly thought to control mental states. These instruments measure the neuron firing rates of groups of brain cells. Electrical instruments (electroencephalographs) are commonly used by medical people to evaluate mental states.
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