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Biofeedback EquipmentIn theory it is possible to use biofeedback without any equipment, simply by becoming more aware of your body and how it reacts. You could even begin biofeedback training with a device as simple as a thermometer.In practice most people prefer to use biofeedback machines to tell them about the way their mind and body is reacting. There are many different machines on the market and they vary tremendously in price and features, from simple home units for personal use to sophisticated research machines. You can buy both stand-alone, pocket-sized units and sophisticated multi-function devices that integrate with your PC and include detailed analysis software. Home biofeedback can be useful for personal development objectives such as relaxation, improved concentration, self control, etc. However if you are suffering from a medical condition then you should discuss it with your doctor.
GSR Biofeedback DevicesMany of the affordable home biofeedback machines use measurements of the skin. The most common of these is Galvanic Skin Response (GSR). These are normally available to buy at a good price, however as always you tend to get what you pay for.GSR works by attaching small electrodes to the skin and translating the signals into a sensory indicator - very often sound. For example, a GSR unit might emit a tone that changes in pitch and/or volume to tell me about the level of stress being detected via the skin.
EEG & EMG Biofeedback DevicesMore advanced biofeedback units use EEG biofeedback (neurofeedback) and/or EMG biofeedback (muscular activity). These cost more and usually provide more functions - for example digital readouts, time based averages and min-max facilities. The advanced EEG and EMG biofeedback machines are often intended for use by or in conjunction with a professionally qualified practitioner rather than by an individual alone.
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