Science of Electroencephalograms – Biofeedback
Electroencephalogram is a non-invasive electrical recording method to detect electrical activity in the brain. It’s typically non-invasive, using the scalp for the electrodes, but some invasive electrodes are also used, such as in electrocorticography. This type of biofeedback method has been used to treat a number of disorders in the past, including:
Other studies have demonstrated the accuracy of this method in measuring the brain’s electrical activity. Electroencephalogram (EEG) is based on the concept that the brain generates a response to external stimuli and that changes in its firing patterns can be detected by the EEG electrodes.
There are two types of electrodes used in this form of biofeedback
- The first is the static electrode. This is the electrode used in a traditional EEG biofeedback. This is usually placed on the head at the location where the brain is believed to be receiving the most stimulation, such as in the temporal lobe or even the cerebellum.
- The second type of electrodes is known as the dynamic electrode. These electrodes move up and down the scalp but not up and down.
The dynamic electrode is used in conjunction with a frequency generator, called a “frequency following” generator. The frequency of the generator and the static electrode can be adjusted to produce a series of pulses at different frequencies. When a pulse occurs at one frequency, it triggers another. This is referred to as “oscillations.”
Frequency following generators is also known as “turbulence generators,” because they are used to excite the same frequency multiple times. With the EEG, the frequency generator produces the same frequency over again, thus creating oscillations. The frequency following generator is the basis of this type of biofeedback. Read: Practical Guide for Biomedical Signals Analysis Using Machine Learning Techniques
In electroencephalogram biofeedback, the EEG electrodes are placed on various areas of the body, in order to vary the frequency and intensity of a stimulus. The goal of this method is to enhance an individual’s ability to focus their attention.
It has been shown to be an effective treatment for patients with
- Sleep disorders
- Attention deficit disorder (ADD)
- Obsessive-compulsive disorder (OCD)
- Attention-deficit/hyperactivity disorder (ADHD)
Bernoulli’s principle is also used in electroencephalogram biofeedback. This theory states that if there is more than one difference in a system’s speed or direction from a fixed point, the system will be unstable and will undergo oscillatory fluctuations. The brain responds to this instability by oscillating.
This principle is used in Bernoulli’s principle to generate an effect such as speeding up or slowing down a system. Bernoulli’s principle can be used to determine how fast a system is moving. It can also be used to determine the path of a system.
When there is an imbalance in one of the elements, as an imbalance in the speed of the oscillator, the system will have a different path or speed. As a result, there will be changes in the intensity and frequency of the stimulus.
Biofeedback is also being used to improve concentration and focus. The theory behind this concept is based on the fact that if an individual’s attention is trained to focus on a visual cue, they will be able to control it. and focus on the visual cue.
Biofeedback is often combined with other methods, including
- Relaxation techniques
- Relaxation meditation
This allows the mind to relax and focus on the visual stimulus for better results. An electroencephalogram biofeedback session can be used to improve focus and concentration, and also to enhance the nervous system.
In some cases, electroencephalogram biofeedback sessions may also be used as an anti-anxiety measure. Neurofeedback is also used to treat people with panic attacks and insomnia. Neurofeedback has been clinically proven to improve mental health.
The effects of electroencephalogram biofeedback include enhanced cognitive function, enhanced mental alertness, better memory, increased concentration, improved learning and retention, improved memory and more.
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