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What is qEEG?

In the simplest terms, quantitative electroencephalography (qEEG) is the process in which the constant electrical activity of the brain is transformed into digital information and pictures, providing an explicit snapshot of the brain’s activity. It takes the derived data, and compares it to a database to determine the hyper- and hypoactivity within different brain regions, illustrating functionality.  

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Why qEEG?

The instrument has been widely studied with a 96.39% accuracy rate, 9.45/10 sensitivity rate, and 97.44% specificity rate.  Test sensitivity is the ability of a test to correctly identify those with the disease (true positive rate), whereas test specificity is the ability to corectly identify those without the disease (true negative rate). Presently, the qEEG has been utilized in over 120,000 research articles. Results have been accepted as an objective measurement of brain injury by the courts in the United States. 

The image below is an example of what can be seen from a qEEG assessment.

The top row reflects the absolute power in frequencies at each site. For example, in the upper middle there is an area of blue, reflecting decreased activity in the Alpha brain frequencies. This is associated with problems in multitasking and day to day functioning. In the second row there is an area of orange in the Delta frequencies, which reflects problems with sleep and issues with depression and chronic pain. The middle row is not routinely utilized in this clinic. The fourth and fifth rows show a bunch of lines, each indicating the connections not working together. This is associated with reduced cognitive efficiency, commonly seen post-trauma. There is no other instrument on the market that can empirically do this.

The top row reflects the absolute power in frequencies at each site. For example, in the upper middle there is an area of blue, reflecting decreased activity in the Alpha brain frequencies. This is associated with problems in multitasking and day to day functioning. In the second row there is an area of orange in the Delta frequencies, which reflects problems with sleep and issues with depression and chronic pain. The middle row is not routinely utilized in this clinic. The fourth and fifth rows show a bunch of lines, each indicating the connections not working together. This is associated with reduced cognitive efficiency, commonly seen post-trauma. There is no other instrument on the market that can empirically do this.