What is a qEEG?
Quantitative Electroencephalography (qEEG) is a procedure that processes the recorded EEG activity from a multi-electrode recording using a computer.
This multi-channel EEG data is processed with various algorithms, The digital data is statistically analyzed, sometimes comparing values with “normative” database reference values.
The processed EEG is commonly converted into color maps of brain functioning called “Brain maps”. The EEG and the derived qEEG information can be interpreted and used by experts as a clinical tool to evaluate brain function, and to track the changes in brain function due to various interventions such as neurofeedback or medication.
Watch how to setup a Brainwave Recording for QEEG Analysis
Quantitative Electroencephalography (qEEG) processing techniques and the use of modern analytic software to processes the EEG/qEEG gives us the ability to view the dynamic changes taking place throughout the brain during cognitive processing task.
This novel approach can be used to assist us in determining which areas of the brain are engaged and processing efficiently.
What is involved in a qEEG?
Preparation includes having a good night sleep before the evaluation and eating a healthy meal that includes protein prior to arrival at the office.
You are asked to wash your hair several times with a PH neutral shampoo and to not use any conditioner or hair treatments following.
Prior to your evaluation, you will complete a series of questionnaires that will help identify the areas of your brain that you are most concerned about.
On the day of your evaluation, you will spend about 2 hours at the office to have your data collected. An EEG tracks and records brain wave patterns. The electrodes record the electrical impulses in the brain .and send the signals to a computer that processes the results.
The test involves having a cap placed on your head that contains sensors that will read the electrical output of your brain. These brain waves are recorded in three conditions: eyes opened, eyes closed and during the task (22 minutes).
You are given opportunities for breaks, as needed. The test is non-invasive and just requires that you sit in a chair.
What are the uses of a qEEG?
Psychology and psychiatry typically assess via patient self-report or testing that looks at performance.
They are the only medical specialty that does not look directly at the organ it seeks to treat. This novel approach can be used to assist us in determining which areas of the brain are engaged and processing efficiently.
The results from a qEEG are useful in guiding various forms of treatment, including neurofeedback, biofeedback, diet, medication and life style interventions.