Quantitative Electroencephalography (qEEG) is an assessment in which the electrical activity of the brain (EEG) is simultaneously recorded from 19 locations on the scalp. The EEG activity is being analyzed and is compared to normative values with “normative”. The processed EEG is commonly converted into color maps of different brain functioning, for example, activity of a single location, coherence (communication between two brain locations), or asymmetry. These analysis allows to identify abnormalities on specific brain structures on specific brain activities.
Many people are familiar with how an EKG, Electrocardiogram, works for measuring if their heart is working properly. A qEEG works in a similar manner. However, qEEG measures your brain performance. Sensors are positioned across all areas of your brain and readings of your brain signals are taken in real-time. A qEEG Brain Map provides a snapshot of your brain functioning pattern. This is indicative of how your brain is operating most of the time. This information is useful in determining the brain pattern that is associated with your outward behaviors or symptoms.
The process starts with a 19-channel recording of the EEG in an Eyes Open and Eyes Closed condition. If the patient is able to minimize artifact for a prolonged period of time, a Cognitive Task condition recording may also be performed. The analysis begins with a visual inspection of the EEG across a wide variety of montages. This is followed by a Fast Fourier Transform Spectral Analysis to determine maximal peaks across 0-32 Hz activity.
No, the brain mapping session only reads information about how your brain is performing. The process only involves you sitting quietly while the computer takes its reading. Nothing is put into your system and nothing is done to you. It is completely non-invasive.
For the days preceding your scheduled test, you should keep in mind the preparations listed below:
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