Austin Biofeedback and EEG Neurotherapy Center|Austin, Texas

What Is A QEEG?

QEEG-guided EEG neurofeedback is state of the art therapy for many disorders, as well as for performance enhancement training.

The QEEG (quantitative electroencephalogram) is also known in popular terms as a "brain map". An electroencephalogram is a report on electrical activity within the brain that provides detailed information about brain function. The report is produced by an important biomedical device called an electroencephalograph. A Quantitative EEG differs from a traditional EEG in that it performs an extensive set of computerized statistical analyses on the collected raw EEG data. This provides the clinician with a great deal more specific information about brain function than a traditional EEG.

QEEG technology has been in use since the 1970's and research shows it to be highly reliable. It has the advantage of analyzing EEG components indiscernible in traditional visual assessment of the EEG. It may also identify very subtle components of the EEG that would be easy to overlook in the typical visual inspection.

The QEEG is a sophisticated and valuable tool and like any tool, its real value is determined by the skill of the professional using it. After the QEEG data is collected and processed, a 60-to-100-plus page report is generated. Hours of analysis are required by the QEEG-trained therapist to assess QEEG information in the context of all other clinical information relevant to the case. That combined information is then used to develop extremely effective and targeted therapeutic protocols for the patient or client.

The similarities and differences of human brains can be compared to fingerprints. Our fingerprints all look similar but in the small details they are each completely unique. The information derived from QEEG assessments allow us to account for the many small, but important differences in each brain when we design therapy sessions. That in turn, can lead to better, more cost-effective outcomes.

Important kinds of information quantified by the QEEG include:

A measure of the amount of electrical activity (in a range of different frequencies) at many standardized scalp locations. This information is called a "power analysis".

A measure of the nature of the connections, or communication pathways, between different locations on the brain's cortex (the wrinkled outer layer of the brain). This information is called a "coherence analysis".

These two measures alone provide a wealth of useful information for the QEEG-trained neurotherapist. A power analysis tells us where there are areas in the cortex with too little or too much of certain kinds of brain activity. The coherence analysis tells us how well different areas of the cortex are communicating with each other. Problems uncovered through either of these two kinds of analysis (or both) can relate directly to symptoms or performance difficulties experienced by the patient or client.

Among others, the QEEG includes a third form of analysis which provides indispensible information by comparing the QEEG data obtained from a patient or client with large QEEG databases collected from symptom-free individuals of the same age and handedness, who have normal brain function.

For our patients or clients, the process of collecting QEEG data is similar to collecting data for a traditional EEG. It is noninvasive. At Austin Biofeedback and EEG Neurofeedbck Center, a mesh cap with built-in electrodes is placed over the scalp in order to measure electrical activity in the brain. The electrode connections are then tested to make sure they will transmit accurate information. Typically, with a QEEG more electrodes are used, collecting more data than for a traditional EEG. This provides a more detailed "map" of brain activity and makes more comprehensive analysis possible.

When the electrode connections are verified, data collecting begins. Data is collected for periods of ten or more minutes at a time in two or more comparative states. In all cases, information is collected in an "eyes open" and in an "eyes closed" state. Depending on diagnosis or therapeutic goals, other states, such as, reading, memorizing, or performing other tasks are added.

At Austin Biofeedback and EEG Neurofeedback Center, QEEG testing is required for certain diagnoses. It is recommended in all cases, however, since QEEG-guided EEG neurofeedback can specifically target therapy and therefore may reduce the number of sessions required to achieve therapeutic objectives. Please call 512.794.9355 for more information.

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Austin Biofeedback and EEG Neurofeedback Center
3624 North Hills Dr., Ste. B 205, Austin, TX 78731
512.794.9355 or Fax: 512.794.0076
info@austinbiofeedback.com