A QEEG assessment, also known as a Quantitative Electroencephalography assessment, is a procedure that involves the analysis of the electrical activity of the brain using an electroencephalogram (EEG). It is a non-invasive and objective method of measuring and quantifying brainwave patterns.
During a QEEG assessment, electrodes are placed on specific locations of the scalp to record the electrical signals produced by the brain. These signals are then amplified and processed to extract meaningful information about brain function.
The main purpose of a QEEG assessment is to identify patterns and abnormalities in brainwave activity that may be associated with various neurological or psychiatric conditions. By comparing an individual's brainwave patterns to a normative database or established norms, QEEG can provide insights into brain functioning and potential dysregulation.
What to Expect From QEEG Assessments
QEEG Assessments are done in three steps:
Step 1: Either in-person or online you will have an intake interview where the clinician will ask you questions about your reason for seeking treatment, your current symptoms or challenges, and any relevant personal or family history. This interview will help the clinician understand your unique situation and develop a treatment plan tailored to your needs.
Step 2: The QEEG data acquisition involves the following:
-Preparation: Before the procedure, the client is typically asked to wash their hair to remove any oils or products that may interfere with the electrode placement. It's important to have a clean scalp for accurate measurements.
-Electrode placement: The client's scalp is then prepared by gently scrubbing it with an abrasive gel or a mild abrasive paste. This helps to reduce impedance and improve the quality of the EEG signal. Afterward, small metal discs called electrodes are attached to specific locations on the scalp using a conductive gel or paste.
-Recording: Once the electrodes are in place, the client is typically seated comfortably in a chair or lying down. The electrodes are connected to an EEG amplifier, which records the electrical activity of the brain. The client is usually asked to relax and remain still during the recording to minimize artifacts and ensure accurate data collection.
-Data collection: The EEG recording typically lasts for a specific duration, which can range from a few minutes to an hour or more, depending on the purpose of the assessment. During this time, the EEG amplifier captures the electrical signals produced by the brain in real-time.
-Data analysis: After the recording is complete, the raw EEG data is processed and analyzed using specialized software. The software applies various algorithms and statistical techniques to extract meaningful information from the EEG signals. This analysis can include measures such as power spectral analysis, coherence analysis, and event-related potentials.
-Interpretation: The processed data is then interpreted by a trained professional, such as a neurologist or a neurofeedback practitioner. They examine the patterns and characteristics of the brainwave activity to identify any abnormalities or deviations from the norm. This analysis can provide insights into brain function, such as identifying areas of overactivity or underactivity, as well as potential biomarkers for specific conditions.
Step 3: Report and Feedback
Report and recommendations: Based on the interpretation of the QEEG data, a comprehensive report is generated. This report typically includes a summary of the findings, any identified abnormalities, and recommendations for further evaluation or treatment. These recommendations may involve additional assessments, such as diagnostics, or specific interventions like neurofeedback training, biofeedback training, and/or psychotherapy.