qEEG: a map of how your brain is working.
Quantitative EEG measures the electrical activity of your brain and maps it across regions and frequency bands. Those patterns help explain attention, sleep, mood and cognition, and they give us a starting point for evidence-based brain health protocols.
The Technology
How quantitative EEG works
qEEG is a non-invasive measurement of your brain's electrical activity. A soft cap fitted with sensors records the natural signals your neurons produce. There are no needles, no radiation and no contrast agents. Software then analyzes those signals and maps activity across different brain regions and frequency bands.
Unlike a standard EEG (used mainly to detect seizures or major abnormalities), qEEG quantifies subtle patterns: slow waves where there should be fast ones, asymmetries between regions, and weak connections that should be strong. These patterns track with how your days feel: focused or scattered, calm or anxious, rested or wired.
What it Shows
Patterns qEEG can reveal
qEEG is valuable across a wide range of brain health concerns. It is especially useful when sleep, focus, mood or energy problems don't have an obvious cause.
- Attention issues: slow-wave activity in frontal regions where alertness should dominate
- Sleep dysregulation: disrupted patterns as you move into sleep
- Anxiety or overactivation: excess fast-wave activity, particularly in the right hemisphere
- Depression or underactivation: frontal asymmetry between the left and right sides
- Post-concussion and TBI: patterns that can linger long after symptoms seem to resolve
- Cognitive decline: early connectivity markers that can show up before symptoms do
Candidates
Who qEEG is for
qEEG suits patients who want a deeper picture of brain function, usually because something hasn't responded to standard care. When trial-and-error medication, diet changes or general wellness plans haven't worked, measuring the underlying pattern is often the next step.
It also helps high performers who want to sharpen cognitive function. For athletes, executives and others like them, small gains in focus, sleep quality and stress regulation make a noticeable difference.
The Process
What to expect
Here is how a qEEG evaluation runs at ASA Health MD, from your first consultation to your results review.
- 01
Initial consultation
60–90 minute conversation with Dr. Lee covering history, current symptoms, and goals. We decide together whether qEEG is the right next step.
- 02
qEEG recording
45–60 minute session in our office. A soft sensor cap is fitted; we record at rest, eyes-open and eyes-closed, and during simple cognitive tasks.
- 03
Analysis
Your raw data is processed and compared with age-matched normative databases, which shows what is typical for your age and what is specific to you.
- 04
Results review
1–2 hour walkthrough of findings with Dr. Lee. You see your own brain map, understand the patterns, and review what they mean for your symptoms.
- 05
Treatment plan
Specific recommendations built from your qEEG findings, which may include neurofeedback, targeted protocols, lifestyle changes or medication when indicated.
Why ASA Health MD
Your qEEG, read by a physician
Normative comparison
Your qEEG is compared with age-matched normative databases, so we can see what is specific to your brain.
Integrated reading
On its own, qEEG is a partial picture. We read it together with your neurological exam, history and any other imaging.
Physician-interpreted
Dr. Lee reads your qEEG personally. It is never handed to a technician or sent to a remote reading service.
Treatment-oriented
Your qEEG shapes a specific treatment protocol. You leave the results review with a concrete plan.
Common Questions
What patients ask before their first qEEG.
ASA Brain
Other Brain evaluations
- Neurological EvaluationComprehensive neurological exam & history.Learn more
- SPECT ScanFunctional brain imaging.Learn more
- MRI ImagingStructural brain imaging.Learn more
- Trauma HistoryPhysical & emotional trauma assessment.Learn more
- Brain Health GuidelinesTreatments & protocols for optimum function.Learn more
Ready to evaluate?
Schedule your qEEG evaluation.
Start with a 60-minute consultation with Dr. Lee. We'll discuss whether qEEG is the right starting point for your specific concerns.
5508 W. Plano Parkway, Plano, TX 75093
