Have you ever had a Visual Evoked Potential test? It is similar to an EEG except you look at a TV screen. There is also an Auditory Evoked Potential with sounds. They both look at how the brain processes visual or auditory stimuli.

A qEEG also includes these tests.

Usually, once you are awarded disability status, the employer usually is indemnified and the insurance company takes over.

Here are some clinics that do qEEG assessments.

Google BrainScope

Concussion | Neurology Center Main

QEEG - Brain Wellness and Biofeedback Center

Here are some other testing methods:

Quantitative measurement of post-concussion syndrome Using Electrovestibulography | Scientific Reports

More articles to read:

EEG Findings in Traumatic Brain Injury – qEEGsupport.com