I have just started the process of seeing if my issues with zoning out to the point of almost passing out and my lapses in remembering are because of the concussions I have had decades ago. My neurologist is suspecting that I may have absentee epileptic seizures as a result of the concussions.

Believe me that neurologists sit up and notice when you are having symptoms 43 years after the initial injury. I have light and sound sensitivity. I also can get disoriented quite easily, especially when I am tired or need to eat. I have had a sleep deprivation study last week and am waiting for an MRI with contrast. We will go from there. My neurologist is stating that she is really committed to finding a solution and helping me cope with my disabilities.

This is only my experience and I hope that there are more neurologists out there that are trying to figure out solutions to these problems instead of thinking that they always correct on their own.

If I understand you correctly, you had an EEG with sleep deprivation and likely a sleep segment vs a sleep study. The MRI is a shot in the dark but worthwhile to rule out rare but serious issues..

As I said in the other thread, I had petit mal seizures that they now term absence seizures. My doc said to not consider them epileptic but rather trauma induced.

Have you had any health events in your life recently, maybe an illness, high fever, severe emotional trauma ? Do you sleep soundly with good breathing ? Or, do you snore ? Any nightmares or stressful dreams ?

A Neuro Psychological Assessment would be worthwhile to help you understand your memory and cognitive functions.