What is eeg in the marines for a reserve?

Would you be so kind as to clarify your question. I know what an eeg is but in what relation do you need to know this for a marine reserve?

Thanks 

Here is a list of acronyms

http://www.bordeninstitute.army.mil/published_volumes/war_psychiatry/acr.pdf

Here is what an eeg does and what it is for

An electroencephalogram (EEG) is a test that measures and records the electrical activity of your brain. Special sensors (electrodes) are attached to your head and hooked by wires to a computer. The computer records your brain's electrical activity on the screen or on paper as wavy lines. Certain conditions, such as seizures, can be seen by the changes in the normal pattern of the brain's electrical activity.

An electroencephalogram (EEG) may be done to:

• Diagnose epilepsy and see what type of seizures are occurring. EEG is the most useful and important test in confirming a diagnosis of epilepsy.
• Check for problems with loss of consciousness or dementia.
• Help find out a person's chance of recovery after a change in consciousness.
• Find out if a person who is in a coma is brain-dead.
• Study sleep disorders, such as narcolepsy.
• Watch brain activity while a person is receiving general anesthesia during brain surgery.
• Help find out if a person has a physical problem (problems in the brain, spinal cord, or nervous system) or a mental health problem.

Being an ex military man many years ago, the only reason I can think of why they would want to do an eeg is for the last reason. Is he mentally stable enough to be a marine or a marine recruiter. The base doctors should be able to tell him if he needs one and they will set one up for him if needed.

Does he have a high school diploma? Maybe he meant a ged?

Good luck and best wishes to you and your friend.

P.S. If you get further clarification of what he needs, let me know and I will be happy to research it further. 

Hopefully he didn't mean an EKG, an electrocardiogram which measures the electrical activity of the heart<>.  When one gets off RA status and is joining the Reserves or entering a program of their choice or is selected, sometimes an EKG is required in the form of  a required physical or the member is due for an over-40 physical which includes persons who are 39.  The test would be needed to monitor the heart rate to determine if the member is physically cable of withstanding and enduring physical activities or has developed any heart complications.