brain scans are done several ways

cat scans ....MRIs ....EEGs

basically they are looking for anything abnormal .....design of it (what parts are active) then they will test what parts are firing .......then they will take pics of it in layers and make a model out of in the computer system

if the place is really go they do the model first then over lay the reaction tests on it to give the doctor a better understanding of what is doing what when u see/hear something to provoke a reaction

it can be alot of fun .........but if u move around to much they will strap the head down or give u a mild trank to knock u down or out for a little bit

if u do not like closed spaces they do have whole room system where u can take the test but u are talking major money

as for out of the pocket cost a Cat and MRI plus trip to hospital (bed and all that/blood work/ iv bags ) 6000 bucks wacked my head on the street on a moped in july of this year ........5 hours later they told me go home