smaller cortex in adhd ?

[trainman04]

i watched this video it claims https://www.youtube.com/watch?v=u82nzTzL7To&t

''ADHD people have smaller cortex (usually frontal lobe) and smaller/thinner nerve tissue''

so could smaller brain regions in ADHD patients be due to low dopamine in these areas? I imagine if you have less dopamine meaning less activity/usage so it will become smaller.

I recently saw a article that said valproate and zyprexa decrease brain size, (dont remember specifics) but this tells me that it is due to neurontransmitters...

 

[TenPi]

I have read that the brain is made of agents that do different things and want different things. Split brain patients show this. Some are stronger than others. Cortex is the filter for these agents, either the agent is stronger for wanting to fuck around (aka why exercise is so helpful)