"Mana" is an interesting idea, Noddy. I love simple words that encompass complex ideas.
Okay, John Jones, I'll try to clear that up. What is meant by a brain disorder can be epilepsy, dementia, autism, asperger's syndrome, OCD, RAD, ADHD, schizophrenia - the list goes on and on.
I'm not a neurologist so I don't have access to a lot of PET scans but some can be found on the internet that show comparisons between "normal" brains and "disordered" brains. I'll see if I can find one for you.
Since we are talking about childhood experience here is a very interesting and relevent article on infant brain development:
http://www.childtrauma.org/ctamaterials/states_traits.asp
Here's a tiny bit of the article:
Quote:Abnormal micro-environmental cues and atypical patterns of neural activity during critical and sensitive periods, then, can result in malorganization and compromised function in brain- mediated functions such as humor, empathy, attachment and affect regulation . Some of the most powerful clinical examples of this phenomemon are related to lack of attachment experiences early in life. The child who has been emotionally neglected early in life will exhibit profound attachment problems which are extremely insensitive to any replacement experiences later in life, including therapy. Examples of this include feral children, children in orphanages observed by Spitz and Wolf (1946) and, often, the remorseless, violent child (Perry, Blakley, Pollard, in press).
Really though, if you Google "neurobiology" you will find more information than you can shake a stick at.
I'm curious whether you might be a Scientologist or an adherent of Intellegent Design Theory. If so, I know our debate will go in circles forever and it will hardly be worth the effort for either of us.