Re: IQ and Testosterone?

Bryant (
3 Sep 1996 07:19:16 -0600

In article <50g46l$>,
bambam <> wrote:

>How is it that you think an MRI can show what portion of
>your brain is in use at any given time? Brain activity cannot be shown on an
>MRI - it is for visualizing tissues - especially soft tissues.
>So, while it can show physical damage to the brain, it cannot show which
>portions of the brain are "in use".

Oops! You're quite right; I'm sorry. Positron emission tomography
allows the study of brain glucose metabolism in a regional fashion, which
is what I had in mind.

Thanks for pointing out my mistake.