posted on Mar, 11 2009 @ 09:20 PM
Interesting studies of people who've had partial or complete hemispherectomies - physical loss of part or all of one of the cerebral hemispheres. In
a number of cases they pretty much are able to function normally after some relearning, physiotherapy, etc.
Information and abilities are cross-referred throughout the brain. Those old maps where one area controls smell, another digestive functions, etc -
are all simplistic.
An interesting function of the brain, not always realized, is to filter out information and constantly do editing so we can focus on a reasonable
amount of information and sensory stimuli. If we had to bring into play everything we've read, seen, heard, all at once our systems would crash
through the overload.
We keep only a tiny percentage of experience and knowledge is active memory. Maybe the so-called unused 90% is sort of backup storage where we can go
to retrieve data and programs required for special circumstances.
Most people who study brain functions after years have a similar conclusion. The more you learn about the brain the more mysterious it seems.