From: John Cuccia 

On Wed, 15 Jun 2005 21:22:27 -0400, "Tony Ingenoso"
 wrote:

>A better question is that since the rat can exhibit behaviors far beyond PVS
>with such a small brain, why does the brain size issue mean anything at all?

In this case, where the brain was half it's normal weight, it implies severe atrophy.

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