Gray Matters

Gray Matters is a perk found in the data files of the Fallout 3 add-on Point Lookout. It does not appear in the game and can only be obtained with console commands.

Behind the scenes

 * The term "gray matter" is used for one of the two major components of the central nervous system (along with white matter).

Bugs
Although the description for this perk states that it will reduce head damage by 25%, the effect of the perk instead reduces head damage to 25%, or in other words, a 75% reduction in head damage.