Big Brained

Big Brained is a special perk in the Fallout: New Vegas add-on Old World Blues.

Location
Convince your brain to return to your body or convince it to come back to the Sink while you deal with the Think Tank and after the completion of the add-on, you have or you can have your brain reinserted into your body. This perk replaces Brainless.

Effects
Your head cannot be crippled, you gain +10% Damage Threshold (minimum +1) and +10% resistance to chem addictions.

Bugs

 * The description listed on this perk pertaining to Damage Threshold shown in the game is incorrect. The perk will add a permanent bonus of +1 to your DT no matter what, and then multiply that value by 1.1, rounded.  For example, if your character has both ranks of Toughness, the Sub-Dermal Implant, Reinforced Spine, and this perk, it will lead to a naked DT of 14.  ((3[2]+4+2+1) * 1.1 = 14)
 * In addition to the bug mentioned above, you may never gain the rounded 10% if you are "naked" or wear body armor with 1-2 DT, any headwear is excluded. But if you're wearing body armor with 3 or more DT, you will actually lose the permanent +1 DT and only gain the 10%.