Originally posted by Juntai
I don't think so. Where is this stated? Bane is considered a mental peer to Bruce and Ras al Ghul on many occasions. Even during his venom days.
Note he would plan, *then* he'd use the venom during the fight itself. It doesn't affect his mind while he's not using it.
It was covered in the original venom storyline (where Batman started to use it, but went through hard withdraw because he wasn't thinking enough), and it's why Bane tries to avoid venom if there's any choice nowadays.