I'm a lefty and I had considerable problems with speaking , memory. I'm sick from WDB exposure, right after that I couldn't carry on a conversation, I'd switch in the middle of saying something to a tottally different subject, there were times when somebody would ask me something and what came out of my mouth had nothing what so ever to do what the question, even still a re-exposure to a trigger can cause slured speach, and it can be very hard for me to find words to express myself, some chemical exposures would make me start studdering, and on a few occasions I basicly couldn't talk, I can set here in my quite space undistracted and and on good days do fairly well with thinking but I basicly get distracted very easily now and sometimes just by trying to talk I lose my thought. been a long hard road, got sick 2001, diagnosed CFS,FM,PTSD , IBS, MCS,chronic sinusitis/rhinosinusitis, highly allergic to molds, specific IgE and IgG to molds, affected my vision pretty bad too. memory loss,short term memory, delayed thought process going on, cant see to organize anymore and can not multitask anymore. and I may of left something out cause I usually do . being left handed I have wondered about how that influenced my brain with this.