One thing it effects is long term memory. I had left temporal lobe damage at age 25 and cannot remember much of my life before that.
I also have temporal lobe epilepsy (left temporal lobe) without medication I have extreme highs and lows, I see black things flying and crawling on the walls, rugs turn into snakes, my sense of smell is hightened. Now with medication I need to eat and sleep well, plus no stress or I have very slight symptoms like the above...