yes, I know what you mean. It's like I cant concentrate enough to have a flow of words. I'll be talking and just stop mid-sentence and not have any idea how to say what I want to say (heck, half the time I don't remember what I wanted to say). I have been that way for a while but I agree that it gets worse when the depression is at its worst. I don't know the why but I know that it happens to me often.