For the first time in my life, I have been so busy that I have actually developed a sort of short-term memory loss co-mingled with a loss of time perception for brief moments.
Ex. Riding on the train to and from law school, I will often be so "in my head" that when I come out of it, I either (1) think that a great amount of time has passed, and that I may have missed my stop, only to realize only a minute or so has passed, or (2) I will think that only a minute has passed and infact, 7 or so minutes have passed.
The short-term memory loss comes into play when I am attempting to keep a clear train of thought. I am easily pushed "off the track" and then it takes me a second to remember what I was saying.