I also get that memory loss...a lot!! (Had a severe concussion, hit my head, and ER Dr said I possibly had 2 seizures)
Just the other day, I paid a co-pay, the receptionist handed me a large receipt (talking printer paper size) I had it in my hand then a minute later asked her for a receipt, had no memory of her handing it to me.
This kind of thing happens all the time, very short term memory loss....have to write notes everywhere.
I also have lapse of time, it feels as though I suddenly wake up, I can walk a block and look back and have no memory of it, don't remember going in to the loss of time, just on the other end.
ER Dr thought I was having absence seizures.