Frownupsidedown,
I know exactly what you mean. Unfortunately, I have had many ECT treatments and I have experienced the same type of memory loss. It is terrible. I have huge chuncks of time that I cannot remember including my time in law school, my kids birth and growing up, vacations and more. I also have a very bad to non existent short term memory. My pdoc also says the depression may have done this, but I truly doubt it. Had I known what ECT could do, I would never have undergone the treatment even though I would probably be dead now because what I have now is not really living. Feel free to pm me if you wish. I am so sorry you are going through this too.