Say there were nanobots in your brain that could reset the age of your neurons. This naturally wipes all of that neuron’s memory.

If the nanobots reset all of your neurons at the same time, you would go unconscious and lose all your memory. You basically die and the new you isn’t You.

But, what if the nanobots slowly reset your neurons? Say it resets one, and then gives it time to make new memories. Perhaps it could make the same memory as it once had? Then after 1,000 years all of your neurons have been reset at least once.

Are you the same person? You were conscious the whole time. You still have all of your memories and personality.
Your thoughts?