[QUOTE=mswas]
What is more traumatic than a sudden diminishment of latency? Think about it? Every time you wanted to move, you had to wait another couple of milliseconds for your limbs to respond. Can you not imagine that it would be maddening after a life of lightning reflexes? One must give a lot of thought to what constitutes identity to make sense of it. If one’s identity is wrapped up in their reflexes, then losing that would be a big deal. Imagine if it suddenly took you twice as long to resolve problems that you tackle every day in your life? That means you can only accomplish half of what you previously were able to accomplish.
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It’s called getting old, my friend. My father and father-in-law are both in their '90s. My father in law is still pretty sharp - he is still composing and selling his music - but his latency is increased. Mine has also from when I was 20. I have a hard time considering this as a personality change, without a very fluid definition of personality.
Subset of the brain, remember. But if we can map personality changes due to experiences to changes in the physical brain, the match is still there.
Say your personality is a function P that st that
R = P(S)
where S is a set of stimuli and R is your responses to those stimuli. Now say in life you have experienced a subset Si of S, and respond with a subset of all possible responses Ri, a subset of R Now consider a new experience with stimuli Sj, where the intersection of Sj and Si is small. Does your new set of responses Rj constitute a personality change? I’d think that this would be represented instead by P’, a modified mapping function. The question is how big (P - P’) has to be before we call it a personality change.