Why Can't I Tickle Myself?

I think that tickling requires a certain amount of surprise, and because tickling one’s self has no unexpected motion on the skin, there is no tickle response. A recent study by Blakemore and colleagues has investigated how the brain distinguishes between sensations we create for ourselves and sensations others create for us. They suggest that when a person tries to tickle him- or herself, the cerrebellum sends to the somatosensory cortex the exact information on the place of the tickling target and therefore what sensation to expect.

I guess to summarize, if you know exactly where you are going to be touched (if you try to tickle yourself) then the element of surprise disappears and you do not react in the same way as if you were tickled by someone else. I hope that makes sense. :)

I also believe - note i am not an expert - that it has al to do with the brain responses. When you tickle yourself the brain is aware that your are tickling yourself at a certain place and can surpress the signal knowing the source. When someone else tickles you the brain has no reason to surpress as it is a external signal.

im not sure. i can tickle myself and lmao. so i dont know.