This is why you can't tickle yourself: A new study found that the brain is much less active when you touch yourself, which is probably a good thing. People with schizophrenia, for example, are more successful at tickling themselves, suggesting an issue with discerning the "self" versus "others."

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This is why you can't tickle yourself: A new study found that the brain is much less active when you touch yourself, which is probably a good thing. People with schizophrenia, for example, are more successful at tickling themselves, suggesting an issue with discerning the "self" versus "others."