So goes the title of a Nature article from September 2006.

The experimenters report electrical stimulation of a 22 year old woman with epilepsy, in the left temporo-parietal junction of the brain,  which is said be to responsible for sensory integration, self-processing, self-other distinction etc.  The subject is said to have reported the perception of an illusory shadow person immediately behind her with similar features and posture. They say, this illusory perception of a distinct person in spite of  an awareness of the similarity, is like that of deluded schizophrenic patients.

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