This from Swiss researchers, so you know it’s accurate:
Stimulating a certain area of the brain can produce a creepy feeling that someone is watching you when no one is, scientists said Wednesday.
Swiss researchers made the discovery while evaluating a young woman for surgery to treat epilepsy. They believe their finding could help explain feelings such as paranoia which afflict patients suffering from schizophrenia.
When they electrically stimulated the left temporoparietal junction in her brain, which is linked to self-other distinction and self-processing, she thought someone was standing behind her.
If they repeated the stimulus while she leaned forward and grabbed her knees she had an unpleasant sensation that the shadowy figure was embracing her.
“Our findings may be a step toward understanding the mechanisms behind psychiatric manifestations such as paranoia, persecution and alien control,” said Olaf Blanke, of the Ecole Polytechnique Federale de Lausanne, in the journal Nature.
The left side of the brain. Hmmmmmmmm. We can only hope that someday appropriate medication will help.
Added link to original article.