Mirror touch

"Challenging our understanding of what it means to be human, Joel Salinas, a Harvard-trained researcher and neurologist at Massachusetts General, shares his experiences with mirror-touch synesthesia, a rare and only recently identified neurological trait that causes him to feel the emotional and physical experiences of other people. Performing a spinal tap, he feels the needle slowly enter his lower back. If a disoriented patient flies into a confused rage, Salinas slips into a similarly agitated physical state, and when a patient dies, he experiences an involuntary ruin--his body starts to…