Tip: Healthy Mind: Monitor Your Sense of Self Awareness by Checking Your Body Ownership & Self-Agency or the capability to initiate your own action

How to know if one is mentally healthy. One way is to do this test: "Rubber Hand Illusion” or RHI. This tactile illusion, which was discovered in 1998, is induced by simultaneously stroking a visible rubber hand and the subject’s hidden hand. “After a while, patients with schizophrenia begin to ‘feel’ the rubber hand and disown their own hand. They also experience their real hand as closer to the rubber hand,” says Sohee Park, associate professor of psychology at Vanderbilt University, who conducted the study with doctoral candidate Katharine Thakkar and research analysts Heathman Nichols and Lindsey McIntosh. While Healthy people get this illusion too, but weakly. Some don’t get it at all, and there is a wide range of individual differences in how people experience this illusion that is related to a personality trait called schizotypy associated with psychosis-proneness.”

Futurity.org – Mind-body reconnect in schizophrenia: "The experiment, reported in the journal PLoS One, measured the strength of body ownership of 24 schizophrenia patients and 21 matched control subjects
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