“At some point in their lives, about 5 percent of people hear voices or see things that others cannot perceive.”

John McGrath / the Queensland Brain Institute:

We used to think that only people with psychosis heard voices or had delusions, but now we know that otherwise healthy, high-functioning people also report these experiences. Of those who have these experiences, a third only have them once and another third only have two-to-five episodes across their life. These people seem to function reasonably well. So it’s incredibly interesting that not only is hearing voices more common than previously thought, but it’s not always linked to serious mental illness.

Hallucinations are surprisingly common [Futurify]