Imagine the horror of learning that your brother is in a coma as the result of a car crash. Now imagine the relief when he emerges from that coma; a relief that is soon shattered by your brother’s ...

Capgras syndrome is a rare disorder in which a person holds the delusional belief that an identical-looking imposter has replaced someone significant in their life. They believe the doppelganger looks ...

We explore some of Wikipedia’s oddities in our 6,067,987-week series, Wiki Wormhole. This week’s entry: Capgras Delusion What it’s about: We’ve all heard of commonplace delusions—everyone’s out to get ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

Patients with a neurologic injury who develop the belief that known people are imposters (Capgras syndrome) or that strangers are actually loved ones in disguise (Fregoli syndrome) may have a single ...

This model linking delusions and beliefs differs from earlier accounts that suggested delusions were distinct from belief, or arise as a largely passive response to anomalous sensory input such as a ...

One January day in 2007, a terrifying idea seized a 45-year-old wife and mother in Omaha, Neb.: Her husband and teenage sons were not, in fact, her husband and teenage sons. Strangers who happened to ...

Delusional misidentification syndromes (DMS) encompass a group of striking disturbances in person recognition, most notably Capgras syndrome, in which a familiar individual is perceived as an impostor ...

According to standard diagnostic criteria, delusions are defined as “fixed beliefs” that a person forms on the basis of little or no evidence and are “not amenable to change” in the face of ...

Click to viewDelusions and neurological disorders have the ability to radically alter your perception of reality. But the effects of many of these disorders resemble the consequences of an alien ...