AHS is often caused by brain injury or neurodegenerative illnesses, but there is not enough research to determine any consistent cause or why it occurs. “Alien hand is little investigated because it ...

There are medical conditions, such as diabetes, hypertension, or asthma, that almost all of us will have heard of. But what about those that are so rare that very few of us will know about? In this ...

What happens when you think and how you act don't align? We tell the story of a woman diagnosed with what's known as "alien hand syndrome." NPR's Invisibilia, the show about human behavior, has ...

What would happen if your brain was split in two? In this recent Invisibilia podcast and show, host Hanna Rosin meets a woman named Karen with "alien hand syndrome." After surgery to treat her ...

The belief that one is dead, an uncontrollable “alien” hand: these conditions wouldn’t sound out of place in a horror movie. So you may be surprised to learn that they are just two of the thousands of ...

Since the 1960s, researchers have been scrutinizing a handful of patients who underwent a radical kind of brain surgery. The cohort has been a boon to neuroscience — but soon it will be gone. In the ...