Home / Health / There is a very rare disease that makes people’s faces “half loose”.

There is a very rare disease that makes people’s faces “half loose”.



A case study published in Current Biology describes a very rare medical condition in a patient who makes the faces of the beholder appear “half relaxed”. Despite the perfect sight, the described motif cannot see people’s faces without being visually distorted.

Known as Hemi-prosopometamorphopsia (Hemi-PMO) It is a medical history that has only been recorded 25 times and is caused by some form of brain damage. For the patient in this case study, simply called AD by the researchers, The condition was the result of an injury to the splenic region of the brain, the terminal portion of the corpus callosum, an area associated with vision.

This disorder has rarely been studied because it often subsides over time. To better understand the strange condition, the researchers showed the subject a series of images of faces and other objects in different planes, with different angles and different perspectives. The results showed that He could see inanimate objects properly, but the faces were almost always distorted despite turned and turned.

The faces were shown as “merged”

; in the regions you can see at the bottom of the messages. “”Whenever we see a face, the brain adjusts the representation of that face so that the size, angle of view and orientation match those stored in memory, just like the facial recognition systems used by Facebook and Google.“says study co-author Brad Duchaine, lead researcher at Dartmouth College’s Social Perception Lab.

Since this disorder often subsides over time, we can only wish AD a speedy recovery.




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