Our mind is acutely programmed to recognize faces in an upright position, so much so that it has difficulty spotting abnormalities when looking at one that's upside-down. It's named "The Thatcher Effect" because it was first demonstrated using a photo of former UK prime minister Margaret Thatcher.
Do you recognize this famous person below? Moreover, can you see anything unusual in her face? Scroll down to see it turned right side up.
Scroll down to see her face right side up (this arrow added to make sure you don't peek :-)
This is singing superstar Adele, with some (now) pretty obvious strangeness added to her face.
Jacob Teitelbaum, M.D. is one of the world's leading integrative medical authorities on fibromyalgia and chronic fatigue. He is the lead author of eight research studies on their effective treatments, and has published numerous health & wellness books, including the bestseller on fibromyalgia From Fatigued to Fantastic! and The Fatigue and Fibromyalgia Solution. Dr. Teitelbaum is one of the most frequently quoted fibromyalgia experts in the world and appears often as a guest on news and talk shows nationwide including Good Morning America, The Dr. Oz Show, Oprah & Friends, CNN, and Fox News Health.