The Man who mistook his wife for a hat

I happened to read the book by Oliver Sacks titled the same. Oliver sacks is a neurologist. He chronicles interesting cases in the form of stories. In the opening story "The Man who mistook...." he describes a musician and teacher who comes to him for complaints of decreasing vision and failing memory. When he is asked to describe a rose, he describes it as "About 6 inches in length. A convoluted red form with a linear green attachment". When he was shown a glove, he describes it as “ A continuous surface, enfolded on itself. It appears to have 5 outpouchings, if this is the word.” Finally, as he is about to go, he starts looking for his hat. He reaches out, takes hold of his wife’s head, and tries to lift it off, to put it on. He actually mistakes his wife’s head for his hat. The man suffers from a condition called prosopagnosia, or face-blindness, a neurological condition that renders a person incapable of recognizing faces or sometimes other objects. The book is really interesting with other such stories. Read it if you can !