Dr. Kertesz mentioned to me a case known to him of a farmer who had developed prosopagnosia and in consequence could no longer distinguish (the faces of) his cows, and of another such patient, an attendant in a Natural History Museum, who mistook his own reflection for the diorama of an ape
Oliver SacksThe miracle is that, in most cases, he succeeds - for the powers of survival, of the will to survive, and to survive as a unique inalienable individual, are absolutely, the strongest in our being: stronger than any impulses, stronger than disease.
Oliver SacksWith any hallucinations, if you can do functional brain imagery while theyre going on, you will find that the parts of the brain usually involved in seeing or hearing - in perception - have become super active by themselves. And this is an autonomous activity; this does not happen with imagination.
Oliver SacksIf a man with a dog sits quietly enjoying music and smiling, his dog might sit down beside him and smile, too. But who knows whether the dog is having a comparable experience or whether the dog is simply happy that his master is happy.
Oliver SacksEven when other powers have been lost and people may not even be able to understand language, they will nearly always recognize and respond to familiar tunes. And not only that. The tunes may carry them back and may give them memory of scenes and emotions otherwise unavailable for them.
Oliver Sacks