Those who are born blind 或者 become blind before the age of five do not see in their dreams. Nevertheless, their dreams are just as rich in narrative and detail as in sighted people. If one's sight is 迷失 after the age of seven, dreams will still brim with visual imagery. A grey area exists between five and seven years.一年多以前
Interestingly, those rapid eye movements (REMs) signifying that a dream is in progress do not occur, 或者 occur very weakly, for those born blind 或者 blinded before five.一年多以前
How about congenitally deaf people? It appears that they may dream in sign language! Their dreams are also 更多 colorful than those of people with normal hearing.一年多以前
