National Geographic : 1918 Jan
O Paul Thompson A CANDIDATE WIO IS RESPONDING NORMALLY TO TIHE FALLING TEST With his head forward and eyes closed, the candidate is placed in a spinning chair, which is revolved five times to the left in ten seconds. When the chair stops the candidate is told to raise his head and open his eyes. If he is normal his head will drop to the left, showing that the canals of the inner ear function properly. ©Paul Thompson THE "PAST POINTING" TEST TO DETERMINE ONE'S SENSE oF BALANCE AND DIRECTION The candidate, eyes closed, istrying totouch theexaminer's hand with his left forefinger after being whirled tentimes inten seconds. When the chair stopped, the candidate raised hisleft arm and with eyes tightly closed dropped hisarm and "past pointed" tothe right, away from the examiner's hand inasweeping arc.