Auditory illusions and confusions.

For more than a century visu al illusions have been of particular interest to students of perception. AIthough they are in effect misjudgments of the l'eal world, they apparently reBect the operation of fundamental perceptual mechanisms, and they serve to isolate and clarify visual processes that are normally inaccessible to investigation. Auditory illusions, on the other hand, have received little scientific attention. Until