“That auditory acuity can be enhanced is claimed by W.J.M.A. Maloney (N.Y. Medical Journal, May 24, 1913). He cites Wittmack who in 1907 published experiments exposing groups of guinea pigs to one particular tone so as to produce auditory fatigue for that tone. On autopsy he found that prolonged over-stimulation had caused the cochlea nerve to degenerate. Among his conclusions are that many cases which are hurriedly classified as deaf, are only psychically deaf thru over-stimulation of their cochlear mechanism and that many of these cases can be relieved and their hearing recovered in some measure by suitable treatment.”