The discovery of the Wever and Bray phenomenon in 1930 provided the stimulus for a great amount of experimental work in the field of audition. The discovery that electrical potentials can be picked up from the cochlea, auditory nerve and auditory tracts from which sounds entering the animal's ear can be reproduced furnished a promising method for the investigation of auditory function in the animal.
At the same time other investigators have continued making observations, using various types of conditioned reflexes as tests of hearing.
Still other investigators have studied the reflex contractions of the muscles of the middle ear in response to sound and have shown that these contractions may be used as an indicator of hearing. Observations of the reflex of the stapedius muscle in man have permitted the correlation between the reflex and the sensation of hearing.
Various observations have been made with the aforementioned types of
KOBRAK HG, LINDSAY JR, PERLMAN HB, DUBNER H. EFFECT OF LIMITED COCHLEAR LESIONS ON COCHLEAR POTENTIALS AND MIDDLE EAR MUSCLE REFLEXES. Arch Otolaryngol. 1938;27(1):59–66. doi:10.1001/archotol.1938.00650030066004
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