Cochlear-Microphonic and Summating Potentials and the Outputs of Individual Hair-Cell Generators

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Abstract
The effects of abandoning the assumption that the summating potential (SP) and cochlear micro-phonic (CM) recorded from the cochlea are produced by single groups of in-phase generators are examined. By postulating that the recording electrode averages the output of many out-of-phase generators, several of the apparently rather anomalous behaviors of the SP and CM may be explained. Included in this category is the behavior of the CM at high intensities. A semiquantitative argument is used to substantiate the claim that the mechanism of cancellation of out-of-phase components is adequate to account for those effects which have been attributed to the SP.

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