Masking of electrical by acoustic stimuli: behavioral evidence for tonotopic organization

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Science  23 Dec 1977:
Vol. 198, Issue 4323, pp. 1276-1278
DOI: 10.1126/science.929201


When pure-tone acoustic masking stimuli of various frequencies were presented simultaneously with electrical stimuli applied to cochlear nucleus, only those maskers within a limited frequency range interfered with the detection of the electrical stimuli. The form of the masking functions obtained suggest that the electrical stimulus directly activated only a small population of neurons which were functioning in a tonotopic fashion.

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