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Science 16 September 1983:
Vol. 221. no. 4616, pp. 1206 - 1208
DOI: 10.1126/science.6612337
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Articles

Science, Vol 221, Issue 4616, 1206-1208
Copyright © 1983 by American Association for the Advancement of Science

articles

Auditory intensity discrimination at high frequencies in the presence of noise

NF Viemeister

Over a wide range of intensities, subjects were able to detect small differences in the intensity of a high-frequency band of noise that was presented with a relatively intense, complementary band-reject noise. This indicates that neither of two possible mechanisms for peripheral intensity coding, those based on timing and on spread of excitation, is necessary for the large dynamic range of human hearing. It is shown that the information available in the firing rate of a small number of nerve fibers can account for these data.


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