Comparison of the auditory acuity of man and monkey.

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Abstract
Binaural auditory stimulus thresholds were determined at 7 frequencies on 3 humans and 3 Macaca nemestrina monkeys using earphones. Comparisons of mean thresholds revealed that while the 2 audiograms were essentially similar in form, monkey''s acuity was inferior at all frequencies. These results failed to confirm earlier findings that monkey''s hearing was comparable to man''s at lower and intermediate frequencies and markedly superior at high frequencies. Discrepancies between present and previous findings are attributed largely to the criterion of tone detection used in the present study and to the different methods and reference values for the human hearing curve used in the various studies.

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