Abstract
EFFECTS similar to those reported by Pumphrey1 were demonstrated to us in December 1945 by Dr. Maass of Bremen2. According to Maass, bone-conducted vibrations up to 50 kc./s. (150 kc./s. or more in the young) can be heard by most people, including some subjects normally regarded as totally deaf at ordinary frequencies both to air-borne and to bone-conducted sound.
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References
Pumphrey, R. J., Nature, 166, 571 (1950).
Combridge, J. H., and Ackroyd, J. O., B.I.O.S. Final Report No. 606 (1946).
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COMBRIDGE, J., ACKROYD, J. Upper Limit of Frequency for Human Hearing. Nature 167, 438 (1951). https://doi.org/10.1038/167438c0
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DOI: https://doi.org/10.1038/167438c0
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