Free-field audiogram of the Japanese macaque (Macaca fuscata)

J Acoust Soc Am. 1999 Nov;106(5):3017-23. doi: 10.1121/1.428121.


The audiograms of three Japanese macaques and seven humans were determined in a free-field environment using loudspeakers. The monkeys and humans were tested using tones ranging from 8 Hz to 40 kHz and 4 Hz to 22.4 kHz, respectively. At a level of 60 dB sound pressure level the monkeys were able to hear tones extending from 28 Hz to 37 kHz with their best sensitivity of 1 dB occurring at 4 kHz. The human 60-dB hearing range extended from 31 Hz to 17.6 kHz with a best sensitivity of -10 dB at 2 and 4 kHz. These results indicate that the Japanese macaque has low-frequency hearing equal to that of humans and better than that indicated by previous audiograms obtained using headphones.

Publication types

  • Comparative Study
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Acoustics
  • Animals
  • Audiometry
  • Echolocation / physiology*
  • Hearing / physiology*
  • Humans
  • Macaca
  • Male
  • Psychophysics
  • Speech Perception / physiology*