Age variation in the upper limit of hearing

@article{Takeda2004AgeVI,
  title={Age variation in the upper limit of hearing},
  author={Shintaro Takeda and Ikuharu Morioka and Kazuhisa Miyashita and Akeharu Okumura and Yoshiaki Yoshida and Kenji Matsumoto},
  journal={European Journal of Applied Physiology and Occupational Physiology},
  year={2004},
  volume={65},
  pages={403-408}
}
SummaryThe upper limit of hearing was measured in 6105 otologically normal ears of subjects ranging in age from 5 to 89 years. The results are as follows: in each age group from 5 to 59 years in both sexes, the upper limit of hearing showed an approximately normal distribution if a logarithmic scale was used for the upper limit of hearing axis. The mode of the distribution shifted to a lower frequency with increasing age. Over age 60 years, the distribution became much wider. Standard upper… 

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