caa a22 4500 469054727 CHVBK 20180323132840.0 cr unu---uuuuu 170328e19921101xx s 000 0 eng 10.1007/BF00243505 doi (NATIONALLICENCE)springer-10.1007/BF00243505 Age variation in the upper limit of hearing [Elektronische Daten] [Shintaro Takeda, Ikuharu Morioka, Kazuhisa Miyashita, Akeharu Okumura, Yoshiaki Yoshida, Kenji Matsumoto] Summary: The 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 limit age curves were established by calculating 10th, 25th, 50th, 75th and 90th percentiles for each age group. From early childhood where no age variation was recognized in conventional audiometry, deterioration of the upper limit of hearing was already in progress. This deterioration was slight between ages 25 and 39 but at ages over 40 it was accelerated and led to so-called presbycousis. The upper limit of hearing was found to be one of the best parameters for showing the quantitative age-related changes in hearing. Springer-Verlag, 1992 Upper limit of hearing nationallicence Ageing nationallicence Auditory acuity nationallicence Takeda Shintaro Department of Hygiene, Wakayama Medical College, 27 Kyubancho, 640, Wakayama, Japan aut Morioka Ikuharu Department of Hygiene, Wakayama Medical College, 27 Kyubancho, 640, Wakayama, Japan aut Miyashita Kazuhisa Department of Hygiene, Wakayama Medical College, 27 Kyubancho, 640, Wakayama, Japan aut Okumura Akeharu Department of Hygiene, Wakayama Medical College, 27 Kyubancho, 640, Wakayama, Japan aut Yoshida Yoshiaki Department of Hygiene, Wakayama Medical College, 27 Kyubancho, 640, Wakayama, Japan aut Matsumoto Kenji Department of Hygiene, Wakayama Medical College, 27 Kyubancho, 640, Wakayama, Japan aut European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 65/5(1992-11-01), 403-408 0301-5548 65:5<403 1992 65 421 https://doi.org/10.1007/BF00243505 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00243505 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Takeda Shintaro Department of Hygiene, Wakayama Medical College, 27 Kyubancho, 640, Wakayama, Japan aut NATIONALLICENCE 700 1- Morioka Ikuharu Department of Hygiene, Wakayama Medical College, 27 Kyubancho, 640, Wakayama, Japan aut NATIONALLICENCE 700 1- Miyashita Kazuhisa Department of Hygiene, Wakayama Medical College, 27 Kyubancho, 640, Wakayama, Japan aut NATIONALLICENCE 700 1- Okumura Akeharu Department of Hygiene, Wakayama Medical College, 27 Kyubancho, 640, Wakayama, Japan aut NATIONALLICENCE 700 1- Yoshida Yoshiaki Department of Hygiene, Wakayama Medical College, 27 Kyubancho, 640, Wakayama, Japan aut NATIONALLICENCE 700 1- Matsumoto Kenji Department of Hygiene, Wakayama Medical College, 27 Kyubancho, 640, Wakayama, Japan aut NATIONALLICENCE 773 0- European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 65/5(1992-11-01), 403-408 0301-5548 65:5<403 1992 65 421 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer