Underwater Hearing Thresholds
نویسندگان
چکیده
منابع مشابه
Reliability of underwater hearing thresholds in pinnipeds
Repeated measures of low-frequency underwater hearing sensitivity in individuals of three pinniped species tested over 4–7 years are presented. Despite changes in the experience of the subjects and certain testing parameters (e.g., equipment and research personnel), measured underwater hearing thresholds within subjects over relatively long periods of time were quite similar at the frequencies ...
متن کاملUnderwater Hearing in Man
Six men were subjected to 3500 Hertz pure tones of 1250 millisecond pulse length repeated every 2. 5 seconds for a period of 15 minutes at Sound Pressure Levels of 168 and 178 decibels re .0002 dynes per square centimeter. Temporary Threshold Shifts were measured and compared to temporary threshold shifts induced by similar exposures at lower levels in air in a second group of five men. It was ...
متن کاملUnderwater Hearing in Man : Ii
Six men were subjected to 3500 Hertz pure tones of 1250 millisecond pulse length repeated every 2. 5 seconds for a period of 15 minutes at Sound Pressure Levels of 168 and 178 decibels re .0002 dynes per square centimeter. Temporary Threshold Shifts were measured and compared to temporary threshold shifts induced by similar exposures at lower levels in air in a second group of five men. It was ...
متن کاملBiophysics of underwater hearing in anuran amphibians.
A standing wave tube apparatus was used to determine the biophysical basis of underwater hearing sensitivity in 3 species of Rana and in Xenopus laevis. A speaker inside the base of a vertical, water-filled 3 m steel pipe produced standing waves. Pressure and particle motion were measured with a hydrophone and geophone respectively and were spatially 90 degrees out of phase along the length of ...
متن کاملModelling hearing thresholds in the elderly.
This paper concerns a linear mixed-effects repeated measures model in the analysis of a large data set with over 17,000 observations in a longitudinal study of pure-tone hearing perception in the elderly. The repeated measurements are described by fixed and random components in the model. The fixed effects include the age at entry, time of follow-up, a quadratic component in natural logarithm o...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1956
ISSN: 0001-4966
DOI: 10.1121/1.1905086