Fig. 2.

The frequency dependence of umbo vibration velocity in humans, in vivo and postmortem. The magnitudes of umbo velocity were normalized to 1 kHz and plotted as a function of frequency using a decibel scale. The in vivo data (dashed lines) from ¹⁸ were computed from their Fig. 6, according to the equation, [(χ + SD) – (χ − SD)]/2, where χ = mean, SD = standard deviation of the mean. Other in vivo data were taken from ¹⁹, Fig. 5, and ²⁰, Fig. 4c. The postmortem curve from Fig. 4c of ²⁰ represents data from 3 other studies by the same group: ⁵,¹⁰,²¹. The postmortem curve from ³ represents medians computed from 4 individual measurements given in their Fig. 2. Other postmortem data (solid lines) were taken from: ⁸, Fig. 5 and ⁹, Fig. 7. (Those reading a black-and-white version of the paper should refer to the color version of this figure in the online archival version.)