Effect of Endolymphatic Hydrops on Sound Transmission in Live Guinea Pigs Measured with a Laser Doppler Vibrometer

Figure 5

Peak-to-peak displacement-frequency curve of the umbo (a–c), stapes head (d–f), and round window membrane (RWM) (g–i) in response to 85 dB SPL sound stimuli at the ear canal. (a) Six individuals and their mean value in the control group (dotted line for the individuals and solid line for the mean value). (b) Six individuals and their mean value in the endolymphatic hydrops (EH) group (dotted line for the individuals and solid line for the mean value). (c) Mean ± SD () of the control and EH groups, respectively: dotted line for the control group and solid line for the EH group. (d) Six individuals and their mean value in the control group (dotted line for the individuals and solid line for the mean value). (e) Six individuals and their mean value in the endolymphatic hydrops (EH) group (dotted line for the individuals and solid line for the mean value). (f) Mean ± SD () of the control and EH groups (dotted line for the control group and solid line for the EH group). (g) Six individuals and their mean value in the control group (dotted line for the individuals and solid line for the mean value). (h) Six individuals and their mean value in the endolymphatic hydrops (EH) group (dotted line for the individuals and solid line for the mean value). (i) Mean ± SD () of the control and EH groups (dotted line for the control group and solid line for the EH group).

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