Figure 7: The vibratory pattern has a single mode that is centred upon the BM.
From: Hair cell force generation does not amplify or tune vibrations within the chicken basilar papilla

(a–c) Representative vibratory magnitudes across the basilar papilla 75% from the base to 200, 500 and 800 Hz, 60 dB SPL stimuli. The magnitude is plotted in pseudocolour with the maximum vibration given in the upper right corner of each image. The largest vibration magnitudes occurred at the SHC/BM region, but the FcP and the THC/TM region also demonstrated vibration. (d–f) Vibratory phases to the same stimuli in the same chicken plotted in pseudocolour. There was little variation across the sensory epithelium, indicating a single vibratory mode was present. (g) Quantification of the magnitude demonstrated differences between the three different regions. (h) There was no phase variation between the three regions. Error bars show the s.e.m.