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Fig. 7. Bamboo shark audiogram plotted in terms of (A) acceleration, (B) velocity
and (C) displacement. These results support the proposal that the macula
neglecta is a velocity detector, as there is a substantially flat response in
terms of particle velocity irrespective of the change in frequency (B). For a
velocity sensitive organ, if the thresholds are plotted in terms of
acceleration (A) there is an increase in threshold with increase in frequency
(approximately 6 dB per octave) and a decrease in threshold with increase in
frequency when expressed in terms of particle displacement (C).
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