I can estimate animals' frequency range by looking at their basilar membrane through a microscope.
What does BM stand for?
BM stands for Basilar Membrane
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Samples in periodicals archive:
The basilar membrane has different thickness and width along its length which induce frequency dependent location of maximum amplitude of vibration on the basilar membrane.
High frequency tones excite the basilar membrane on its basal end and low frequency tones excite the basilar membrane on its apical end.
A mechanism of transformation and decomposition of signals is based on special mechanical behaviour of the basilar membrane at what sense cells are located.
Recent studies have determined the relationship between the progression of characteristic frequencies along the basilar membrane [9] and the comparable frequency versus position map of neurons in the spiral ganglion [10-11].
[5] It has been proposed that these bubbles disturb the propagation of the traveling wave of the basilar membrane.
The scientists suggest that the contractile proteins within these unusual cells pull on external fibers that are attached to the long, spiraling inner-ear structure called the basilar membrane.
In term of signal decomposition the most important part of the ear is cochlea where basilar membrane with a sense cells is located.