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To me, decreasing elasticity means more tension. The membrane should get more stiff!
View attachment 206281
To me, decreasing elasticity means more tension. The membrane should get more stiff!
Therefore, if you decrease elasticity along the length of the membrane, it'll shift the hair cells' sensitivities to favor those in the low frequency range where the basilar membrane is the most elastic.
To be frank, it's a stupid question if it's discrete. I'm assuming it's passage-based? And if you don't mind me asking, where'd you find this question?
If we decrease elasticity along the length of the membrane, I keep thinking that the whole membrane gets more stiff -> favoring the higher frequency range like the basal end. Is my logic off?
Yes exactly. That's the logic I used for getting the correct answer. The answer explanation in the OP hints at that: "favoring low frequency"20 kHz basal end (high freq detection and stiff) ---------------------------------------------- 20 Hz apical end (low freq detection and loose)
If we decrease the elasticity of the membrane, the whole thing gets more stiff. Are you thinking about this to mean that the super-stiff basal end doesn't work as well, favoring the apical end?