11. The basilar membrane within the cochlea contains the first of these specializations for echo information processing. 12. The fine tuning of the basilar membrane is created by the input of two separate mechanisms. 13. When the basilar membrane moves downward, the hair bundles are driven in the inhibitory direction. 14. The mechanical force that is generated by these mechanisms increases the movement of the basilar membrane . 15. Amplification to these sounds is therefore required, in order for the basilar membrane to respond efficiently. 16. Neural signals responding to motions of the basilar membrane show responses in one direction as in rectification. 17. The basilar membrane and the hair cells of the cochlea function as a sharply tuned frequency analyzer. 18. This then compresses the scala vestibule into the basilar membrane in the direction toward the scala tympani. 19. The basilar membrane separates the cochlear duct from the scala tympani, a cavity within the cochlear labyrinth. 20. It is thought that each ERB is the equivalent of around 0.9mm on the basilar membrane .
