Mechanical Wave Transmission in the Cochlea

Step 1

Oval window

step 2

pushes against perilymph in scala vestibuli

step 3

perilymph moves vestibular membrane

step 4

vestibular membrane moves endolymph in scala media

step 5

endolymph moves basilar membrane

step 6

basilar membrane moves perilymph in scala tympani

step 7

perilymph pushes against round window

Any nervous signal generated yet??

No.

When does the nervous signals happen?

When the Basilar membrane rebounds to push hair cells up against tectorial membrane.