Tonotopic representation

Question 1

Different parts of what respond to different sound frequencies?

Answer 1

Basilar membrane

Question 2

Specific parts of what project to specific parts of the what, which projects to specific parts of what, to what, to what?

Answer 2

Specific parts of the basilar membrane project to specific parts of the brain stem nuclei which project to specific parts of the inferior colliculus, to specific parts of the medial geniculate, to specific parts of the primary auditory cortex