PSYC 4365 Lecture Notes - Lecture 25: Medial Geniculate Nucleus, Afferent Nerve Fiber, Axon
Document Summary
Basic structure of the mammalian auditory system: coding of amplitude and frequency in the cochlea. Place code: tuning of different parts of the cochlea to different frequencies, in which information about the particular frequency of an incoming sound wave is coded by the place along the cochlear partition with the greatest mechanical displacement. Figure 9. 12 the cochlea is like an acoustic prism in that its sensitivity spreads across different sound frequencies along its length (part 1) Figure 9. 12 the cochlea is like an acoustic prism in that its sensitivity spreads across different sound frequencies along its length (part 2) Inner hair cells: convey almost all information about sound waves to the brain (using afferent fibers) Outer hair cells: convey information from the brain (using efferent fibers). They are involved in an elaborate feedback system: the auditory nerve (an) Responses of individual an fibers to different frequencies are related to their place along the cochlear partition.
