NEUR3112 Lecture Notes - Lecture 23: Fourier Transform, Basilar Membrane, Square Wave
Document Summary
The central nervous system in the auditory process. The basilar membrane is effectively a frequency spectrum analyser it performs a fourier transform of the sound wave. Different ends are sensitive to different frequencies of sound. Sound is rarely just 1 sin wave -> it is usually comprised of a series of sin waves. Basilar membrane detects these frequencies together to get a more complex sound. For sin wave, only activate low frequency area, when with square wave, we also activate some high frequency area. To hear the difference between sine and square wave, high frequency needed -> Implications for high frequency hearing loss -> the differences would be less clear, lost acuity. About 30 000 different fibres in the actual basilar membrane. Very, very fast processing and passing of information into the auditory nerve. Each afferent nerve fibre contacts an inner hair cell from a specific region of the cochlear.
