PSYCH261 Chapter Notes - Chapter 6: Temporal Lobe, Tinnitus, Auditory Cortex
Document Summary
Amplitude: intensity of a sound: sounds of greater amplitude sound louder, but exceptions exist. Frequency: number of compressions per second, measured in hertz: pitch is the related aspect of perception, sounds higher in frequency are higher in pitch. The outer ear includes the pinna, the familiar structure of flesh and cartilage attached to each side of the head: the pinna helps us locate the source of a sound. In the middle ear, after sound waves pass through the auditory canal, they strike the tympanic membrane or eardrum: the tympanic membrane vibrates at the same frequency as the sound waves that strike it. It connects to three tiny bones that transmit the vibrations to the oval window which is a membrane of the inner ear. The inner ear contains a snail-shaped structure called the cochlea: cochlea contains three long fluid-filled tunnels: the scala vestibule, scala media, and scala tympani.