PSYC 211 Lecture Notes - Lecture 7: Tonotopy, White Matter, Lateral Lemniscus
10 Nov 2015
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Document Summary
The vibrations of air molecules, set to vibration by objects that vibrate. It is the changes in air pressure that move the eardrum in and out: measurements: Approximately 700miles/hr, and is measured in hertz. Receptor cells in our ear can vibrate between 30hz 20,000hz: physical dimensions: Loudness the amplitude or intensity of vibrations. These vibrations are re-amplified by the body, performed by the 3 ossicles, knocking on the membrane behind the oval window: inside the cochlea are the auditory receptor cells, and it is fluid-filled, of total, unrolled length 3. 5cm. Pressure along different positions in the cochlea produce differing sounds. Vibrations push fluid through the top of the cochlea to the round window membrane. Scala tympani: the ear"s connection to the brain: The organ of corti sends auditory information via the cochlear nerve. These axons then enter the superior olivary complex, useful for source localization.
