BCS 110 Lecture Notes - Lecture 10: Mechanotransduction, Missing Fundamental, Cochlea
1 Dec 2016
School
Department
Course
Professor
Document Summary
What is a natural sound? complex, complicated patterns of vibrations made up of harmonically-related sound waves pure sounds (perfect sine wave vibrations) exist only in laboratories and sound recording studios. Fournier analysis - mathematical process of breaking down a natural sound into its component sine waves similar process naturally performed by the auditory system in the basilar membrane. 4. ossicle vibration causes the oval window to vibrate oval window - membrane attached to the stapes that transfers vibrations from the ossicles to the fluid of the cochlea. 6. fluid in the cochlea is set in motion (movement of fluid is what we detect as sound) vibrations of fluid dissipate at the round window round window - elastic membrane in the cochlea wall. Tonotopic organization: contrast w/ retinotopic organization of the visual system. Exam 2 page 1 inner hair cells release transmitter onto axons of the auditory nerve hyperpolarization caused by less/no influx of potassium.
