PSYCH 3A03 Lecture Notes - Afferent Nerve Fiber, Cochlear Duct, Tuning Fork
5 Nov 2013
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Document Summary
Primary afferent neuron making direct contact to the basilar portion of the outer hair cell. Stereocilia are located on scala media surface of basilar membrane. Hair cells found in the organ of corti. Outer haircells (ohc) on lateral side of tunnel of corti; ~150. Inner haircells (ihc) on medial side of tunnel of corti; ~40 stereocilia/ihc stereocilia/ohc. Vibrations of the fluid sends the basilar and tectorial membrane in motion causing the stereocilia to vibrate. Helicotrema (apex where scala vestibular folds over and become scala tympani) Oscious spiral lamina widest towards the vestibular end of the inner ear and tends to become smaller as we approach the apex. Basilar membrane becomes wider as we approach the apex. Studied math, chemistry and physics at university; phd in physics (1923) Became interested in hearing while working on telephone lines at hungarian post office. Interested in mechanics; made many of his own research tools; built a model cochlea.
