ASTRO-110 Lecture Notes - Lecture 20: Posterior Parietal Cortex, Cochlear Implant, Cochlear Nucleus
22 Sep 2020
School
Department
Course
Professor
Document Summary
Vestibular system carries information about the direction and intensity of head movements which helps maintain balance. Axons of each auditory nerve synapse in cochlear nuclei from which many projections lead to the superior olives on both sides of the brain stem at the same time. Axons of olivary neurons project via lateral lemniscus to the inferior colliculi where they synapse on neurons that project to the medical geniculate nuclei of the thalamus which in turn project to the primary auditory cortex. Location of sounds is mediated by the lateral and medial superior olives louder there time of arrival of signals from the two ears. When a sound originates to someone"s left, it reaches the left ear first and is. Some neurons in the medial superior olives respond to slight differences in the. Some neurons in lateral superior olives respond to slight differences in the amplitude of sounds from the two ears.
