NSCI426 Lecture Notes - Lecture 15: Cochlear Nucleus, Habenula, Circadian Rhythm

• School: University of Delaware
• Department: Neuroscience
• Course: NSCI426
• Professor: McCaughey

Document Summary

Cumulative: mostly new material (sensory systems) + old material (glial cells, etc. ) Canvas quiz: circled area-loss of pain for the ipsilateral face; comes in through trigeminal nerve; pain for face goes into spinal cord (dorsal spinal horn) Trigeminal nerve (touch for the face)-nucleus in the pons (goes to thalamus on opposite side) Review: cortex-precentral gyri, central sulcus, postcentral gyri, lateral fissure, anterior/precentral gyrus-motor, planning, primary motor cortex, etc, posterior/postcentral gyrus-sensory, spatial placement, map of world/body, etc, connections between sensory and motor to understand environment. Ion channels-salty and sour: nst thalamus insular cortex, somatosensation, pain & temperature-spinothalamic (anterolateral); 2nd order neurons that can be traced back to the skin. Inner ear-fluid filled, vestibular, cochlea (auditory: cochlea uncoiled -sounds result in piston-like action of stapes against oval window. Induced fluid motion-results in mechanical wave propagating: central projections: cn viii, cochlear nuclei in medulla (processing and projections to both sides of the brain) inferior nucleus medial geniculate of nucleus auditory cortex.