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Lecture 2

SPHR 2106 Lecture Notes - Lecture 2: Midbrain, Auditory Cortex, Occipital Lobe


Department
Speech and Hearing Science
Course Code
SPHR 2106
Professor
Schulz
Lecture
2

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Muscle terms
Voluntary Control: skeletal (striated)
Ex: arms, legs.
Involuntary control: cardiac muscle/ smooth
Ex: cardiac muscle controlled by brain stem
Smooth ( esophagus by peristaltic)
Gyrus/convolution: folds in brain
sulcus/fissure: indentations
Sylvian fissure/ lateral sulcus:
Central sulcus/Rolandic fissure: Superior part of brain to lateral fissure
Commissure: a set of fibers that connect the two halves of the brain
Cortex: outer layer that contains gray matter(cell bodies)
White matter: axons (transmission cables)
Ganglia: a cluster of gray matter that is located beneath the cortex
Corpus callosum: bundle of fibers : callosum/commissural fibers: connects (LEFT TO RIGHT)
hemisphere
Fibers that go north and south
Diasate: cross midline
Projection fibers:
Fibers that to around primary motor cortex to spinal cord: north south transmission
cables(NORTH TO SOUTH)
Motor side: sensory transmission cables: left side of body to the primary sensory cortex(
SOUTH TO NORTH)
Connections within hemispheres: association fibers
Somite: cell body
Visceral: esophagus, colon
Prefix:
Ipsi: same
Contra: opposite
Motor control is contralateral for the body
Left hemisphere control right side of body
Control of face is BILATERAL
Cerebellum: has two hemispheres: ipsilateral in motor control
Primary motor cortex: precentral
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