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Lecture 14

SPHR 2106 Lecture Notes - Lecture 14: Subthalamus, Epithalamus, Dysarthria


Department
Speech and Hearing Science
Course Code
SPHR 2106
Professor
Schulz
Lecture
14

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Thalamus
Two lobes Connected by massa intermedia
Three thalamic functions
Relay station
Channels sensitive information to specific cortical areas
Motor areas (basal ganglia and cerebellum) to premotor and motor cortices
Thalamic nuclei
Afferent to thalamus (inputs)
Efferents to thalamus (outputs)
Reticular nucleus:outside of thalamic nuclei
Nonspecific
Arousal and consciousness
Sensory relay nuclei
Somatosensory
From body and head and face
Visual
From eye
Auditory
From inferior colliculus (pathway from auditory nerve) to primary auditory
cortex ( superior temporal gyrus)
Limbic
From hypothalamus, amygdala (fear) to prefrontal executive areas
Medial geniculate nucleus
Input: sensory hearing
Output: primary auditory cortex
Lateral geniculate nucleus
Input: sensory optic
Output: primary visual cortex
Ventral posterior medial
Input: sensory head, face
Output: primary sensory cortex for face
Ventral posterior nucleus
Input: sensory body
Output: primary sensory cortex for neck, trunk and extremities
Ventral lateral nucleus
Input: cerebellum
Output: primary motor cortex
Ventral anterior nucleus
Input: basal ganglia
Output: premotor cortex
Dorsomedial nucleus
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