4. Auditory Pathways (Keim) Flashcards
What causes auditory agnosia?
Damage to lateral sulcus, yhe secondary auditory cortex in temporal lobe
What artery supplies the medial geniculate colliculus?
The thalamogeniculate arteries supply the medial geniculate colliculus.
Wernicke’s area is made of what three regions?
Superior Temporal Gyrus
Supramarginal Gyrus
Angular Gyrus
What regions make up Broca’s area?
Pars opicularis and pars triangularis of the inferior frontal gyrus.
What region is associated with classification of sounds?
Auditory association cortex
Where does auditory comprehension occur?
Wernicke’s area
What is the function of the lateral temporal cortex?
Semantic knowledge and word recognition (definitions).
What nuclei do the descending fibers from the cochlea enter as they pierce the pontomedullary juction?
The posterior division of the ventral cochlear nucleus.
AND
The dorsal cochlear nucleus.
What region of the brain is essential for the repitition of words?
The arcuate fibers
Where is the lesion in transcortical sensory aphasia?
In the watershed area between the MCA and PCA
What artery supplies the superior olivary complex?
The short circumferential branches of the basilar artery.
Where are the dorsal acoustic stria located?
In the pons.
What artery is often occluded in global aphasia?
Middle cerebral artery
What artery supplies the inferior colliculus?
The superior cerebellar A and quadrigeminal A supply the inferior colliculus.
What artery supplies the inner ear and cochlear nuclei?
The labyrinthine artery.
What artery supplies the auditory nuclei of the pons and medulla.
The basilar artery supplies the auditory nuclei of the pons and medulla.
What links Wernicke’s area and Broca’s area together?
Arcuate fibers
Where is the lesion in transcortical motor aphasia?
Watershed area between ACA and MCA.
Where is the location of the lesion in conduction aphasia?
The supramarginal gyrus and the arcuate fasciculus.
(part of Wernicke’s and the link to Broca’s, but not Broca’s.)
What are the functions of the analogues for Broca’s and Wernicke’s Areas?
Wernicke’s area: interpreting nonverbal signs from other people
Broca’s area: Instructions for producing non verbal communication.
What famous area is important in word retrieval?
Wernicke’s area
What nuclei do the ascending fibers from the cochlear nerve enter as they pierce the pontomedullary junction?
Anterior subdivision of the ventral cochlear nucleus
AND
Ventral cochlear nucleus.
What region is responsible for auditory discrimination?
The primary auditory cortex.
