language centres Flashcards
what does the angular gyrus process
text and numbers into a form we can speak
which hemisphere is dominant for language in most people
left
what is wernicke’s aphasia
issue with speech comprehension
describe the visual image pathway
Image → retinogeniculate pathway via thalamus → via optic radiations to the visual cortex → area 19 (interprets) → sent via splenium of corpus callosum to dominant hemisphere → angular gyrus (into phoneme) → wernicke’s area in temporal lobe (comprehension) → broca’s area via arcuate fasciculus (production of speech) → primary motor cortex
that auditory signal will continue on via the MGN of the thalamus to the primary auditory cortex (area 41) via auditory radiations.
Signals are then transmitted to _________ in the auditory association area.
Wernicke’s area
what joins the Wernicke’s and Broca’s area
arcuate fasciculus
what is dysarthria
label for group of speech disorders caysed by impaired control of the muscles responsible for speech
what is broca’s aphasia (motor aphasia)
issues with speech production
what is the function of wernicke’s area
permits recognition of spoken and written langauge and creates plan of speech
what is the dorsal auditory pathway responsible for
is responsible for the quality of the sound e.g. it will detect differences between the words ‘bet’ and ‘bat’.
what is the function of broca’s area
generates motor program for larynx, tongue, cheek and lip muscles to create movement for phonation and trasmits that to primary motor cortex
what is Associative aphasia
the connection between wernicke’s and broca’s area is damaged
what is auditory agnosia
inability to differentiate or recognise sounds
what is a clinical perspective for Wernicke’s area
sensory aphasia
what is the ventral auditory pathway responsible for
concerned with the direction of sound and timed differences.
