Auditory and Visual Pathways Flashcards
which cranial nerve carries out hearing?
CNVIII
what nuclei does the cochlea nerve travel to?
cochlear nuclei
what does the superior olivary nucleus do?
sense arrival times at both ears
what does the lateral lemniscus do?
relay sound to the colliculus in midbrain and synapses in the thalamus
where is the primary auditory cortex located?
superior temporal lobe in the lateral fissure
describe the organisation of the auditory cortex
tonotopic organisation
- low frequency end in anterolateral part of auditory cortex
- high frequency end in posteromedial part of auditory cortex
what is aphasia?
inability to use language
two causes of aphasia?
damage to Broca’s area
damage to wernicke’s area
presentation of damage to Broca’s area
patients have difficulty producing language but can comprehend
presentation of damage to Wernicke’s area
difficult comprehending so say meaningless words
connections of the vestibular nuclei
thalamus CNIII CNIV CNVI spinal cord
where is the lower visual field projected?
gyrus superior to calcarine sulcus
where does the macula project in the visual cortex?
posterior pole of the visual cortex and occupies a greater portion of the cortex compared to its size
