Neuroanatomy - Auditory and Visual Pathways Flashcards
where are the organs of hearing and balance located?
in the inner ear
what nerve facilitates hearing?
CN VIII (cochlear)
where do the nerve fibres for the cochlear nerve starts and where do they travel to?
the primary auditory cortex in the superior temporal gyrus
pass down to the cochlear nucleus
what nuclei are important in sound localisation?
olivary nucleus
nucleus of the lateral leminiscus
where do fibres carrying information about low frequency sounds go in the auditory cortex?
the anterolateral part
where do fibres carrying information about high frequency sounds go in the auditory cortex?
posteromedial part
what is aphasia?
the inability to use language
what two areas can be damaged resulting in aphasia?
broca’s area
wernicke’s area
how does broca’s aphasia present?
difficulty producing language, using a few words and only saying the most important words
dont usually struggle to understand language
what are other names for broca’s aphasia?
motor aphasia
expressive aphasia
how does wernicke’s aphasia present?
difficulty comprehending language
what are other names for wernicke’s aphasia?
sensory aphasia
receptive aphasia
what nerve mediates balance?
CN VIII (vestibular nerve)
how are objects projected onto the retina and why?
reversed and upside down
because of the shape of the lens
where is information from the lower visual field projected to in the brain?
the gyrus superior to the calcarine sulcus
