25 JULY 2019 Flashcards
primary visual fx is to
distinguish between the intensity of light shapes:
- light/ dark
- size/shape
- location
light shapes have three different types of things:
- light /dark
- size/shape
- location
primary auditory fx is
conscious discrimination of sound
define characteristics
when you have dsfx in the primary auditory cortex
your ears project bilaterally
(wouldn’t be one-sided deafness)
-loss of locational of sounds (360* fx)
primary visual dx:
1/2 visual disappears
contralateral = R side dx
if both sides of the primary visual area dx:
then you get cortical blindness can grossly react to object in the visual field
perception is the
recognition of sensation
agnosia:
inability to recognize objects when using a specific sense even through discrete ability is intact
the vestibular part of the picture is the
the dotted line in the temporal
- comes to consciousness right next to auditory sport
fx of the vestibular spot
head position
head movement
contributes to a perception of the vertical
dsfx of the vestibular part
pusher’s syndrome
can’t feel the pull of the gravity in one side
agnosia comes from what cortex?
the secondary one
primary overall does:
distinguishing senses
secondary overall does:
giving meaning to senses
ventral visual stream
gives meaning to what we see
is a sliver in the temporal lobe
when the dorsal stream is dx you get
optic ataxia:
cant reach toward the object you see (w/precision)
primary motor cortex fx:
voluntary controlled movements plan and execute movements
dsfx of the primary motor cortex fx:
paresis loss of fine motor control
spastic dynamic
corticospinal is where / what is it
precentral gyrus = UMN
cell bodies in the brain end in the spinal cord
corticospinal then has what degree of control?
the high degree of voluntary control
secondary auditory fx is
the classification of sounds
dsfx of the secondary auditory is
auditory agnosia:
- separation of speech hands off to Wernicke’s to be decoded
- if not speech assigns meaning
secondary somatosensory cortex fx is
stereognosis memory of a tactile spatial environment
dsfx of secondary somatosensory cortex is
astereognosis
premotor area fx:
control of trunk: girdle Mm
anticipatory: loss of balance
- feedforward
dsfx of the premotor area:
apraxia: a breakdown between concept and performance
def of apraxia:
a breakdown between concept and performance
loss of ability to carry out familiar purposeful movements