parietal lobe Flashcards
this part of the parietal lobe processes somatic sensation and perception
anterior parietal lobe
this part of the lobe integrates visual/somatosensory information (mvmnt)
posterior parietal lobe
this part of the p lobe does object rotation, mental imagery and navigation
posterior parietal lobe
posterior parietal lobe is involved in which visual stream
dorsal
this area does somatosensory input and guides movement based on limb location
area PE
Area PE gives output to…
primary and secondary MC and area PF
this area receive input form area PE, MC, PMC
Area PF
this area establishes movement goals and gets fb to restructure movement
Area PF
area PG is polymodal T/F
True
this area forms complex connections in visual, skin, proprioceptive and vestibular, oculomotor and cingulate
Area PG
this area is larger in the RH
Area PG
Area PG communicates with what visual stream
Dorsal
what is responsible for non-conscious visuospatial reaching and grabbing movements
dorsal visual stream
tis dorsal pathway does movement goals and is considered the how stream
parieto-premotor pathway
this dorsal pathway does visuospatial function (working memory)
parietal-prefrotal pathway
this dorsal pathway does spatial navigation and remembers where things are
Parieto-medial temporal pathway
the posterior parietal lobe is more movement oriented than the anterior part
true
a patient with high sensory thresholds who presents stereogenisis deficits may have a lesion where
postcentral gyrus
postcentral gyrus lesion patients may present its what symptom in their limbs
clumsy finger movement due to lack of feedback
unawareness or denial of sickness
anosognosia
indifference to illness
anosodiaphoria
absence of normal reaction to pain
asymbolia
inability to localize or name a body part
autopagnosia
loose sense of ones own body typically the left side
asomatognsia
Apraxia is typically caused by damage to ____ resulting in loss of skilled movement
parietoprefrontal cortex
a subject presents and can button his shirt but is unable to reach and grab a glass infant of him
optic apraxia
this person struggles with spatial organization, and when making a sandwich might put the bread in the middle
constructional apraxia
person is unable to feel a poke but could report where it was
numb touch /blind touch
numb touch effects which areas of the parietal cortex
PE/PF and some PG
two stimuli are presented this person neglects to feel one of them
stimulus extinction
stimulus extinction is cased by damage to which areas of the parietal lobe
PE and PF
inability to recognize an object by touch
astereognosis
lesions to this area of the brain cause contralateral neglect
RH –> right intraparietal sulcus and area PG
this person doesn’t respond to visual, auditory, or somesthetic input of the LEFT side of their body
contralateral neglect
two deficits that may cause neglect
- defective sensation/perception
2. defective attention/orientation
if someone have neglect due to sensation/perception defects where might their brain damage be
lesion to PG in the RH
if someone have neglect due to attention/orientation defects where might their brain damage be
frontal lobe
patient presents and is unable to fixate on visual stimulus and gazes sightly to the right this person may have ___ with damage to ____
Balints syndrome, bilateral parietal lesion
patient can only attend to one object at a time and fails to see others while attending to the one
stimulagnosia