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PSYCH 2NF3 > Parietal Lobe > Flashcards

Parietal Lobe Flashcards

1
Q

Parietal lobe main functions

A

process and integrate somatosensory and visual information

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2
Q

Anatomical Borders of the parietal lobe

A

anterior: central fissure
ventral: sylvian fissure
dorsa: cingulate gyrus
posterior: parieto-occipital sulcus

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3
Q

what is the main sensory receptive area for touch

A

post central gyrus

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4
Q

where is the multimodal associative area that receives auditory, visual, and somatosensory input

A

inferior parietal lobe

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5
Q

inferior parietal lobe is involved in …

A
  • language processing an d processing
  • comprehension of speech and written language
  • reorienting or shifting attention
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6
Q

broadmanns regions: anterioir

A

1, 2, 3, 43

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7
Q

what side of the brain is more neurons

A

right

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8
Q

somatosensory cortex

A

the homunculus

parietal lobe

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9
Q

area PE main connections

A
  • somatosensory cortex
  • motor cortex
  • PF
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10
Q

area PE functions

A
  • somatosensory

- guiding movement by providing information about limb position

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11
Q

area PF main connections

A
  • somatosensory cortex
  • motor and premotor cortex
  • PG
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12
Q

area PF functions

A
  • part of mirror neuron system

- perspective taking in social interaction

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13
Q

area PG main connections

A
  • all of the above

- where there is more neurons in the right hemisphere

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14
Q

area PG functions

A
  • dorsal stream

- parieto-temporal-occipital crossroads

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15
Q

mirror neurons might be involved in what diagnosis

A

ASD

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16
Q

premotor areas

A

executing movements

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17
Q

prefrontal areas

A

memory

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18
Q

medial temporal areas

A

limbic system, spatially guided behvaiour

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19
Q

parieto-premotor pathway

A

where, how pathway

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20
Q

parieto-prefrontal pathway

A

working memory

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21
Q

parieto-medial temporal

A

spatial navigation

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22
Q

spatial object identification

A
  • parietal nad temporal lobe function

- being able to view objet at different angles and understand it is still the same object

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23
Q

damage to post central guidance

A
  • Afferent paresis: clumsy finger movements due to the lack of feedback about finger position
  • Deficits in stereognosis or tactile perception (tough perception), cannot identify stuff by touch alone
  • Abnormally high sensory thresholds: associated with touch alone
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24
Q

astereognosis

A

inability to recognize objects by touch

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25
simultaneous extinction
inability to perceive multiple stimulus of the same type at once sometimes seen as a disorder of attention
26
anosognosia
parietal lobe damage | unawareness or denial of illness
27
anosodiaphoria
parietal lobe damage | indifference to illness
28
asymbolia for pain
parietal lobe damage Absence of the normal reaction to pain (can be extremely sensitive or lack of sensitivity to pain, more common to lack sensitivity)
29
finger agnosia
parietal lobe damage | Unable to point to the fingers or show them to the examiner
30
Symptoms of posterior parietal lobe damage
- When object is still the patient is looking in the direction but cannot guide the arm towards the object, movement of the object helped - Could move eyes but was not able to fixate on a specific object - asomatognosia - optic ataxia
31
asomatognosia
post parietal lobe damage | identification of one object only when two or multiple are shown
32
optic ataxia
post parietal lobe damage | difficulty with reaching under visual guidance
33
allesthesia
post parietal lobe recovery begin to respond to the neglected stimuli as if they were on the other side of the body or space, and then
34
contralateral neglect
- Lesion most often in the right inferior parietal lobe - Right intraparietal sulcus and the right angular gyrus - Occasionally noted after lesions to the frontal lobe and cingulate cortex - Defective sensation or perception - Defective attention or orientation - attention deficit?
35
line bisection test
test for contralateral neglect
36
mooney closure faces test
test for visual perception
37
kimura box test
test for apraxia
38
apraxia
movement disorder loss of skilled movement cant copy body movements cant organize spatial movements
39
anterior parietal lobe makes what type of connections
straight forward connections
40
the dorsal stream is _____ pathway
where
41
anterior parietal zone
somatosensory
42
posterior parietal zone
spatial (reaching and grasping and whole-body movements)
43
sensorimotor transformation
neural calculations of our body movements
44
movement guidance
some cells more active when moving towards or even look at an object
45
object recognition
visuomotor control must be viewer centered | operates on a need to know basis
46
spatial navigation
believed to involve medial parietal region and part of the parieto-mediotemporal pathway
47
acalculia
inability to perform mathematical calculations
48
temporoparietal junction
where temporal and parietal lobes meet and Sylvian fissure end
49
language is ___-spatial
quasi-spatial
50
damage to posterior gyrus causes
increase in somatosensory thresholds
51
astereognosis
inability to recognize the nature of an object by touch
52
simultaneous extinction
when presented an individual stimulus all alone may miss it altogether
53
PE and PF known as
secondary somatic cortex
54
blind touch
lesion in PE, PF and some of PG | cant feel anything but can tell you where was touched
55
asomatognosia
loss of knowledge of sense of own body
56
Balints syndrome
could move eyes but not fixate simultagnosia optic ataxia bilateral parietal lesion
57
gestmann syndrome
unable to name or recognize fingers on either hand right left confusion agraphia a lesion in the left angular gyrus
58
apraxia
loss of skilled movement
59
ideomotor apraxia
inability to copy movements | LEFT posterior parietal lesions
60
constructional apraxia
disturbed spatial organization cannot assemble a simple puzzle can develop after right and left lesions
61
spatial abilities heavily on which side
right
62
tactile form recognition
lesion in PG

PSYCH 2NF3 (13 decks)

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