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PSYCH 2NF3 > Parietal Lobe > Flashcards

Parietal Lobe Flashcards

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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
Q

simultaneous extinction

A

inability to perceive multiple stimulus of the same type at once
sometimes seen as a disorder of attention

26
Q

anosognosia

A

parietal lobe damage

unawareness or denial of illness

27
Q

anosodiaphoria

A

parietal lobe damage

indifference to illness

28
Q

asymbolia for pain

A

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
Q

finger agnosia

A

parietal lobe damage

Unable to point to the fingers or show them to the examiner

30
Q

Symptoms of posterior parietal lobe damage

A
  • 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
Q

asomatognosia

A

post parietal lobe damage

identification of one object only when two or multiple are shown

32
Q

optic ataxia

A

post parietal lobe damage

difficulty with reaching under visual guidance

33
Q

allesthesia

A

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
Q

contralateral neglect

A
  • 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
Q

line bisection test

A

test for contralateral neglect

36
Q

mooney closure faces test

A

test for visual perception

37
Q

kimura box test

A

test for apraxia

38
Q

apraxia

A

movement disorder
loss of skilled movement
cant copy body movements
cant organize spatial movements

39
Q

anterior parietal lobe makes what type of connections

A

straight forward connections

40
Q

the dorsal stream is _____ pathway

A

where

41
Q

anterior parietal zone

A

somatosensory

42
Q

posterior parietal zone

A

spatial (reaching and grasping and whole-body movements)

43
Q

sensorimotor transformation

A

neural calculations of our body movements

44
Q

movement guidance

A

some cells more active when moving towards or even look at an object

45
Q

object recognition

A

visuomotor control must be viewer centered

operates on a need to know basis

46
Q

spatial navigation

A

believed to involve medial parietal region and part of the parieto-mediotemporal pathway

47
Q

acalculia

A

inability to perform mathematical calculations

48
Q

temporoparietal junction

A

where temporal and parietal lobes meet and Sylvian fissure end

49
Q

language is ___-spatial

A

quasi-spatial

50
Q

damage to posterior gyrus causes

A

increase in somatosensory thresholds

51
Q

astereognosis

A

inability to recognize the nature of an object by touch

52
Q

simultaneous extinction

A

when presented an individual stimulus all alone may miss it altogether

53
Q

PE and PF known as

A

secondary somatic cortex

54
Q

blind touch

A

lesion in PE, PF and some of PG

cant feel anything but can tell you where was touched

55
Q

asomatognosia

A

loss of knowledge of sense of own body

56
Q

Balints syndrome

A

could move eyes but not fixate
simultagnosia
optic ataxia
bilateral parietal lesion

57
Q

gestmann syndrome

A

unable to name or recognize fingers on either hand
right left confusion
agraphia
a lesion in the left angular gyrus

58
Q

apraxia

A

loss of skilled movement

59
Q

ideomotor apraxia

A

inability to copy movements

LEFT posterior parietal lesions

60
Q

constructional apraxia

A

disturbed spatial organization
cannot assemble a simple puzzle
can develop after right and left lesions

61
Q

spatial abilities heavily on which side

A

right

62
Q

tactile form recognition

A

lesion in PG

PSYCH 2NF3 (13 decks)

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