434243
Description
Mind Map by andreaarose, updated more than 1 year ago
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Created by andreaarose
over 10 years ago
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Parietal lobes
- Subdivisions
- Post central gyrus
- Brodmann's area 1, 2, 3
- Brodmann's area 1, 2, 3
- Superior parietal lobule
- Brodmann's area 5, 7
- Brodmann's area 5, 7
- Parietal operculum
- Brodmann's area 43
- Brodmann's area 43
- Inferior parietal lobule
- Supramarginal gyrus
- Brodmann's area 40
- Brodmann's area 40
- Angular gyrus
- Brodmann's area 39
- Brodmann's area 39
- Supramarginal gyrus
- Functional zones
- Anterior zone
- Somatosensory cortex
- 1, 2, 3, 43
- 1, 2, 3, 43
- Process somatic
sensations and perceptions
- Somatosensory cortex
- Posterior zone
- Posterior parietal cortex
- Remaining areas
- Remaining areas
- Integrate information from
vision with somatosensory
information for movement
- Posterior parietal cortex
- Anterior zone
- Post central gyrus
- A theory of parietal
lobe function
- Use of spatial information
- Object recognition
- Viewer centered object identification
- Posterior parietal cortex
- Viewer centered object identification
- Guidance of movement
- Sensitive to eye movements
- Posterior parietal cortex
- Sensitive to eye movements
- Cognitive spatial map
- Route knowledge,
unconscious knowledge of
how to reach a destination
- Route knowledge,
unconscious knowledge of
how to reach a destination
- Object recognition
- Three symptoms do not
fit with the visuomotor
view of the parietal lobe
- Difficulties with arithmetic
- Acalculia
- Might result from the
spatial properties of
addition and subtraction
- Two digit number
occupy different spaces
- "Borrowing" during
subtraction
- Two digit number
occupy different spaces
- Might result from the
spatial properties of
addition and subtraction
- Acalculia
- Difficulties with certain
aspects of language
- Words have spatial
organization
- Tap vs. pat
- Tap vs. pat
- Words have spatial
organization
- Difficulties with
movement sequences
- Individual elements of the
movement have a spatial
organization
- Individual elements of the
movement have a spatial
organization
- Difficulties with arithmetic
- Use of spatial information
- Somatosensory
symptoms of
parietal lobe lesions
- Lesions to the
post central gyrus
- Abnormally high
sensory thresholds
- Impaired position sense
- Deficits in stereogenesis,
also tactile perception
- Abnormally high
sensory thresholds
- Somatoperceptual
disorders
- Astereognosis
- Inability to recognize
an object by touch
- Inability to recognize
an object by touch
- Simultaneous extinction
- Two stimuli are applied
simultaneously to opposite
sides of the body
- A failure to report a
stimulus on one side is
referred to as extinction
- Two stimuli are applied
simultaneously to opposite
sides of the body
- Astereognosis
- Lesions to the
post central gyrus
- Symptoms of posterior
parietal lobe damage
- Contralateral neglect
- Neglect for visual, auditory
and somethetic stimulation on
one side of the body or space
- During recovery, patients go
through allesthesia and then
simultaneous extinction
- Allesthesia - begins to
respond to the neglected
stimuli as if they were on the
other side of the body
- Allesthesia - begins to
respond to the neglected
stimuli as if they were on the
other side of the body
- Lesion most often in the
right inferior parietal lobe
- Right intraparietal
sulcus and the right
angular gyrus
- Right intraparietal
sulcus and the right
angular gyrus
- Neglect for visual, auditory
and somethetic stimulation on
one side of the body or space
- Object recognition
- After right parietal lobe
lesions, patients are poor
at recognizing objects in
unfamiliar views
- After right parietal lobe
lesions, patients are poor
at recognizing objects in
unfamiliar views
- Apraxia
- Movement disorder in which the loss
of movement is not caused by
weakness, inability to move, abnormal
muscle tone, intellectual deterioration,
or other disorders of movement
- Ideomotor apraxia
- Cannot copy serial
movements
- More likely to be associated
with left parietal lesions
- More likely to be associated
with left parietal lesions
- Cannot copy serial
movements
- Constructional apraxia
- Cannot copy pictures, build
puzzles, or copy a series of
facial movements
- Associated with right
and left parietal lesions
- Associated with right
and left parietal lesions
- Cannot copy pictures, build
puzzles, or copy a series of
facial movements
- Movement disorder in which the loss
of movement is not caused by
weakness, inability to move, abnormal
muscle tone, intellectual deterioration,
or other disorders of movement
- Deficits in drawing
appear after damage to
the right parietal lobe
- Spatial attention
- Function of the parietal
lobe to selectively attend
to different stimuli
- Disengagement
- Shifting attention from
one stimulus to the next
- Shifting attention from
one stimulus to the next
- Disorders of spatial cognition
- Mental rotation requires:
- Mental imaging of the stimulus
- Manipulation of the image
- Mental imaging of the stimulus
- LH deficit may result
from the inability to
generate the image
- RH deficit may result
from the inability to
manipulate the image
- Mental rotation requires:
- Function of the parietal
lobe to selectively attend
to different stimuli
- Contralateral neglect
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