Parietal Lobe

Question 1

what are the sensory information processing areas in the cortex

Answer 1

Primary somatosensory area (BA 1,3,2)

• Secondary somatosensory area (BA 5,7)
• Parietotemporal association area (BA 39,40)

Question 2

What does the primary somatosensory area do

Answer 2

-Discriminates shape, texture or size of objects

Question 3

What does the secondary somatosensory area do

Answer 3

-stereognosis (ability to know with eyes shut what is in hand–> stores memory about tactile sensation) and memory of the tactile and spatial environment

Question 4

What does the parietotemporal association area do

Answer 4

-sensory integration and spatial relations, understanding language

Question 5

What are some types of perceptual dysfunction

Answer 5

• Agnosias
• Spatial disorders
• unilatereal neglect
• apraxias
• aphasias

Question 6

What lesion causes agnosis

Answer 6

Lesions of secondary cortical areas

Question 7

What is agnosis

Answer 7

inability to recognise or make sense of incoming sensory information

Question 8

What are different types of agnosia

Answer 8

• Tactile agnosia (stereognosis)
• Visual Object agnosia (inability to differentiate b/w visual objects)
• Auditory agnosia (can’t differentiate sound)
• Alexia/dyslexia (trouble understanding written language)
• Colour agnosia (can’t tell b/w colour

Question 9

What is a consequence of lesions of tertiary cortical areas

Answer 9

Agnosias

Question 10

What are different types of agnosia

Answer 10

Anosognosia
Asomatognosia
Autotopagnosia
Prosopagnosia

Question 11

What is anosognosia

Answer 11

failure to perceive illness, a defect or that denial of a defect

Question 12

What is anosodiaphoria

Answer 12

indifference to or lack of concern about illness (mild form of anosognosia)

Question 13

What is asomatognosia

Answer 13

lack of recognition of body

Question 14

What is somatoparaphrenia

Answer 14

Elaborate delusions of who the body part might belong to

-form of asomatognosia

Question 15

What is prosopagnosia

Answer 15

inability to recognise familiar faces including ones own face

Question 16

What are visuospatial abilities

Answer 16

abilities related to understanding and conceptualizing visual representation and spatial relationships in learning and performing a task

Question 17

What is the dominant parietal lobe for spatial analysis

Answer 17

right parietal lobe

Question 18

What does spatial perception include

Answer 18

depth perception
direction perception
distance perception
motion perception

Question 19

What does visual perception include

Answer 19

size
shape
form discrimination

Question 20

What is topographical disprientation

Answer 20

inability to orientate in the environment

Question 21

What is unilateral neglect

Answer 21

usually occurs following a lesion to right parietal cortex=left neglect

• an attention disorder
• pts fail to report, respond or orient to meaningful stimuli presented on affected side

Question 22

what is motor apraxia

Answer 22

Motor apraxia is an impairment of
the capacity to perform purposeful
movement not due to any primary
motor or sensory deficit or because
of a lack of comprehension,
attention or willingness to perform
the movement

Question 23

what is ideomotor apraxia

Answer 23

impaired ability to
perform a skilled gesture with a limb upon verbal
command and/or by imitation

Question 24

What is ideational apraxia

Answer 24

disturbance of voluntary
movement in which pt misuses objects
because they have difficulty identifying the
concept or purpose behind objects

Question 25

What is constructional apraxia

Answer 25

when there is evidence of poor drawing and

constructional capabilities

Question 26

What is dressing apraxia

Answer 26

Dressing apraxia is an inability to orientate
clothing to the body in terms of order and
laterality

Question 27

What is receptive aphasia

Answer 27

inability to
understand spoken or
written language

Question 28

What is expressive aphasia

Answer 28

inability to express
oneself using spoken
or written language

Question 29

What is global aphasia

Answer 29

is an inability to use language in
any form (producing, comprehending and writing/reading language)