Class 11 - Sensory disorders

Question 1

What can lesions to the postcentral gyrus cause?

Answer 1

High sensory thresholds, impaired position sense, astereognosis, afferent paresis

Question 2

What is afferent paresis?

Answer 2

Clumsy finger movements because of lack of feedback about finger position

Question 3

What is astereognosis?

Answer 3

Inability to recognize an object by touch

Question 4

What is simultaneous extinction?

Answer 4

Failure to report a stimulus when two are delivered simuteneously on opposite sides of the body

Question 5

What is blind touch?

Answer 5

Cannot feel stimuli but can report the location

Question 6

What is asomatognosia?

Answer 6

Loss of knowledge or sense of one’s own bodily condition

Question 7

What is anosognosia?

Answer 7

Unawareness or denial of illness

Question 8

What is anosodiaphoria?

Answer 8

Indifference to illness

Question 9

What is autopagnosia?

Answer 9

Inability to localize or name body parts

Question 10

What is asymbolia?

Answer 10

Absence of normal pain reactions

Question 11

What are the three deficits in Balint’s syndrome?

Answer 11

Oculomotor apraxia, simultagnosia, optic ataxia

Question 12

What is contralateral neglect?

Answer 12

Neglect for visual, auditory and somesthetic stimulation on one side of the body or space

Question 13

What are the two phases of recovery for contralateral neglect?

Answer 13

Allesthesia: respond to neglected stimuli as if they were on the other side of body or space
Simultaneous extinction

Question 14

Where is the lesion in contralateral neglect?

Answer 14

Right inferior parietal lobe (right intraparietal sulcus and right angular gyrus). Can also be a lesion in frontal lobe (goal-directed behavior) and cingulate cortex (loss of motivation)

Question 15

Where is the lesion in object recognition problems when patients are poor at recognizing unfamiliar views?

Answer 15

Right parietal lobe

Question 16

What are the 4 symptoms of Gerstmann syndrome?

Answer 16

1. Left-right confusion
2. Finger agnosia
3. Acalculia
4. Agraphia

Question 17

Where is the lesion in Gerstmann syndrome?

Answer 17

Left angular gyrus. Maybe some supramarginal (although mostly language)

Question 18

What are 3 left parietal symptoms?

Answer 18

Disturbed language function, apraxia, right hemianopia (from optic radiations)

Question 19

What is limb-kinetic apraxia?

Answer 19

Cannot make fine, precise movements (esp. fingers)

Question 20

What is ideomotor apraxia?

Answer 20

Inability to plan or complete motor actions. Can explain how to perform the action though. Can do it automatically though

Question 21

What is ideational/conceptual apraxia?

Answer 21

Inability to conceptualize a task and impaired ability to complete multistep actions

Question 22

What are side are the parietal apraxia’s usually associated with?

Answer 22

Left parietal lesions, or even callosal lesions

Question 23

What are ways to assess for apraxia?

Answer 23

Gesture to command, gesture to imitation, pantomine (see tool), actual tool use, serial motor acts

Question 24

What is constructional apraxia?

Answer 24

Cannot copy pictures, build puzzles. Constructing something. Left hemisphere = details only, right hemisphere = global only

Question 25

What is disengagement?

Answer 25

Shifting attention from one stimulus to the next

Question 26

What hemisphere has the lesion when: you are unable to generate an image, unable to manipulate an image

Answer 26

Left and right hemisphere, respectively

Question 27

What test can be used to test for somatosensory threshold?

Answer 27

Two-point discrimination

Question 28

How can you test contralateral neglect?

Answer 28

Line bisection

Question 29

How do you test apraxia?

Answer 29

Kimura

Question 30

How can you test tactile form recognition?

Answer 30

Seguin-Goddard Form Board

Question 31

How can you test visual perception?

Answer 31

Gollin incomplete figures, Mooney closure