Lecture 13: Review Flashcards
1
Q
What happens if you lesion the left inferior frontal gyrus?
A
- Disconnection from the right motor region
- right hemiplegia
- Broca’s aphasia
- can’t carry out verbal commands with the intact left hand
-
sympathetic dyspraxia
- no comprehension deficits
2
Q
What happens if you lesion the left arcuate faciculus?
A
- Failure to carry out correct motor commands with either left or right limbs
- Section of the language “audio-motor” pathway
- Connects Audio to motor areas
- Also affect visual cortex so imitation would be affected
3
Q
What happens if you lesion the anterior CC?
A
- Disconnection of premotor regions
- can carry verbal commands with right hand but not with left
- write right but not left
- Left:
- aphasic writing
- Left:
- write right but not left
- Can imitate perfectly
- can carry verbal commands with right hand but not with left
4
Q
What happens if you lesion the temporo-parieto-occipital junction?
A
- Extensive lesions
- Semantic information
- ideational apraxia
5
Q
What is apperceptive agnosia?
A
- Problem with perception encoding
- Similar to blind
- Can’t
- integrate parts of an image into a whole
- copy images
- Can
- Appropriately reach or grab objects
- Lesions:
- bilateral infero-occipto-temporal lesion
6
Q
What is the difference between constructive apraxia and apperceptive agnosia?
A
-
Constructional apraxia
- Spatial relationship between objects in time (parietal)
-
Apperceptive agnosia
- Integration of the parts of an object into a whole (visual path)