Week 10 Content Flashcards
Parietal Association Cortex (what)
- Multi/heteromodal cortex
- Integrates visual, somatosensory, vestibular, and auditory inputs
What side is the dominant hemisphere
Left
What side is the non-dominant hemisphere
Right
How are primary and association areas represented
- Bilaterally
- Some asymmetries in functional specialization
Skilled motor formulation (praxis)
- Controlled by dominant/left hemisphere
- Formulates complex/skilled movements
- Prominent when interacting with objects/environment
Visual-spatial analysis and spatial attention
- Controlled by non-dominant/right hemisphere
- Controls how we attend to things in our environment
Apraxia
Damage to motor association areas OR parietal association cortex of the dominant/left hemisphere
Causes the inability to perform complex sequences of movement
Hemi-spatial Neglect
Damage to non-dominant/right parietal association cortex OR frontal cortex
Causes the inability to attend to sensory information and/or motor function on the contralateral side
Type of hemi-neglect
- Sensory
- Motor-intentional
- Combination of sensory and motor
- Conceptual
Double simultaneous stimulation tests (what)
- Tests to determine hemi-neglect
- Do something to one side then the other
- Then do the thing to both sides at the same time
Conceptual neglect (what)
Patient loses the ability to attend to internal representation of the external world
- Mental imagery impacted by hemi-neglect
What is anosognosia
No awareness of hemi-neglect
Hemiasomatognosia
- Limbs disowned
- Patients deny that one half of their body belongs to them
What is different about dressing apraxia
- Caused by lesions of the right parietal cortex
- Differs as all other apraxias are due to left parietal cortex lesions
Alien hand (what and how)
- Left hand is out of control and seems to act on its own
- Caused by damage to corpus collosum and/or supplementary motor area of the non-dominant/right hemisphere
