Cortical lesions {3] Flashcards
Frontal lobe fxn
- Comportment (behavior)
- Executive fxn
- Language fluency (Left)
- Motor prosody (emotional sounds)
- Motivation
Temporal lobe fxn
SMLE
Sensory prosody
Memory
Emotion
Language comprehension
Parietal lobe
Tactile sensation
Visuospatial Fxn
(school stuff)
- attention (R hemis)
- reading
- writing
- calculations
Occipital lobe fxn
vision
visual perception
visual recognition
Leading cause of disability in US
Stroke
Broca’s area Lesion (brodman __) and lesion on R analogous side
BA 45
L hemis: aphagia
R hemis:
Motor aprosody
(inability to add emotion to speech)
3 major frontal lobe syndromes
1. disinhibition (orbitofrontal lesion) 2. Executive dysfxn (dorsolateral prefrontal) 3. Apathy (medial frontal lesions)
Hemineglect: usually due to
R hemis parietal lobe lesion
Occipitotemporal vs Occipitoparietal
- what, where
- dorsal or ventral
Occipitotemporal - ventral
-“what”
Occipitoparietal
- Dorsal
- “where”
Visual agnosia
(failure to attach meaning to visual input)
Tell me where lesion occurs
- Object agnosia:
- Face agnosia/prosopagnosia
- Simultanagnosia
- Object agnosia:
L occipitotemporal - Face agnosia/prosopagnosia
R occipitotemp - Simultanagnosia
both R and L
Perseveration seen in which lesions?
Frontal lobe lesions
- gets stuck and cant get unstuck (continuation or recurrance of act, w/o appropriate stim)
Hemineglect
neglect for sensory stimuli contralateral to side of cerebral lesion