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What are the 3 regions of the Association Cortex?
- Parietal-temporal-occipital area
- Orbitofrontal Area
- Limbic Area
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What structures allow communication between the two hemispheres?
- Corpus callosum
- Anterior Commisure
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What structure is responsible for control of interhemispheric communication?
Corpus callosum
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Describe the path of epileptic seizures
- Start in one hemisphere
- Cross the corpus callosum, at which point consciousness is lost
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What are the 6 major lateralized functions and their dominant hemispheres?
- Handedness - left hemisphere dominant for language
- Mathematics - left hemisphere
- Music - right (chords/melodies), left (tempo, rhythm)
- Spatial relationships - right hemisphere
- Emotion - right hemisphere
- Language - left hemisphere
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What are aphasias?
- Defects in language
- Often a result of a left hemisphere lesion
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What are the major regions involved in language/speech?
- Planum temporale
- Wernicke's Area
- Broca's Area
- Superior Longitudinal Fasciculus
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Wernicke's Area:
1. Function?
2. Lesion result?
- 1. Speech comprehension
- 2. Sensory aphasia aka Wernicke's Aphasia
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Broca's Area:
1. Function?
2. Lesion result?
- 1. Speech production
- 2. Motor Aphasia (dominant side), monotonic speech (non-dominant side)
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Superior Longitudinal Fasciculus:
1. Function
2. Lesion result?
- 1. Interconnects Wernicke's and Broca's Areas
- 2. Condunction Aphasia (cannot repeat phrases or words)
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What is Astereognosis and where is the associated lesion?
- Inability to recognize an object by touching it
- Parietal lobe lesion
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What is Contralateral Neglet and where is the associated lesion?
- Unaware of the left (contralateral) space
- Lesion in right parietal cortex
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What are the responsibilites of the Prefrontal Cortex?
- Concentration
- Abstract resoning
- Capacity to understand delayed rewards
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What procedure is utilized for terminally ill patients in great pain?
Prefrontal Lobotomies
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What are the signs of schizophrenia?
- Delusions
- Hallucinations
- Disordered thinking/language
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