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17 Cards in this Set
- Front
- Back
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are their more cells or synapses in the skull?
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many many many more synapses
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Explain how shearing works?
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The underlying white matter is much more dense and therefore moves at a different speed then the lighter gray matter when experiencing trauma
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What are the 6 cell layers of the cerebral cortex grey matter?
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1-molecular layer
2-external granular layer 3-External pyramidal layer 4-internal granular layer 5-internal pyramidal layer 6-multiform layer |
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What is a fusiform?
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spindle shaped outputs cells projecting to the thalamus
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What is a stellate?
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smaller interneurons which remain in the cortex
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What are the 5 functional categories of cerebral cytoarchitecture?
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Primary Sensory Cortex-different intensities and qualities of sensory info
Sensory Association- more complex sensory Motor Planning- organize movement Primary motor- descending control of movement Association- controls behavior, interpret sensation; emotion; memories |
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Where are the 3 association areas?
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Prefrontal(self awarness,planning), Parietotemporal(sensory integration,spatial relations, language), limbic(emotion, memory)
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What are some neurological defects from frontal lobe pathology?
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seizures
Mental changes Depression or euphoria, denial Inappropriate lang/behavior Nonfluent aphasia Confabulation(false memories) Anosmia- (can't smell) |
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What are 2 test used to dianose frontal lobe damage?
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Trailmaking test(A1-B2-C3-D4)
Wisconsin card sorting |
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What are some neurological defects from chiasmal pathology?
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headaches
Amenorrhoea(loss of period) EOM palsy Decreased Consciousness Loss of libido secondary hypothyroidism |
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What are some neurological defects from the temporal lobe?
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Auditory/Visual hallucinations
Epilepsy Deja Vu and Jamais Vu Confusion Automatic behavior Fluent Aphasia Directed Agression Bilateral Tinnitus(perception of sound) |
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There are 2 major processing streams, what are they?
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Ventral/temporal ("what is it") Parvo stream
Dorsal/Parietal ("where is it") Magno stream |
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What are some neurological defects from parietal lobe pathology?
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Disabilities often subtle and rationalized
Attentional defects Corporal Agnosia(unawareness of body, maybe can't get dressed) Anosognosia for hemiplegia(one side of body may not work well but they will ignore it) Seizures w/ sensory focus |
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What are some neruological defects from dominant parietal lobe pathology?
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Difficulties in visual cognitive function
Alexia(can't put letters together to form words) Agraphia(can't write- if angular gyrus involved) Receptive Aphasia(can hear what is being said but can't understand) |
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What is prosopagnosia?
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inability to recognize faces
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What are some neurological defects from the nondominant parietal lobe lesion?
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Synthesizes spatial information into formed precepts
Topographical agnosia Apraxia(inability to carry out learned movements) Spatial agnosia(agnosia-lose of ability to recognize object) Dressing apraxia unformed or semiformed visual hallucinations |
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What are some neurological defects from occipital lobe pathology?
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Usually neurologically silent
Epileptic attacks Mild mental abnormalities Loss VA in both eyes Retention of pupillary defects Antons syndrome(blind but denies it) |
