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26 Cards in this Set
- Front
- Back
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What structures comprise the archicortical division of the limbic system?
Role? |
Archicortical:
Hippocampus, Cingulate Gyrus, Papez Circuit Modulates sensory processing, encoding of information, attentional control |
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What structures comprise the paleocortical division of the limbic system?
Role? |
Paleocortical division contains the amygdala and its connections to the basal forebrain and hypothalamus
Tags emotions to sensory stimuli, modulates fear/emotional responses and memories, integrates affect/drives, ESSENTIAL for emotional processing |
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What is cortical and hippocampal atrophy symptomatic of?
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AD
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Results of damage to the hippocampus?
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Damage hippocampus:
Impaired episodic memory (memory of autobiographical events) Disturbance of attention |
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Effects of lesion to anterior nucleus of thalamus?
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Confusion, memory loss (produces effects similar to that of hippocampal lesions)
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Function of cingulate gyrus?
Reason for lesioning cingulum bundles? |
Role: Emotional behavior
Lesion Cingulum Bundles to treat refractory pain/OCD (refractory = treatment resistent) |
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Significane of patient HM.
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b/l temporal lobectomy cured seizures, but was no longer able to form memories
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What does the stria terminalis connect?
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Amygdala to basal forebrain
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What does the ventral amygdalofugal pathway connect?
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Amygdala to hippocampus
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Effect of stimulating lateral hypothalamus?
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Aggression, voracity, hypersexual
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Effect of stimulating ventromedial nucleus?
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Placid, early satiety
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Why would a seizure in the amygdala result in auditory hallucinations and limb spasticity?
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Abnormal electrical activity in the amygdala can evolve to surrounding areas (cortex)
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What is a complex seizure? Cause?
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Electrical activity spreads to hippocampus and patient no longer remembers events of seizures (complex seizure); patient is unaware/unresponsive
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What does the fornix connect?
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Hippocampus to mammallary bodies
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What is the only primary sensory input to the amygdala?
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Olfaction
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