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31 Cards in this Set
- Front
- Back
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the functions of the limbic system include
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Homeostasis, Olfaction, Memory, Emotion (HOME)
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what is the path of the papez circut
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hippocampus (fornix) mamillary (MMT) thalamus (internal capsule) cingulate (cingulum) entorhinal cortex (perforant) hippocamus (Horney Fellows make multiple trips into crass cervices expecting pleasurable happenings)
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What are the common features of limbic structures that suggested they function as a system
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1. herpes tropism 2. cholinergic and opiate receptor density 3. seizure foci
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what is the function of the cingulate cortex
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anterior-emotions and motor, posterior=visual spatial and memory
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what is the function of the orbital frontal lobe
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personality, behavior control, self awarness
(hint: if you lesion the OF you become an Ornery F**k like Phineus Gage) |
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what is the function of the temporal lobe in relation to the limbic components (hippocampus, parahippacampus, entorhinal cortex)
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memory
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what is the function of the amygdala
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preservation of self-emotion, social, agression, defense, sexual, affective signficance of visual stimuli, affect of faces, affective regulation
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what is the function of the septum
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preservation of species-sexual behavior, emotinoality
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what does the fornix connect
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the fornix connects the hippocampus with the septum and mamillary bodies
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what does the stria terminalis connect
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the stria terminalis connects the amygdala with the septum and hypothalamus
(hint: terminated= past tense, HAS happend Hypothalamus, amygdala, septal) |
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what does the ventral amygdalofugal pathway connect
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connects the amygdala wit hthe hypothalamus, brainstem, and septum
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what does the medial forebrain bundle connect
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amygadala, hypothalamus, brainstem, septum
(pretty much all the limibic structures that aren't in the papez circut) |
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What lesion causes Kluver-bucy syndrome
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bilateral large temporal lobe lesions including amygdala, hippocampus, and uncus
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what are the sxs of KB syndrome in humans
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"disconnection" -increased oral activity, hypersexualtiy, hypermetamophosis, placidity, visual agnosia, bulimia
creepy guy on Private Practice had this lesions localize to bilateral temporal cortex and amygdala |
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what are some causes of KB syndrome in humans
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post traumatic encephalopathy, Herpes encephalitis, anoxia, subarachonid hemorrhage, pick's disease, alzheimer's, bitemporal infarction, focal status epilepticus
lesions localize to bilateral temporal cortex and amygdala |
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What lesion causes interictal personality
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temporal lobe epilepsy
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what are the sxs of interictal personality
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"Hyperconnected"-increase concerned with philosophical issues, hyposexuality, hypergraphia, viscosity
caused by temporal lobe epilepsy |
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which parts of the limbic system are associate with pleasure
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lateral hypothalamus, medial forebrain bundle (connects hypothalamus and septum), amygdala, nucleus acumbens, anterior cingulate cortex
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lesion to the ventromedial n. of the hypothalamus can result in
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pain, rage, averse reactions, hyperemotionality, weight gain
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lesion to the amygdala results in
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tameness, reduced emotinality, features of K-b syndrome (seizure=affective phenomena)
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what is the function of the amygdala
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attributes affective signficance to visual stimuli, integration of emotins and memory, storage of emotional memories
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what is the function of the septal region
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stimulation of sexual behavior
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lesion to the septal region results in
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increased sexual activity, enhacement of social contacts, tumor=rage, irritability
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what is the function of the hippocampus
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declarative and episodic memory formation
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lesion to the hippocampus can result in
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amnestic state
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the lesions causing wernicke korsakoff syndrome localize to (memory disturbances, confabulation, temorospatial disorientation)
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thalamus and mammilary bodies
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lesions to the anterior cingulate gyrus result in
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anterior=emotion and motor fxns
lesion=tourette's OCD, anxiety, tics, impulsive, apathy, akinetic mutsim etc. (hint: Aww Crap=tic=anterior cingulate) |
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Tourette's syndrome may be localize to abnormalities in
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the anterior cingulate cortex because of its role in vocalizations, emotion, and motor function
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lesions to the orbital frontal lobe may result in
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disinhibition, rude, etc.
hint: Phineas gage was an ornery F**k, OF=orbital frontal |
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lesions to the frontal/convexity or dorsolateral lobe may result in
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apathy, slow, automation "meh syndrome"
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lesions to the medial frontal lobe can result in
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motionless, mindless, wakefullness" lose drive to move or speak
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