DSA: Hypothalamus + Thalamus + Limbic System Flashcards
Bilateral temporal lobe lesions that abolish the amygdaloid complex = what syndrome
Kluver-Bucy Syndrome (you get a lot of weird behavioral changes)
- visual agnoisa: can’t recognize an object by sight
- hyperorality: examine things w/ mouth
- hypermetamorphosis: have to explore your immediate environment
- placidity: doesn’t show fear when you should
- hyperphagia: eating when not hungry
- hypersexuality
Distortion in a small experience or the perception of a smell when no odor is present =
phantosomia (olfacotry hallucination)
Loss of smell due to a viral infection =
ansomia
What is Korsakoff’s Syndrome?
Progressive degeneration of the mamillary bodies, and affects long term memory (can’t retain new memories)
confabulate –> formulate a memory that never occured
caused by thiamine deficiency (chronic alcholism)
Hippocampal Amnesia results from? Causes
Bilateral lesions of the hippocampus
Deficit in anterograde episodic memory (cannot learn new material)
What is the primary rolw of the hypothalamus?
Homeostasis
Strokes involving larger thalmic arteries may result in total/dissociated sensory losses which is very painful. This is called?
Dejerine-Roussy Syndrome
The limbic system does what?
Influences behavior, memory, and pain
-subcallosal, cingulate gyrus, parahippocampal gyrus, uncus, hippocampal formation, subcortical nuclei
What is the afferent pathway for the hippocampus(emotions)?
Perforant
efferent = fornix
The papez cirucit is for what?
A circuit for the elboration of emotion.
Has mamillary bodies, subiculum, thalmus, parahippocampus
Amygdala function?
Motivation + emotional experiences
What plays an important role in behaviors related to addiction + chronic pain?
Nuculeus Accumbens
This area plays an important role in reward + motivation:
Ventral tegmental Area
This area is for pleasure:
Medial forebrain bundle
This area is for controlling rage behavior:
Septal region
