Limbic System Flashcards
What is the afferent pathway of the hippocampus?
Perforant pathway
What is the efferent pathway of the hippocampus?
Fornix/fimbria
Name two conditions associated with the hippocampus
Epilepsy
Alzheimer’s (temporal lobe atrophy)
Which part of the brain is involved in the early stages of Alzheimer’s and what are the initial symptoms?
Short term memory loss:
Hippocampus + Entorhinal cortex
Which part of the brain is involved in the moderate stages of Alzheimer’s and what are the symptoms?
Dressing apraxia
Parietal lobe
Which part of the brain is involved in the later stages of Alzheimer’s and what are the symptoms?
Loss of decision making
Frontal lobe
Where do afferent connections to the amygdala come from?
Septum Brainstem Temporal neocortex Hippocampus Olfactory cortex
(Some boys never have orgies)
What is the efferent connection from the amygdala?
Stria terminalis
What are the symptoms of kluver bucy syndrome?
Hyperorality
Hypersexuality
Loss of fear
Visual agnosia
Which structures are shown to be associated with aggression?
Hypothalamus
Brainstem PAG
Amygdala
Which neurotransmitter is thought to be involved in aggression and in which area?
Serotonin in the raphe nucleus
What are the main afferent connections to the septal nuclei?
Amygdala
Olfactory tract
Hippocampus
Brainstem
What is the main efferent pathway from the septal nuclei?
Stria medullaris thalami
Where do the efferent projections from the septal nuclei connect to?
Thalamus
Hippocampus
Hypothalamus
What is the main function of the septal nuclei?
Reward & reinforcement
