Limbic System Flashcards
7 basic components to limbic system
- hippocampus
- septal area
- amygdala
- mammillary bodies
- prefrontal cortex
- cingulate gyrus
- hypothalamus
2 functions of limbic system
- short term memory
2. MODULATE functions (either hypothalamus or midbrain periaqueductal gray)
Limbic structure receive from
1.
2.
- sensory systems (1 or more; directly or via cortical connections)
- brainstem systems (neurotransmitters; basis of mood changes)
Limbic structures project to
1.
2.
- directly OR indirectly to hypothalamus, midbrain pag, or somatic motor (all modulation function)
- feedback signals to cortex (provides emotional quality to sensory signals)
Limbic structures project to
1.
2.
- directly OR indirectly to hypothalamus, midbrain PAG, or somatic motor (all modulation function)
- feedback signals to cortex (provides emotional quality to sensory signals)
Another name for 2 way circuit for flow of emotion and memory storage
Papez circuit
Which area of the limbic system is heavily targeted in Alzheimer’s?
hippocampus
What comprises the hippocampal formation?
- hippocampus
- dentate gyrus
- subicular cortex
The hippocampal formation receives input from what 4 areas?
- endorhinal cortex
- septal area
- prefrontal cortex
- reticular formation
ESP-R
Which area of the limbic system is heavily targeted in Alzheimer’s?
hippocampus, amygdala, & parahippocampal gyrus
The hippocampal formation receives input from what 4 areas?
- endorhinal cortex (olfactory, visual, auditory)
- septal area
- prefrontal cortex
- reticular formation
ESP-R
Which disease are there deficits linked to prefrontal & temporal-hippocampal cortical functions?
schizophrenia
- verbal memory impairment
- memory deficits profoundly verbal
How is depression linked with the limbic system?
- impacts acquisition of new knowledge
(information exceeds capacity of working memory) - linked with difficulty in concentration
- deficits in recall, but not recognition memory
- may also alter memory content based on mood at time of the memory
How is depression linked with the limbic system?
- impacts acquisition of new knowledge
(information exceeds capacity of working memory) - linked with difficulty in concentration
- deficits in recall, but not recognition memory
- may also alter memory content based on mood at time of the memory
Which disease related to the limbic system enhances detail recall (working memory) but will interfere with problem solving?
anxiety
