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The role of the limbic system in memory and emotion

The main function of the hippocampal formation is ? * the consolidation of long-term memories from intermediate and short-term memories
How the Hippocampal Formation has input and output connections with the association cortex ? * through the entorhinal cortex
The hippocampal formation is composed of ? * the hippocampus, the dentate gyrus, and the subiculum
The major input to the hippocampal formation is from the entorhinal cortex via a diffuse projection called ? *the perforant pathway
The entorhinal cortex also projects to the hippocampus and the subiculum through ? *the alvear pathway
The major efferent (output) connection of the hippocampal formation is ? * the fornix
The two things that communicate to the Fornix ? * The medial diencephalic memory systems communicate with the medial temporal memory systems (hippocampal formation)
Involves the conscious recollection of facts or experiences ? *Declarative Memory- Explicit Memory....loss is amnesia
Involves the non-conscious learning of skills, habits, and other acquired behaviors? *Non-declarative Memory-Implicit Memory
Selective loss of declarative memory is typical of ? *bilateral temporal lobe or bilateral medial diencephalic lesions....unilateral lesions do not usu cause major deficits
Memory that Operates on a time scale less than 1 or 2 minutes ? *Working Memory --- Depends on an intact dorsolateral prefrontal association cortex and unimodal and heteromodal specific association cortices
Memory that Operates on a time scale less than 5 minutes to years ? *Recent or consolidated memory --- Depends on an intact medial temporal and medial diencephalic structures which mediate a process by which declarative memories are consolidated in the neocortex
Memory that Operates on a time scale of years ? *Remote memory --- Remote declarative memories are recalled through the activity of specific regions of the neocortex without requiring medial temporal or diencephalic involvement
Diseases that affect memory ? *Alzheimer’s and Wernicke-Korsakoff syndrome
The amygdaloid complex is a group of nuclei located in ? *the anteriomedial temporal lobe
The amygdala represents an interconnection between ? *the association cortex and subcortical structures, in particular the hypothalamus. It also has direct connects with olfactory structures.
Increased activity in the amygdala is associated with ? *aversion, fear, anxiety, phobias and rage.....does play a role in the association of memory with emotional states
Three nuclear groups of the Amygdaloid Complex ? *basolateral nucleus, corticomedial nucleus - are involved in olfaction , central nucleus - autonomic control
Amygdaloid Complex Afferent Connections ? *receives and transmits information from heteromodal association cortex and limbic cortex through two pathways
Amygdaloid Complex Efferent Connections ? *The Stria Terminalis (the fornix of the amygdala)- connecting the amygdala with the hypothalamus and septal areas ...... *The Ventral Amygdalofugal Pathway - connecting the amygdala to forebrain and brain stem structures
bilateral lesions of the amygdala ? * Kluver-Bucy Syndrome - Decreased aggression and Unable to retrieve or learn associations between stimuli (cant recognize an enemy to flee, etc.)
Urbach-Wiethe Disease ? * a decrease in amigdala activity that causes a something that should cause fear, to not
PTSD ? *an increase in amigdala activity that causes extreme fear at inappropriate times
Main function of the hippocampus ? *taking short term declarative memories to long term
Created by: thamrick800