Limbic System Flashcards
(29 cards)
Structures in charge of survival related behaviors
Hypothalamus
Septal nuclei
Medial and basolateral amygdala
Parts of brain that oversees where to and when to activate survival behaviors (food, water, sex, affiliation,fear, anger, aggression)
Prefrontal cortex
Orbitofrontal cortex
Anterior cingulate cortex
Structures that relay conscious and unconscious smell
Parahippocampal gyrus and incus
Amygdala
Entorhinal cortex
Associated learning sites
Amygdala
Mesiotemporal cortex
Bed nucleus of stria terminalis
Contextual memory, short term memory, and memory consolidation
Hippocampus
Mesiotemporal cortex
Reward / pleasure center
Nucleus accumbens / ventral striatum
What receptors are in the nucleus accumbens for reward?
D3 receptor
What can cause anterograde amnesia?
Lesion of hippocampus
What is in charge of perceiving stress?
Sensory info to amygdala
2 output pathways of amygdala
Stria terminalis
Ventral amygdalofugal pathway
Fear circuit (high road)
Sensory thalamus
Sensory cortex
Amygdala
Fear circuit (low road)
Sensory thalamus
Amygdala
Sensory input from sensory cortex and thalamus to what part of amygdala
Lateral nucleus of amygdala
Main output nucleus of amygdala
Central nucleus of amygdala
Amygdala to lateral hypothalamus does
Sympathetics (can release stress hormones)
Amygdala to DMN of vagus does
Parasympathetics
Amygdala to PAG does
Freezing
Amygdala to nucleus reticularis and pontis caudalis does
Startle reflex
Amygdala to PVN thalamus does
CRF release
Visual/fear pathway
LGN --> amygdala Or --> visual cortex --> amygdala Then to increase HR, BP, and muscle tone
What part of brain is slowly developed in ADHD
Prefrontal cortex
Children born to mothers with prenatal stress will have
Enlarged lateral nucleus of amygdala
People who have difficulty judging emotions from facial expressions have
Urbach Wiethe syndrome
What is Urbach Wiethe Syndrome?
Lipid storage disease that destroys amygdala
