Limbic Flashcards
What is the primary function of the limbic system?
Processing emotions, motivation, and memory.
Which part of the brain controls the autonomic nervous system (ANS)?
The hypothalamus.
What is the Papez circuit responsible for?
The expression of emotions.
Name two structures that are part of the limbic system.
- Amygdala
- Hippocampus
What does the central nucleus of the amygdala control?
Behavioral and physiological responses to emotional stimuli.
What does the lateral nucleus of the amygdala learn?
To associate stimuli with emotional significance.
What syndrome results from bilateral damage to the amygdala?
Klüver-Bucy Syndrome.
What are two key components of the hippocampal formation?
- Dentate gyrus
- CA fields
What is the role of the entorhinal cortex?
Relaying sensory information to the hippocampus.
What is declarative memory?
Conscious recollection of facts and experiences.
What is the role of the fornix in the hippocampal formation?
Connecting the hippocampus to the mammillary bodies.
What memory-related syndrome is caused by chronic alcohol abuse?
Korsakoff’s Syndrome.
What neurotransmitter is involved in the formation of flashbulb memories?
Noradrenaline.
What was the outcome of removing the hippocampal formation in Patient HM?
Anterograde amnesia (inability to form new memories).
What is the difference between declarative and non-declarative memory?
Declarative memory involves conscious recall; non-declarative does not.
What is an example of episodic memory?
Remembering what you had for dinner last night.
What is an example of semantic memory?
Knowing who the President of the USA is.
Which brain structure is responsible for the physiological manifestation of emotions?
The hypothalamus.
What is the main output channel of the amygdala?
The central nucleus.
How does the hippocampus aid in memory consolidation?
It temporarily stores information and helps transfer it to long-term memory.
What is the main symptom of Korsakoff’s Syndrome?
Anterograde amnesia.
Which brain structure processes fear and aggression?
The amygdala.
What is the hippocampus primarily involved in?
Memory formation and learning.
What does the limbic system integrate?
Physiological, autonomic, hormonal, and behavioral responses to stimuli.
What is the role of the mammillary bodies in the limbic system?
Relaying information to the thalamus for emotion processing.
What are flashbulb memories?
Emotionally significant memories formed quickly.
What happens during memory consolidation?
Short-term memories are strengthened into long-term memories.
What was learned from Patient HM’s mirror drawing task?
Non-declarative memory can still form without the hippocampus.
What are the consequences of thiamine deficiency in Korsakoff’s Syndrome?
Neuron death and irreversible brain damage.
How does the limbic system support survival?
By remembering emotional events to guide future decisions.
