Neuro: Hippocampus And Amnesia Flashcards
Where does the hippocampus reside?
In the parahippocampal gyrus (most medial portion)
What tract/structure connects the hippocampi’s to other regions and follows the curvature of the lateral ventricle?
Fornix
Hippocampus sits ___ and _____ to inferior horn of lateral ventricle?
Medial and ventral
What are the three zones of the hippocampus?
CA1,CA2,CA3
CA=cornu ammon
If the output from the hippocampus-> subiculum-> cerebral cortex, then the information is for…
Memory storage
If the output from the hippocampus->fornix-> hypothalamus, then that information is for..
Regulation of physiological and autonomic reactions
During memory consolidation, what is the hippocampus required for?
It strengthens the synapses of reciprocal connections
After memory consolidation, the hippocampus is used for..
Nothing, you can recall without using the hippocampus
What are the two types of long term memory?
Declarative and non declarative
What cortex of the brain is working memory?
Prefrontal cortex
Which type of long term memory uses hippocampus?
Declarative
What are the two types of declarative memory and what are they for?
Semantic- recall facts
Episodic- events
What are the two types of non-declarative memory and what are they for?
Procedural- skills/habits
Associative learning- conditioning
Which type of non-decorative memory uses amygdala and sometimes hippocampus?
Associative learning
What is anterograde amnesia?
No new memories
What is retrograde amnesia?
Can’t recall past events
Hippocampus is for memory ______.
Consolidation
Cortex is for memory ____ and ______
Storage and retrieval
What is re-consolidation?
Recent memories need to be repeatedly re-consolidated to allow for permanent or long-lasting retention
The amygdala is can effect what parts of memory?
It can enhance or impair declarative memory for information from emotionally charged events
The information or memory recalled from the cortex comes from the same region that…
The original sensory input came from
What type of input to the hippocampus is targeted for early treatment of Old Timer’s Disease?
Cholinergic
What region do the hippocampus is most susceptible to ischemia or hypoxia?
CA1
Hippocampus and parahippocampal gyrus are one of the most common focal points for what kind of abnormal electrophysiology?
Seizures and epilepsy
What is Limbic encephalitis and what are its effects?
Viral encephalitis that can cause neuro degeneration of limbic and medial temporal lob regions.
