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Roles of the hippocampus and temporal lobe
Terms in this set (10)
Structures within the medial temporal lobe (2)
Amygdala and hippocampus
Location of hippocampus
Both hippocampus resides in the temporal lobes
Role of hippocampus and medial temporal lobe
-formation of explicit memories
-Formation of new LTM (consolidation) and forming new declarative memories
How long does it take for the hippocampus to form memories and what happens?
physical and chemical changes in the brain!
What happens if memory formation is interrupted
The memory never forms
Is hippocampus involved in stm storage?
No, only LTM as LTM has an independent storage and retrieval process to STM
Does the hippocampal area store the LTM?
No. once the LTM is formed in the hippocampal area, the memory is then sent to ortical areas of the brain specialised for memory storage
Role of amygdala
-Role in processing and regulating emotional reactions, particularly strong emotions such as fear.
-involved in encoding and storing emotional memories (and initiating a fear response)
Interaction of the amygdala and hippocampus
-stimulates the hippocampus to encode and store the relevant emotional details
-high levels of norepinephrine at the amygdala are signals to the hippocampus to remember the emotional memories)
How is the Amygdala involved with fear conditioning
-encoding and storage of memories associated with conditioned responses,
-e.g. being bitten by your neighbour's dog and feeling anxious the next time you see it
-people with damage to amygdala unable to acquire a conditioned fear response
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