8.1.4 Memory Flashcards
Where are memories stored?
Across wide areas of the brain, not one specific area
What are the different types of memory?
Declarative/ explicit
Nondeclarative/ implicit
Short term memory
Long term memory
What is declaritive memory?
Factual information,
Stored in the cerebral cortex
What is non-declarative memory?
Motor skills
Emotion
Stored in subcortical structures (basal ganglia) and cerebellum
What is short-term memory?
Stored for seconds to minutes as a reverberation or echo in cortical circuits
What is long-term memory?
Stored for very long periods in Cerebral cortex, cerebellum up to a lifetime following consolidation
What is consolidation?
Conversion of short term memories into long term memories
What factors influence consolidation?
Emotional context
Rehearsal
Association
What type of memory does the hippocampus help to consolidate?
Declarative memories
Outline some features of the hippocampus
Sits deep in the temporal lobe
Multimodal inputs from many brain systems
Role as an oscillator, facillitating consolidation of memories in the cortex via output pathways
Outline the hippocampus output pathway
Primarily the fornix
Mammillary bodies
Thalamus
Cortex
What is the key molecular mechanism of memory consolidation?
Long term potentiation, causes changes in glutamate receptors leading to synpatic strengthening
New physical connections can form between neurones to further strengthen connections, axonal sprouting
What is the key molecular mechanism of memory consolidation?
Long term potentiation, causes changes in glutamate receptors leading to synpatic strengthening
New physical connections can form between neurones to further strengthen connections, axonal sprouting
