Unit 3 - 8: Learning And Memory Flashcards
Learning
Process of acquiring new info
Memory
Store and retrieve that info
Short term memory
Stores info as long as we repeat and focus on it
Long term memory
Stored for hours, days, years, relies on physical changes in brain
Long term memory includes:
- Declarative memory
- Nondeclarative memory (procedural)
Declarative memory
Things you know and can tell others
Non declarative memory
Things you know that you can show by doing
Amnesia
Severe impairment of memory, usually due to brain damage/ disease
Retrograde amnesia
Loss of old memories but new ones can be formed
Anterograde amnesia
Old memories are intact but new ones can’t be formed
Episodic memory
Recalling specific episode in the past; knowing info on its time, place, and sequence of events
Semantic memory
Recalling general info (meaning of words/ rules of a game)
Location of declarative memory formation
Medial temporal lobe
Model of declarative memory formation (6)
- Sensory processing cortex
- Parahippocampal entorhinal, Perihinal cortex
- Hippocampus
- Medial diencephalon, mammillary bodies
- Declarative memory storage in cortex
Types of non declarative memory (3)
- Skill learning (basal ganglia, cerebellum, motor cortex)
- Priming (cortical process)
- Associative learning
Operant conditioning
Animals form associations between a behavior and consequence
Cognitive maps
understanding of the relative spatial organization of objects and information (hippocampus and place cells)
Sensory buffers
Shorter than short terms memory, fleeting glimpse of something and it fades away
Working memory
ability to manipulate by executive processing our short term memories and make associations with long-term memories; important for problem solving
Processes/ Stages of memory formation (3)
- Encoding (turn sensory info into short term memory)
- Consolidation (turning short memory into term)
- Retrieval (accessing info stored in long term memory for use in working memory
Epinephrine and memory
Affect amygdala, enhances memory formation
Long term memory receptor and neuronal changes (requires neuroplasticity)
- Increased synapse area
- Increased transmitter release or response
- New interneuron connection becomes active
- New connections formed through axonal sprouting
- More active synapses take over less active competitors
- Heavier, thicker cortex
- Enhanced cholinergic activity
- More dendritic branches and spines
- Larger cortical synapses
- More hippocampal neurons
- Enhanced recovery from brain damage
Long term potentiation
After high frequency stimulus, the strength of EPSPs increases and stays higher
Long term Potention receptors
Glutamate receptors, AMPA, NMDA