Memory CDD 3259
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3 types of Memory categorized by time
- 1. echoic, perceptual, sensory
- 2. working, blackboard, short-term
- 3. long-term
explicit (declarative) memory
- everyday usage
- includes semantic, episodic
implicit (non-declarative) memory
- memory for skills, habits, and behavior
How is memory stored?
neurochemical equation that are linked between a collection of cells
What is a memory called?
aka a memory trace
Where is short term memory housed?
in the frontal lobes, temporal lobes and distributed throughout the brain
Medial temporal lobe areas of particular importance are:
- entorhinal cortex
- perirhinal cortex
- parahippocampal area
Where are long term memories housed?
in the diencephalon and distributed throughout the processing brain regions
Diencephalon regions of particular importance:
- anterior nucleus of the thalamus
- dorsomedial nucleus of the thalamus
serious loss of memory and ability to learn
Three types of amnesia
- retrograde amnesia
- anterograde amnesia
- transient global amnesia
memory loss for events that occurred before the trauma
inability to form memories for event that occur after the trauma
transient global amnesia
a sudden occurrence of anterograde amnesia that is also often accompanied by retrograde amnesia for recent events
occurs for a short time period during which the person is confused and often disoriented it is often the result of a transient ischemic attack (a vascular episode)
concept of a memory process that links events and ideas together
Where does relational memory take place?
hippocampus (still under debate)
- non-declarative memory (implicit memory)
- is involved in how we do things (the processes, the steps)
Where is procedural memory stored?
Mainly in cerebellum
What is important in planning and executing procedural memory?
striatum (basal ganglia region)
What is the striatum composed of?
the caudate nucleus and the putamen
Where does perceptual memory occur?
within the specific sense area of the brain
Important area for working (short term memory):
the pre-frontal lobe
Important areas for declarative and non-declarative memories
temporal lobes and specific diencephalon areas
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