Transcript Storage (9/10)

Storage
Sensory Memory
• “fleeting”
• Sensory Registry
– Iconic – Echoic -
Working/Short-Term Memory
• From sensory memory, we illuminate by focusing on
some info via our selective attention
– Without active processing, short term has limited life
• Time/duration: 20 seconds
• Capacity: “magical #7 (+/- 2)” – auditory input
– #3 (+/-1) for visuals
• Short term recall slightly better for random digits
– Slightly worse for random letters (more similar sounds)
What’s the point?
• At any given moment, we can consciously
process only a very limited amount of
information
Long-Term Memory
• Capacity for memory is limitless
– Not fully known, is it genetic or learned?
• The Real Rain Man
• http://www.youtube.com/watch?v=k2T45r5G
3kA
Types of Long-Term Memory
1. Episodic
•
Memories are personally experienced
•
what most people refer to as “memories”
• What did you have for breakfast this morning?
• What did you wear on the first day of school?
2. Semantic
• General factual knowledge
• Knowing what/that
3. Procedural
• Memories related
to skills or habits
–
Things that are welllearned
• Knowing how
Explicit and Implicit Memories
• Explicit (declarative)
– “I have an explicit memory of playing at a
particular golf course”
– Located where?
• Implicit (non-declarative)
– “It’s that thing about the stuff, well, you know I
know – I just can’t say right now…”
– explaining to someone how to tie a shoe.
- CC
- Located where?
Hierarchy
Storage and the brain
• Hippocampus
– Possible storage bin, where over time info goes to
other parts of the cerebral cortex
• Left frontal for auditory
• Right frontal for episodic memories
• Cerebellum
– Implicit memories stored
– Amnesia patient example
Dual System of Memory
1. Explains our parallel processes
2. Infantile amnesia
•
What we learn in the first three years (i.e.
walking) extends throughout life, but we don’t
recall learning it (i.e. circumcision)