chapter 8 - memory Flashcards
3 processes of memory
encoding, storage, retrieval
what is encoding
translating information into a neural code so it can be stored for later use
what is storage
process by which information is retained over time
what is retrieval
pulling information back out of mind for use
what is the three component model
sensory memory, short term/working memory, long term memory
what is sensory memory
shortest memory, mostly associated with visual and auditory information, held through 2 types of sensory registers
2 kinds of sensory registers
iconic store: visual info
echoic store: auditory info
what is short term memory
where we temporarily store and process a limited amount of information
limited capacity: 7 plus minus 2
limited duration: 20 seconds
information storage in STM
visually (images), phonologically (sounds), semantically (meaning), action (motor patterns), if you store too much in one too quickly causes error
Increasing STM Capacity
chunking: group small “bits” into larger “bits”, e.g. phone number
Increasing STM Duration
Maintenance Rehearsal: Simple repetition
Elaborative Rehearsal: Focus on Meaning
what is long term memory
durable story of past events and learned knowledge, capacity believed unlimited, can endure lifetime
types of long term memory
Declarative memory- explicit (consists of episodic and semantic),
procedural memory- implicit
what is anterograde amnesia
loss of ability to assimilate and retain new knowledge
what is retrograde amnesia
loss of memory for events that have happened in the past, can still make new memory
Henry Molaison
bilateral temporal lobectomy, lessened epilepsy but caused anterograde amnesia, learned declarative memory and procedural systems are different, medial temporal structures are important information of semantic and episodic long-term memories, working memory does NOT require medial temporal structures
K.F.
motorcycle damaged left parietal occipital region, short term memory damage, long term in tact, taught us that long term does not require functioning short term to encode new information
Clive Wearing
virus attacked CNS, anterograde and retrograde amnesia, can learn new tasks using procedural memory