Memory Pt 2: Storage, Retrieval, And Forgetting Flashcards
Sensory memory
Refers to the initial recording of sensory information in the memory system.
All information in the sensory memory is briefly held for how long?
1/2 to 4 seconds
Sensory memory include
Iconic memory and echoic memory
Iconic memory
A momentary sensory memory of visual stimuli
Iconic memory duration
Few tenth of a second
ICONic memory (way to remember)
Eye
Desktop icon
Echoic memory
A momentary sensory memory for auditory stimuli
Echoic memory duration
3-4 seconds
ECHOic memory
Memory will echo back
Sound
Why is sensory memory very hard to measure?
It fades away as we try to measure it
Who measured iconic memory?
George Sperling
Sensory memory disappears unless
You focus your selective attention on the information
Attention causes information to be further processed into
Short term memory
Subliminal message
Cannot be consciously aware of the message
Short duration (10-15 seconds)
Holds limited information
Short term memory
Only through ________ do short term memories become long term memories
Rehearsal/practice
“There comes a time when for every addition of knowledge you forget something you knew before” true or false?
False, long term memory is unlimited
Karl Lashley maze memory experiment for rats
She searched for the brain “engram” physical “memory trace” in rats after they had run mazes from 1920-1955.
Lashley’s belief on where memories are stored
Learning was NOT localized, all parts of the cortex worked together and as a whole
Long term potential (LTP)
Long-lasting strengthening of the connection between 2 neuron. Believed to be neural basis for learning and memory
Believed to be neural basis for learning and memory
Long Term Potential (LTP)
LTP process
Occurs naturally when we learn through association.. after learning has occurred, neurons involved in process become more efficient at transmitting the signals.
Drugs that block LTP affect
Learning drastically
Strong emotions are for stronger memories such as
Stress hormones boost impact on learning
LTP is what theory of memory?
BIOLOGICAL theory of memory
The lady who know exactly about all her past memories had an increase of
Long term potential
Long term POTENTIAL
Action potential
Loss of memory
Amnesia
Amnesiac patients typically have
Losses in explicit memory
Explicit memory aka
Declarative memory