Chapter 8: Memory Flashcards
3 basic activities involved in memory
encoding- taking perceptual sensory data and transferring to the brain where it can be stored
storage- retaining memories for future use
retrieval- recapturing memories into consciousness
Information processing model
suggests that information passes through three memory stages during encoding, storage, and retrieval.
(sensory memory, working memory, long term memory)
Sensory Memory
Detailed, brief sensory image of stimuli that is retained for a brief period of time
Lasts up to 1/2 sec for visual and 2-4 sec for auditory
Large capacity
Working Memory
Holds information temporarily for analysis. Conscious effort
Lasts up to 30 sec without rehearsal
Limited capacity of 5-9 items
“use it or lose it” – enter long term memory when rehearsed
Long Term Memory
Relatively permanent storage. Hold information we previously gathered, available for retrieval and use in a new situation
Relatively permanent and relatively unlimited capacity
Parallel Distributed Processing Model
Suggests information is represented in the brain as a pattern of activation across entire neural networks
These networks resulted in sophisticated memories, broad knowledge, and ability to make better decisions
Automatic Processing
Attend info without much conscious awareness and with little to no effort.
Particularly information about time, space, and frequency
Effortful Processing
Encoding of information through careful attention and conscious effort
Heavily disrupted by multitasking
Rehearsal
Conscious repetition of information in an attempt to make sure information is encoded
Moves information from sensory to working and from working to long term memory
Spacing Effect
Facilitated encoding of material through rehearsal situations spread out over time
Phonological Code
repeating sounds of number again and again
Better for verbal information like digits and words
Visual Code
holding image of stimuli
Better for non verbal things like people faces and objects
Eidetic Memories
photographic memory
recall object or scene with great detail and near perfect accuracy. lasts for several minutes
Semantic Codes
representations based on meaning of information
used to encode verbal information into long term memory
Mnemonic Devices
techniques used to enhance the meaningfulness of information to make it more memorable
ex:
Disruptions to Memory
Failure of attention
Lack of rehearsal
Decay
Proactive interference
Retroactive interference
Damage to the brain
Memory Span
maximum number of items that can be recalled in correct order (7 +/- 2)
Chunking
grouping bits of information together to enhance ability to hold that information in working memory