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Psc 1
Exam 2 - Chapter 7: Memory
21
Psychology
Undergraduate 1
10/29/2007

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Term
Memory
Definition
The capacity of the nervous system to acquire, retain, and retreive usable skills and knowledge, allowing organisms to benefit from experience
Term
3 Stages of the Temporal Sequence of Memory
Definition

1)Encoding: transformation of perceptual experiences into mental representations

2)storage: retention of encoded representations over time (consolidation)

3)Retrieval: recalling/remembering stored information

Term
HM
Definition
Following damage to the medial temporal lobes(MT), patient HM was unable to form new memories
Term
Modal Memory Model
Definition
Sensory Input -> sensory memory (unattended info is lost)-> short-term memory(unrehearsed info is lost) -> long-term memory (some info might be lost over time)
Term
Sensory Memory
Definition
aka "working memory" -very brief duration (200-500msec); includes:

1)Iconic (visual) memory

2)Echoic (auditory) memory

-limited capacity: ~7 units, eg phone number
Term
Working Memory
Definition
an active processing system that keeps different types f information available for current use
Term

Chunking

Definition
recording information in the short-term memory for more efficient use
Term

Serial Position Effect

Definition

the tendency to remember words at the beginning (primacy) and end (recency) of a list, not the middle

Term
Long-term Memory
Definition

                               Long-term Memory
                                   |                                    |
                     Explicit Memory             Implicit Memory

                       |                       |                |                     |

                    Episodic         Semantic      Procedural     Reptition Priming

Term
Explicit vs. Implicit Memory (Long-term)
Definition
Explicit                                        Implicit
Declarative (eg dates)                  Procedural (eg bike riding)
Consciously Accessible                  Outside of conscious
                                                awareness
effortful                                      Automatic
Term
Explicit Memory: Episodic vs. Semantic
Definition
Episodic: Personal experiences (eg graduation)

vs.

Semantic: Knowledge about the world (eg remebering president before current president)
Term
Implicit Memory
Definition
Automatic:

1) Procedural Memory: muscle memory

2) Repetition Priming: identifying a previously experienced stimulus based on ambiguous info (the improvement in identifying or processing a stimulus that has previously been experienced)
Term
Memory Consolidation
Definition
The transfer of information from short-term to long-term memory (slow assimilation of memory over time)

-sleep: brain takes acquired info and turns it into long-term memory
Term
Schemas
Definition
Cognitive structures that help us perceive, organize, process, and use information
Term
Retreival Cues: Encoding Specificity
Definition
encoding a stimulus with an experience can later trigger memory for the exerience (eg taking a test in the same environment as when studying will yield better results)
Term
Karl lashley - Engram

-equipotentiality
Definition
Biological means of memory storage (single physical location)

-wasn't able to find engram

-equipotentiality: any memory can be stored in any area of the brain
Term
Forgetting - Transcience
Definition
decay of memories unless info is rehearsed
Term
Interference
Definition
new info can interfere with ability to recall old info & vice versa (old info can info with learning new info)
Term

Amnesia
1)retrograde
2)anterograde

Definition

deficit to long-term memory

1)can't recall anything for certain length of time

2)events that occur after incident aren't remembered - eg HM

Term
Distortions of Memory - Confabulation

-karsakoff's syndrome
Definition
falsified episodic memories (that's why eyewitnesses aren't completely reliable)

-damage to MTL caused by insufficient nutrition; leads to amnesia and confabulation
Term
Source Misattributions
Definition
incorrect association of an episodic memory with a particular person, event, location, etc. (eg problems with eyewitness testimonies)
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