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Lecture 4

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Wilfrid Laurier University
Eileen Wood

January 12, 2012 PS101 Lecture 4 What is Memory?  Cornerstone of cognition  Required for most higher-order functions - Language - Problem solving - Readings Caveat  We will highlight - Limitations - Reservations - Vulnerability of memory  Do not be discouraged  Tremendous system, powerful, despite idiosyncrasies A Model of Memory  Three processes - Encoding - Storage - Retrieval Encoding  Acquiring information  Detect the information (the code) prepare it to be placed in memory  Code can be sound pattern, letter sequence, image, tactile cue, smell, etc.  Translated into a neural code Storage  Encoded information has to be retained  Has to be a memory trace Retrieval  Accessing memories  Try to remember what was stored  Recall/Recognition Recall vs. Recognition  Recall - What is the operant term used to denote when something is added to the environment that increases the probability that a behaviour will reoccur - Answer: ____________________  Recognition - Positive reinforcement involves adding something to the environment that increases the probability that a behaviour will reoccur - True/False Memory Model Executive Sensory Register Short Term Memory Long Term Memory (STM) (LTM) Environment Working Memory Lost Forgetting Sensory Register/Memory  Holds raw sensory input - Iconic stores – visual information o Lasts fractions of a second (1/4 of a
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