PSYC 213 - Chapter 6

PSYC 213 - Chapter 6 - Chapter 6; Long-Term Memory: Basic...

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Chapter 6; Long-Term Memory: Basic Principles Introduction: Example: Sacks: Patient Jimmy who can’t remember meeting the Doctor, or answering questions about his life. Patient suffers from Korsakoff’s Syndrome : condition caused by a prolonged deficiency of Vitamin B1- usually caused by chronic alcoholism. Leads to the destruction of areas in the frontal and temporal lobes that cause severe memory damage. Jimmy can’t retain new knowledge-similar to Clive Wearing-unable to form new long-term memories, so he can only remember 30-60 seconds prior. - This chapter looks at how long-term memory operates Fig. 6.2 Introduction to LTM Types of LTM Getting information into LTM Physiology of LTM storage Retrieving information from LTM Introduction to Long-Term Memory Long-Term Memory can store memories ranging from a few seconds ago, to as early as the first memory. Fig.6-3 shows an example of a student remembering what events occurred at various times in the past. All those memories are contained in the LTM, but they aren’t all the same. More recent memories tend to be more detailed; much of the detail fades away with the passage of time and as other experiences accumulate. One of the things we are concerned about in this chapter is why we retain some information and lose other information. LTM does not only retain information from the past, it also workings with working memory to help create our ongoing experience. ex. Fig. 6-4 : Tony’s friend Cindy says that she and Jim saw the new James Bond movie last night. Tony’s working memory is holding the wording of her statement in his mind, and is simultaneously accessing information from his LTM, which helps him understand what Cindy is saying. Tony’s ability to understand the sentence depends on retrieving from his LTM, the meanings of words what Cindy says. LTM also contains additional information about movies, James Bond, and cindy. So LTM provides an archive that we can refer to when we want to remember events from the past, and background information when we use working memory to make contact with what is happening at a particular moment. Distinctions between LTM and STM The interplay between what’s going on in the present and information from the past is based on the distinction between STM and LTM. In the 1960s research started to distinguish short-term processes and long-term memory. This distinction was made in a classic experiment by B.B. Murdoch (1962): Demonstration : Serial Position : Test on pg. 234: get someone to read you the words, and then write down as many as you can remember. Then look if you memorized more words from the first or last five or the middle. Murdoch did this experiment on a large number of people and plotted the percentage recall for each word vs. the word’s position on the list, to get the serial-position curve . Serial-position curve:
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This note was uploaded on 02/13/2011 for the course PSYC 213 taught by Professor Levitin during the Winter '08 term at McGill.

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PSYC 213 - Chapter 6 - Chapter 6; Long-Term Memory: Basic...

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