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PSY270H1 (153)

Ch6 Textbook Notes

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University of Toronto St. George
Christine Burton

CHAPTER 6 LONGTERM MEMORY STRUCTURELocating Short and LongTerm Memory in the Brain Neuropsychological Studiesstudying people with brain damage that has affected one function while sparing the otherpatients with functioning STM who cant form new LTMs patients with poor STM but functioning LTMdouble dissociation indicates that STM and LTM operate independently and are served by different mechanismsHM demonstrated that it is possible to lose the ability to form new LTMs while still retaining STMKF had greatly reduced digit span about 2 but had a functioning LTMBrain ImaginingDeborah Talmi and colleagues 2005 measured fMRI responses to tasks involving STMLTMparticipants presented with a list of words then a single probe wordprobe was 1 a word near the beginning or 2 a word near the end or 3 new wordtask was to indicate whether the word has been presented beforeresults indicated that probe words from the beginning represent LTM activated areas of the brain associated with LTM and STMword is in LTM primacy effect and transferred to STM when recalledwords from the end of the list only activated areas of the brain associated with STMresults of other brain imaging experiments arent as clear cutmay be due to constant interplay between STM and LTMmay be because STM and LTM share some of the same mechanisms Types of LongTerm Memory explicit memory conscious or declarative can be described or reportedepisodic memory memory for personal experiencessemantic memory stored knowledge and memory for factsimplicit memory nondeclarative or unconscious used without awarenesspriming a change in response to a stimulus caused by the previous presentation of the same or a similar stimulusprocedural memory memory for doing thingsclassical conditioningEpisodic and Semantic Memory ExplicitDistinguishing Between Episodic and Semantic MemoryEndel Tulving 1985 episodic and semantic memory can be distinguished based on the type of experience associated with eachdefining property of the experience of episodic memory is that it involves mental time travel experience of traveling back in time to reconnect with past events
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