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Unformatted text preview: Psychology 202: Memory Lecture 2/27/2012 Memory- the retention of information overtime • The curious case of HM (case study) o At age 11 started experiencing seizures, so doctor decides to remove parts of brain that causes the seizures (temporal lobes; hippocampus) o Caused severe memory problems- anterograde amnesia Couldn’t find his house or hold conversation Able to learn new skills, but didn’t remember learning it Connecting lines, mirror drawing, etc. Remembered information before his surgery o Insight: there are different types of memories, the hippocampus plays a role, but where else are they stored? The case of HM suggests: the hippocampus plays an important role in the consolidation of memories. The Nature of Memory 1) Information-Processing Model- Atkinson and Shiffrin • Proposed there are three types of information processing: o Sensory memory- encoding o Working memory (short-term memory)- storage Rehearsal o Long-term memory – retrieval o Inference and decay on all levels • Sensory memory → a memory of sensory events o EX. Still hearing a noise after a concert o Iconic memory- visual Lasts about half a second at the longest Helps maintain consistency in experiences o George Sperling → interested in how long information could be stored Brief sight of letters, then sounding of a tone to let patients know what row to choose let them do better (in lecture) o Echoic memory- auditory A little longer than visual memory • Short-term memory → working memory o Memory span- the number of digits an individual can report after a single presentation 7 + or – 2 (phone number) Held for about 10-20 seconds o Chunking- grouping of information into higher order units 10100100010000100000 10, 100, 1000, 10000, 100000 o Maintenance rehearsal- the conscious repetition of information that increases the time it stays in working memory. • Long-term memory → a relatively permanent type of memory o It is estimated that we can store 280 quintillion pieces of information 2) Working Memory Model → Baddeley • First information goes into sensory memory, and then it goes into long term memory (implicit or explicit), then working memory (central executive), which is made up of many different pieces....
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This note was uploaded on 03/15/2012 for the course PSYCH 202 taught by Professor Roberts during the Spring '06 term at University of Wisconsin.
- Spring '06