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What is memory?. Chapter 1. What is memory?. Three definitions (Spear & Riccio, 1994) location where information is kept e.g., a storehouse, or memory store thing that holds the contents of experience e.g., a memory trace or engram
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What is memory? Chapter 1
What is memory? • Three definitions (Spear & Riccio, 1994) • location where information is kept • e.g., a storehouse, or memory store • thing that holds the contents of experience • e.g., a memory trace or engram • mental process used to acquire (learn), store, or retrieve (remember) information
Early Memory Research in Psychology and Neuroscience • Ebbinghaus (late 1800s) • nonsense syllables • basic memory phenomena • learning curve • massed vs. spaced/distributed practice • forgetting curve • overlearning • savings
Early Memory Research in Psychology and Neuroscience • Lashley (1950) • engram: neural representation of memory • quantity, not location • memory distributed all over cortex
Early Memory Research in Psychology and Neuroscience • Hebb (1949) • two stage process • neural excitation would reverberate around connections of neurons • some of these connections would physically change and become stronger • long-term potentiation
