CLPS 0200 Lecture Notes - Lecture 5: Sensory Memory, Iconic Memory, Stimulus Modality
11 Nov 2016
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Document Summary
02-19: sensory and working memory memory at computational level. Goal: encode, store, retrieve info for the current task/situation in the world. Solution: analogy to library systems: active system helping retrieve articles, arranged in a specific way, prioritization of classification, analogy to web search: retrieve relevant info based on given cues memory at algorithmic (representational) level. What representations and processes are used in each: maintenance, encoding, retrieval, familiarity. Sm wm ltm sensory memory: iconic. Demo: sperling 1960: whole-report vs. partial-report, remember as many letters as you can in a 3x4 matrix (very brief stimulus duration) most 25% Is this an accurate estimation of capacity? or retrieval issue: same demo but retrieve from cued row (cue very close afterwards) can remember all the letters, type of cue doesn"t matter. How long does sm last: with delayed cue, partial report task becomes harder, by 200-250 ms, decay; by 1s, baseline.
