Psych pwpt 6 - Sensory Memory Sensory Memory We often...

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Sensory Memory
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Sensory Memory We often perceive lightning as one “bolt” that lasts about a second or so. Visual persistence: Apparent persistence of a visual stimulus beyond its physical duration. Iconic memory: Visual buffer that holds visual information for brief periods of time (~1/4 second) Auditory equivalent is called echoic memory (~ 2 – 3 seconds)
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Iconic Memory: Sperling (1960) Used a tachistoscope (T-scope) Can control timing and position Can control what is seen before (preexposure field) and after the stimulus (postexposure field) Briefly flash an array of stimuli (e.g., letters), subjects report as many letters as they can. Whole report procedure Correct recall was about 4 or 5 items (~37% accuracy), even with exposure times of 5 ms or 500 ms.
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Partial report technique : Subjects see the array and then hear a tone after some delay after stimulus offset. High tone: top row Middle tone: middle row Low tone: low row Subjects can’t prepare ahead of time (strategize) If the tone was presented immediately after stimulus
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Psych pwpt 6 - Sensory Memory Sensory Memory We often...

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