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Sensory Memory. What is memory, and why is it important? What is sensory memory? Is sensory memory useful?. Introduction to Memory. A set of processes for storing, retrieving, and using information after the information is no longer present Memory makes us who we are.

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Sensory memory
Sensory Memory

  • What is memory, and why is it important?

  • What is sensory memory?

  • Is sensory memory useful?


Introduction to memory
Introduction to Memory

  • A set of processes for storing, retrieving, and using information after the information is no longer present

  • Memory makes us who we are


Three store model atkinson shiffrin 1968
Three-Store Model (Atkinson & Shiffrin,1968)

Sensory Register

Rehearsal

Coding

Short-Term Store

Response

Long-Term Store


Sensory memory1
Sensory Memory

  • Continued access to sensory information for a short time after the stimulus is gone

  • Iconic Memory (visual)

  • Echoic Memory (auditory)

  • Possibly for Other Senses


Sperling s partial report method
Sperling’s Partial Report Method

H R Q P

L M F R

X N D B

blank screen

delay

(time varies)

blank screen

cue row

(arrow or tone)

letters

(50 ms)

The cue is only helpful if you have an

iconic memory to examine!


Sperling s results
Sperling’s Results

10

partial report

8

6

LETTERSRECALLED

4

whole report

2

0

.15

.30

.50

1.0

DELAY IN SECONDS


Evolutionary psychology
Evolutionary Psychology

  • Is Sensory Memory adaptive?

    • artificial laboratory situation

    • duration is too short

    • we can usually look as long as we want

    • Haber: not useful in any situation “except reading in a lightning storm.”


Usefulness of sensory memory
Usefulness of Sensory Memory

  • helps in perception: persistence of vision

  • used to select information for further processing


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