memory - by sushanta & team

8/6/2019 Memory - By Sushanta & Team

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8/16/2011Presentation By Sushanta

& Team 1

MEMORY

Narula Institute of Technology

Department of Management


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8/16/2011 Presentation By Moyukh & Team 2

SEE SIMILARITIES?


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8/16/2011Presentation By Zeeshan

& Team 4

Sensory Memory Store

Sensory

InputSensory

Memory

Function - holds information long

enough to be processed for basic

physical characteristics

Capacity - large

can hold many items at once

Duration - very brief retention of

images

.3 sec for visual info

2 sec for auditory info


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8/16/2011Presentation By Abhijit

& Team 5


Sensory

InputSensory

Memory

Divided into two subtypes:

iconic memory - visual information

echoic memory - auditoryinformation

Visual or iconic memory was

discovered by Sperling in 1960


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& Team 6

Sperlings Experiment

Presented matrix of letters for 1/20 seconds

Report as many letters as possible

Subjects recall only half of the letters

Was this because subjects didnt haveenough time to view entire matrix? No

How did Sperling know this?


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Sperlings Experiment

Sperling showed people can see and recall

ALL the letters momentarily

Sounded low, medium or high tone

immediately after matrix disappeared

tone signaled 1 row to report

recall was almost perfect

Memory for image fades after 1/3

seconds or so, making report of entiredisplay hard to do

High

Medium

Low


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8/16/2011Presentation By Debhraj

& Team 8

What Letters Do You See?

..


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8/16/2011Presentation By Zeeshan

& Team 9


..


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8/16/2011Presentation By Abhijit

& Team 10

..



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& Team 11

..



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Sensory

InputSensory

Memory

Sensory memory forms

automatically, without attention orinterpretation

Attention is needed to transfer

information to working memory


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8/16/2011Presentation By Debhraj& Team 13

Working Memory Store

Working or

Short-term

Memory

Sensory

Input

Sensory

Memory

Attention


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8/16/2011 Presentation By Zeeshan& Team 14

SHORTTERM MEMORY

Function - conscious processing of information

where information is actively worked on

Capacity - limited (holds 7 +/- 2 items)

Duration - brief storage (about 30 seconds) Code - often based on sound or speech even with visual inputs

Working or

Short-term

Memory

Sensory

Input

Sensory

Memory

Attention


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8/16/2011 Presentation By Sushanta& Team 16

SHORTTERM MEMORY

What is the number?8The number lasted in your working memory longer than

30 seconds

So, how were you able to remember the number?

579163


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Maintenance Rehearsal

Mental or verbal repetition of information

Allows information to remain in working memory longer

than the usual 30 seconds

SensoryMemory

Sensory

Input

Working or

Short-term

Memory

Attention


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8/16/2011 Presentation By Debhraj & Team 18

Petersons STM Task

Test of memory for 3-letter

nonsense syllables

Participants count backwards

for a few seconds, then recall Without rehearsal, memory

fades


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8/16/2011 Presentation By Zeeshan & Team 19

Working Memory Model

3 interacting components

Central

Executive

Phonological

Loop

Visuospatial

Sketch Pad


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8/16/2011 Presentation By Abhijit& Team 20

CHUNKING

Grouping small bits of information into larger units of

information

expands working memory load

Which is easier to remember?

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memory - by sushanta & team

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