BHS 49907 Memory and Amnesia - PowerPoint PPT Presentation

Loading...

PPT – BHS 49907 Memory and Amnesia PowerPoint presentation | free to download - id: 97baa-ODQ2O



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

BHS 49907 Memory and Amnesia

Description:

Mental scanning occurs as if seeing the actual object. Mental rotation ... Representational gravity memory for object positions is distorted toward the earth. ... – PowerPoint PPT presentation

Number of Views:70
Avg rating:3.0/5.0
Slides: 19
Provided by: NancyAl9
Learn more at: http://www.cpp.edu
Category:
Tags: bhs | amnesia | memory

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: BHS 49907 Memory and Amnesia


1
BHS 499-07 Memory and Amnesia
  • Working Memory

2
Baddeleys Model
  • Baddeley and Hitchs (1983) tripartite
    (three-part) model
  • Central executive
  • Control center of working memory
  • Two slave systems
  • Phonological loop -- processes verbal/acoustic
    information
  • Visuo-spatial sketchpad -- processes visual and
    spatial information

3
(No Transcript)
4
Phonological Loop
  • Components
  • Phonological store temporary store for speech
    input
  • Articulatory loop where subvocal rehearsal
    happens (our inner voice)
  • Word length effect word span is smaller for
    long words than for short ones.

5
(No Transcript)
6
Other Phonological Effects
  • Articulatory suppression talking about
    something makes it difficult to remember
    something else.
  • Irrelevant speech effect background speech,
    even in another language, interferes with
    phonological processing.
  • Phonological similarity effect -- rhyming causes
    confusion at recall.

7
(No Transcript)
8
Lexicality Effect
  • Working memory can be affected by the contents of
    long term memory.
  • Memory spans are larger for lists of words than
    for non-words.
  • Long-term memory supports and enhances
    phonological processing and can even reverse some
    effects.
  • Rhyming in the context of songs or sentences
    helps, not hurts recall.

9
Visuo-Spatial Sketchpad
  • Operations of the visuo-spatial sketchpad
  • Mental scanning occurs as if seeing the actual
    object.
  • Mental rotation
  • Boundary extension people redraw images with
    boundaries not present in the original.
  • Dynamic memory interpretation of perceived
    motion.

10
(No Transcript)
11
(No Transcript)
12
Representational Effects
  • Representational momentum people extrapolate
    along the current trajectory to predict an
    objects final resting place.
  • Representational gravity memory for object
    positions is distorted toward the earth.
  • Representational friction objects moving in
    space slow down with friction.
  • Context affects these phenomena (church steeple
    vs rocket ship)

13
(No Transcript)
14
(No Transcript)
15
(No Transcript)
16
Central Executive
  • Allocates attentional resources to accomplish
    tasks.
  • A catch all explanation for cognition theories.
  • Distributes memory resources.
  • Memory can be improved by increasing arousal and
    thereby working memory resources.
  • More sleep, gum chewing increases arousal

17
Central Executive (Cont.)
  • Suppression used to keep irrelevant info out of
    working memory.
  • Dysexecutive syndrome disorder involving loss
    of central exec. function
  • Perseveration difficulty disengaging from one
    function and switching to another.
  • Distraction drifting thought processes that
    lock onto some environmental stimulus.

18
Span Tests
  • Simple one cognitive function at a time
  • Complex two components
  • Retention
  • Active processing more than STM
  • Reading
  • Comprehension
  • Operation
  • Spatial
About PowerShow.com