Regional Cerebral Blood Flow During Sign Language Perception: Deaf - PowerPoint PPT Presentation

Loading...

PPT – Regional Cerebral Blood Flow During Sign Language Perception: Deaf PowerPoint presentation | free to download - id: 113acd-YjZmM



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Regional Cerebral Blood Flow During Sign Language Perception: Deaf

Description:

Brain activation: deaf group:parieto-occipital lobe; hearing signers temporal lobe ... enhanced right hemisphere parieto-occipital activation = an effect of a lack of ... – PowerPoint PPT presentation

Number of Views:53
Avg rating:3.0/5.0
Slides: 9
Provided by: med756
Learn more at: http://www.uni-bielefeld.de
Category:

less

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

Title: Regional Cerebral Blood Flow During Sign Language Perception: Deaf


1
Regional Cerebral Blood Flow During Sign Language
PerceptionDeaf Hearing Subjects with Deaf
Parents Compared
B. Söderfeldt, J. Rönnberg J. Risberg
  • Jagoda Konarska, Maria Bak, Marina Kaneva Alina
    Fesenko

2
Overview
  • I. Introduction
  • II. Goals and Study
  • III. Subjects
  • IV. Method
  • V. Results

3
Introduction
  • cerebral activation
  • deaf and hearing subjects
  • with deaf parents
  • deaf group depended more on spatial components

4
Goals and Study
  • find out similarities between signed and spoken
    language
  • both seem to activate much the same regions in
    the brain
  • more occipital activation in sign language
  • sign language seems to involve the right
    hemisphere?
  • study compare sign language lateralization and
    localization between hearing and deaf children of
    deaf parents

5
Subjects
  • 6 deaf subjects 9 hearing subject
  • all had deaf parents
  • no psychiatric history
  • Swedish sign language as mother tongue
  • all were right-handed

6
Method
  • high resolution rCBF
  • Swedish novel was translated into Swedish sign
    language
  • presented by a deaf man signing
  • instruction focus on story
  • retell story
  • Activation was compared during sign language and
    rest

7
Results
  • both groups - a high bifrontal activation during
    rest
  • Brain activation deaf groupparieto-occipital
    lobe hearing signers temporal lobe
  • Conclusion deafness leads to enhanced right
    hemisphere activation
  • enhanced right hemisphere parieto-occipital
    activation an effect of a lack of auditory
    stimulation early learning of a visual-spatial
    language

8
Bibliography
  • Söderfeldt, B., Rönnberg, J. J. Risberg. 1994.
    Regional Cerebral Blood Flow During Sign Language
    Perception Deaf Hearing Subjects with Deaf
    Parents Compared. In Sign Language Studies,
    199-207.
About PowerShow.com