A Speechreading Expert The Case of MM Research Article
Research Article  |   February 01, 1999
A Speechreading Expert
 
Author Affiliations & Notes
  • Jerker Rönnberg
    Linköping University Sweden
  • Jan Andersson
    Linköping University Sweden
  • Stefan Samuelsson
    Linköping University Sweden
  • Birgitta Söderfeldt
    Linköping University Sweden
  • Björn Lyxell
    Linköping University Sweden
  • Jarl Risberg
    Linköping University Sweden
  • Contact author: Dr. Jerker Rönnberg, Department of Education and Psychology, Linköping University, S-581 83 Linköping, Sweden.
Article Information
Audiologic / Aural Rehabilitation / Augmentative & Alternative Communication / Attention, Memory & Executive Functions / Hearing / Research Articles
Research Article   |   February 01, 1999
A Speechreading Expert
Journal of Speech, Language, and Hearing Research, February 1999, Vol. 42, 5-20. doi:10.1044/jslhr.4201.05
History: Received April 29, 1998 , Accepted August 31, 1998
 
Journal of Speech, Language, and Hearing Research, February 1999, Vol. 42, 5-20. doi:10.1044/jslhr.4201.05
History: Received April 29, 1998; Accepted August 31, 1998

The present case study of MM, who acquired both sign language and spoken language in her early preschool years—and then reached the normal milestones of development in each language—revealed that her speechreading expertise is associated with cognitive functions such as high working memory capacity and phonological skills. Her cognitive profile is in accord with previous case studies of extremely good speechreading skill. MM's enhanced right prefrontal/frontal cerebral blood flow activation during speechreading seems to be indicative of efficient visual scanning, but it is also possibly due to her strategy for phonological decoding of visual speech.

Acknowledgments
This research was supported by the Swedish Medical Research Council, the Swedish Council for Research in the Humanities and Social Sciences, the Craaford Foundation, and the Foundation Tysta Skolan. Finally, we thank Dr. Pichora-Fuller and two anonymous referees for constructive feedback.
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