1 / 35

Perceptual Weighting Strategies in Normal Hearing and Hearing Impaired Children and Adults

Perceptual Weighting Strategies in Normal Hearing and Hearing Impaired Children and Adults. Andrea Pittman, Ph.D. Patricia Stelmachowicz, Ph.D. Dawna Lewis, M.A. Brenda Hoover, M.A. Boys Town National Research Hospital. Funded by a grant from NIH. Normal-Hearing Adults.

ulmer
Télécharger la présentation

Perceptual Weighting Strategies in Normal Hearing and Hearing Impaired Children and Adults

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Perceptual Weighting Strategies in Normal Hearing and Hearing Impaired Children and Adults Andrea Pittman, Ph.D. Patricia Stelmachowicz, Ph.D. Dawna Lewis, M.A. Brenda Hoover, M.A. Boys Town National Research Hospital Funded by a grant from NIH

  2. Normal-Hearing Adults Normal-Hearing Children Hearing-Impaired Adults Hearing-Impaired Children How do hearing-impaired children learn to perceive speech? • Children: less experience perceiving speech • Hearing impaired: receive reduced speech signal Experience Hearing

  3. S A How do hearing-impaired children learn to perceive speech?

  4. Subjects Normal Hearing • Adults(mean = 28 yrs, 20-44) 20 Children(mean = 6:8 yrs, 5-7) Hearing Impaired 10 Adults(mean = 59 yrs, 49-66) 10 Children(mean = 7:8 yrs, 5-10)

  5. Subjects Normal Hearing • Adults(mean = 28 yrs, 20-44) 20 Children(mean = 6:8 yrs, 5-7) Hearing Impaired 10 Adults(mean = 59 yrs, 49-66) 10 Children(mean = 7:8 yrs, 5-10)

  6. 4 words CVC 2 vowels 2 fricatives Stimuli Sock Sack Shack Shock

  7. 2 conditions w/ transition w/o transition Stimuli Sock Sack Shack Shock

  8. 2 conditions w/ transition w/o transition Stimuli Sock Sack Shack Shock

  9. 2 conditions w/ transition w/o transition Stimuli w/ transition w/o transition

  10. 2 segments fricative vowel Stimuli Sock Sack Shack Shock

  11. 2 segments fricative vowel Stimuli Sock Sack Shack Shock

  12. 5 levels 5 to 12 dB steps 20 to 48 dB range Stimuli Level (dB SPL) Frequency (Hz)

  13. 5 levels 5 to 12 dB steps 20 to 48 dB range Stimuli Level (dB SPL) Frequency (Hz)

  14. 5 levels 5 to 12 dB steps 20 to 48 dB range Stimuli Level (dB SPL) Frequency (Hz)

  15. 5 levels 5 to 12 dB steps 20 to 48 dB range Stimuli Level (dB SPL) Frequency (Hz)

  16. 5 levels 5 to 12 dB steps 20 to 48 dB range Stimuli Level (dB SPL) Frequency (Hz)

  17. 5 levels 5 to 12 dB steps 20 to 48 dB range Stimuli Level (dB SPL) Frequency (Hz)

  18. 5 levels 5 to 12 dB steps 20 to 48 dB range Stimuli Level (dB SPL) Frequency (Hz)

  19. 5 levels 5 to 12 dB steps 20 to 48 dB range Stimuli Level (dB SPL) Frequency (Hz)

  20. 5 levels 5 to 12 dB steps 20 to 48 dB range Stimuli Level (dB SPL) Frequency (Hz)

  21. 5 levels 5 to 12 dB steps 20 to 48 dB range Stimuli Level (dB SPL) Frequency (Hz)

  22. Performance Short-Term Audibility Short-Term Audibility

  23. Short-Term Audibility Performance Short-Term Audibility

  24. Short-Term Audibility Performance Short-Term Audibility

  25. Short-Term Audibility Performance Short-Term Audibility

  26. Short-Term Audibility Performance Short-Term Audibility

  27. Short-Term Audibility Performance Short-Term Audibility

  28. Performance Short-Term Audibility

  29. Performance Short-Term Audibility

  30. Results

  31. w/ transition w/o transition Normal-Hearing Adults Performance Short-Term Audibility

  32. Normal-Hearing Adults Performance Short-Term Audibility w/ transition w/o transition

  33. Normal-Hearing Adults Normal-Hearing Children Performance Performance Short-Term Audibility Short-Term Audibility Hearing-Impaired Adults w/ transition Performance w/o transition Short-Term Audibility Hearing-Impaired Children Performance Short-Term Audibility

  34. Normal-Hearing Adults Normal-Hearing Children Performance Performance Short-Term Audibility Short-Term Audibility Hearing-Impaired Adults Hearing-Impaired Children w/ transition Performance Performance w/o transition Short-Term Audibility Short-Term Audibility

  35. Experience Overall performance and use of the transition increased with age Conclusions • Hearing • HI adults showed significantly poorer performance when the transition was removed Suggests that the transition was more important to perception in this group than in NH listeners • HI children showed no difference in performance for words with and without a transition

More Related