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Interactions of speaking condition and auditory feedback on vowel production in postlingually deaf adults with cochlear implantsa)
a)This study was conducted in collaboration with the Dept. of Otolaryngology, University of Miami Medical School, Miami, Florida.
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10.1121/1.2710963
/content/asa/journal/jasa/121/6/10.1121/1.2710963
http://aip.metastore.ingenta.com/content/asa/journal/jasa/121/6/10.1121/1.2710963

Figures

Image of FIG. 1.
FIG. 1.

Schematic diagram of the functionality of the DIVA model.

Image of FIG. 2.
FIG. 2.

Percent correct vowel identification, by 13 cochlear implant users in three time samples: prior to activation of their implant speech processors; 1 month postactivation; and 1 year postactivation. Normative data from a group of control subjects with normal hearing are also shown (NH).

Image of FIG. 3.
FIG. 3.

Mean values of average vowel space (AVS) for control subjects (NH) and implant users in three speaking conditions (clear, normal, fast). For the latter group, data are shown at three time samples: prior to implantation (pre), 1 month (month) and 1 year (year) after implantation. Solid line: implant processor on; dotted line: implant processor off. Error bars are 0.5 standard error of the mean.

Image of FIG. 4.
FIG. 4.

Mean values of token dispersion in the M1 vs. M2 plane for the nine vowels elicited for controls (NH) and implant users in three speaking conditions (clear, normal, fast). Data for the implant users are presented at three time samples: prior to implantation (pre), 1 month (month) and 1 year (year) after implantation. Solid line: implant processor on; dotted line: implant processor off. Error bars are 0.5 standard error of the mean.

Image of FIG. 5.
FIG. 5.

Mean values of vowel duration for controls (NH) and implant users in three speaking conditions (clear, normal, fast). For the latter group, data are shown at three time samples: prior to implantation (pre), 1 month (month) and 1 year (year) after implantation. Solid line: implant processor on; dotted line: implant processor off. Error bars are 0.5 standard error of the mean.

Image of FIG. 6.
FIG. 6.

Schematic representations of the results for contrast distance and vowel dispersion in the present study for controls (upper left panel) and implant users at three time samples: pre-implant (upper right panel), 1 month postimplant with processor on (lower left panel) and 1 year postimplant with processor on (lower right panel). For the sake of clarity, only three vowels (V1, V2, V3) are represented. The size of the ellipses associated with the vowels represents dispersion, and the size of the double-headed arrows corresponds to the magnitude of contrast distance.

Tables

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TABLE I.

Predicted differences in the dependent variables as a function of the independent variables.

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TABLE II.

Characteristics of participants with cochlear implants.

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TABLE III.

Arrangement of recording materials and processor state at 1 month and 1 year following implantation for the implant users.

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TABLE IV.

Analysis of variances for ten controls (NH) and 13 implant users (CI) . Since there were no significant main effects or interactions of the gender variable for any of the dependent variables, this variable is not presented.

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/content/asa/journal/jasa/121/6/10.1121/1.2710963
2007-06-01
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Interactions of speaking condition and auditory feedback on vowel production in postlingually deaf adults with cochlear implantsa)
http://aip.metastore.ingenta.com/content/asa/journal/jasa/121/6/10.1121/1.2710963
10.1121/1.2710963
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