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. 2018 Apr 15:2018:4610592.
doi: 10.1155/2018/4610592. eCollection 2018.

The Benefits of Residual Hair Cell Function for Speech and Music Perception in Pediatric Bimodal Cochlear Implant Listeners

Xiaoting Cheng  1   2 , Yangwenyi Liu  1   2 , Bing Wang  1   2 , Yasheng Yuan  1   2 , John J Galvin 3rd  3 , Qian-Jie Fu  4 , Yilai Shu  1   2 , Bing Chen  1   2
Affiliations

The Benefits of Residual Hair Cell Function for Speech and Music Perception in Pediatric Bimodal Cochlear Implant Listeners

Xiaoting Cheng et al. Neural Plast. .

Abstract

Objective: The aim of this study was to investigate the benefits of residual hair cell function for speech and music perception in bimodal pediatric Mandarin-speaking cochlear implant (CI) listeners.

Design: Speech and music performance was measured in 35 Mandarin-speaking pediatric CI users for unilateral (CI-only) and bimodal listening. Mandarin speech perception was measured for vowels, consonants, lexical tones, and sentences in quiet. Music perception was measured for melodic contour identification (MCI).

Results: Combined electric and acoustic hearing significantly improved MCI and Mandarin tone recognition performance, relative to CI-only performance. For MCI, performance was significantly better with bimodal listening for all semitone spacing conditions (p < 0.05 in all cases). For tone recognition, bimodal performance was significantly better only for tone 2 (rising; p < 0.05). There were no significant differences between CI-only and CI + HA for vowel, consonant, or sentence recognition.

Conclusions: The results suggest that combined electric and acoustic hearing can significantly improve perception of music and Mandarin tones in pediatric Mandarin-speaking CI patients. Music and lexical tone perception depends strongly on pitch perception, and the contralateral acoustic hearing coming from residual hair cell function provided pitch cues that are generally not well preserved in electric hearing.

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Figures

Figure 1
Figure 1
Box plots of MCI scores for different semitone spacing and across all semitone spacing with the CI-only and with the CI + HA. The boxes show the 25th and 75th percentiles, the error bars show the 5th and 95th percentiles, the circles show outliers, the thin solid line shows the median, the thick solid line shows the mean, and the asterisks indicate significant differences between CI + HA and CI-only performance.
Figure 2
Figure 2
Box plots of tone recognition scores for the different lexical tones with the CI-only and with the CI + HA. The boxes show the 25th and 75th percentiles, the error bars show the 5th and 95th percentiles, the circles show outliers, the thin solid line shows the median, the thick solid line shows the mean, and the asterisks indicate significant differences between CI + HA and CI-only performance.
Figure 3
Figure 3
Box plots of vowel, consonant, tone (averaged across all 4 lexical tones), and sentence recognition scores with the CI-only and with the CI + HA. The boxes show the 25th and 75th percentiles, the error bars show the 5th and 95th percentiles, the circles show outliers, the thin solid line shows the median, the thick solid line shows the mean, and the asterisks indicate significant differences between CI + HA and CI-only performance.
See this image and copyright information in PMC

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