Xueqing Chen

Capital Medical University, Peping, Beijing, China

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Publications (26)15.04 Total impact

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    ABSTRACT: To provide a clinical reference by comparing the conventional 226 Hz tympanometry with 1000 Hz tympanometry in two groups of young children with otitis media effusion evidenced by CT scan.
    05/2014; 28(10):701-4.
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    ABSTRACT: To investigate the lexical tone perception and quality of life of Nurotron cochlear implant users. Forty-nine adult cochlear implant users participated in this study. Mandarin tone identification test developed by Beijing Institute of Otolaryngology was used to evaluate the tone perception. Nijmegen cochlear im plantation questionnaire (NCIQ) was administered to quantify the quality of life. (1) The average scores of tone perception in quiet was 67.26%. The tone perception rates under quiet condition for all cochlear implant recipients were higher than the opportunity level. (2) The average scores of tone perception under noisy condition was 51.92%. Exc ept for two recipients, the tone perception rates under noise condition for the rest recipients were better than chance. (3) The confusion patterns of tone recognition showed that Tone 3 was the easiest tone to per ceive. (4) The postimplant scores for the total , basic sound perception, advanced sound perception, speech pro duction, self-esteem, activity and social interactions of NCIQ were 55.4, 72.4, 54.0, 63.4, 50.7, 47.3 and 44.7, respectively. The Nurotron cochlear implant users had the ability for lexical tone perception and had an improvement in quality of life after cochlear implantation.
    Lin chuang er bi yan hou ke za zhi = Journal of clinical otorhinolaryngology 02/2014; 28(4):232-4, 237.
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    ABSTRACT: The aim of this study is to survey and compare the development of auditory skills in young children with Mondini dysplasia and profoundly-deaf young children with radiologically normal inner ears over a period of 3 years after cochlear implantation. A total of 545 young children (age 7 to 36 months) with prelingual, severe to profound hearing loss participated in this study. All children received cochlear implantation. Based on whether or not there was a Mondini dysplasia as diagnosed with CT scanning, the subjects were divided into 2 groups: (A) 514 young children with radiologically normal inner ears and (B) 31 young children with Mondini dysplasia. The Infant-Toddler Meaningful Auditory Integration Scale (IT-MAIS) was used to assess the children's auditory skills that include vocalization changes, spontaneous alerting to sounds in everyday living environments, and the ability to derive meaning from sounds. The assessment was performed prior to surgery and at 1, 3, 6, 9, 12, 24, and 36 months after implant device switch-on. The mean scores for overall auditory skills were not significantly different between groups A and B at pre-surgery, 1, 12, 24, and 36 months post-surgery, but were significantly different at 3, 6, and 9 months post-surgery. The mean scores for all auditory skills in children with Mondini dysplasia showed significant improvement over time. The mean scores for the three subcategories of auditory skills in children with Mondini dysplasia also showed significant differences at pre-surgery, 1, 3, 6, and 9 months, however, there were no significant differences at 12, 24, and 36 months. Overall, the auditory skills of young children with Mondini dysplasia developed rapidly after cochlear implantation, in a similar manner to that of young children with radiologically normal inner ears. Cochlear implantation is an effective intervention for young children with Mondini dysplasia.
    PLoS ONE 01/2014; 9(9):e108079. · 3.53 Impact Factor
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    ABSTRACT: Objective To evaluate the auditory and speech abilities in children with auditory neuropathy spectrum disorder (ANSD) after cochlear implantation (CI) and determine the role of age at implantation. Methods Ten children participated in this retrospective case series study. All children had evidence of ANSD. All subjects had no cochlear nerve deficiency on magnetic resonance imaging and had used the cochlear implants for a period of 12–84 months. We divided our children into two groups: children who underwent implantation before 24 months of age and children who underwent implantation after 24 months of age. Their auditory and speech abilities were evaluated using the following: behavioral audiometry, the Categories of Auditory Performance (CAP), the Meaningful Auditory Integration Scale (MAIS), the Infant-Toddler Meaningful Auditory Integration Scale (IT-MAIS), the Standard-Chinese version of the Monosyllabic Lexical Neighborhood Test (LNT), the Multisyllabic Lexical Neighborhood Test (MLNT), the Speech Intelligibility Rating (SIR) and the Meaningful Use of Speech Scale (MUSS). Results All children showed progress in their auditory and language abilities. The 4-frequency average hearing level (HL) (500 Hz, 1000 Hz, 2000 Hz and 4000 Hz) of aided hearing thresholds ranged from 17.5 to 57.5 dB HL. All children developed time-related auditory perception and speech skills. Scores of children with ANSD who received cochlear implants before 24 months tended to be better than those of children who received cochlear implants after 24 months. Seven children completed the Mandarin Lexical Neighborhood Test. Approximately half of the children showed improved open-set speech recognition. Conclusion Cochlear implantation is helpful for children with ANSD and may be a good optional treatment for many ANSD children. In addition, children with ANSD fitted with cochlear implants before 24 months tended to acquire auditory and speech skills better than children fitted with cochlear implants after 24 months.
    Auris Nasus Larynx. 01/2014;
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    ABSTRACT: The aim of this study is to evaluate the development of auditory performance and speech intelligibility within the first year after hearing aid fitting in children with moderate or severe hearing loss, investi gate the effects of hearing level on auditory performance and speech intelligibility and provide a clinical database for their hearing and speech habilitation. Twenty-nine children participated in this study, ranging in age at hearing aid fitting from 3 to 8 years old with a mean of 5. 6 years old. 19 were boys and 10 were girls. According to their hearing level, they were divided into two groups. 14 children were in group of moderate hearing loss (41-60 dB HL). 15 children were in group of severe hearing loss (61-80 dB HL). The categories of auditory performance (CAP) and speech intelligibility rating (SIR) were used to evaluate their auditory performance and speech intelligibility. The evaluation was performed before hearing aid fitting and 1, 3, 6, 9, 12 months after fitting. There was significant difference in mean score of CAP between group of moderate hearing loss and severe hearing loss before hearing aid fitting (P < 0.05). However, no significant differences were observed between these two groups at 1, 3, 6, 9, 12 months after fitting (P > 0.05). There was also significant difference in mean score of SIR between group of moderate hearing loss and severe hearing loss before hearing aid fitting (P < 0.05). How ever, no significant differences were also observed between these two groups at 1, 3, 6, 9, 12 months after fitting (P > 0.05). The mean scores of CAP for group of moderate hearing loss at 6, 9, 12 months after fitting were significantly superior in comparison with the score before hearing aid fitting (P < 0.05). The mean scores of SIR for group of moderate hearing loss at 6, 9, 12 months after fitting were significantly superior in comparison with the score before hearing aid fitting (P < 0.05); the mean score at 12 months after fitting was also significantly superior in comparison with the score at 1 month after fitting (P < 0.05). The mean scores of CAP for group of severe hearing loss at 3, 6, 9, 12 months after fitting were significantly superior in comparison with the score before hearing aid fitting (P < 0.05); the mean scores at 9,12 months after fitting were significantly superior in comparison with the score at 1 month after fitting (P < 0.05). The mean scores of SIR for group of severe hearing loss at 3, 6, 9, 12 months after fitting were significantly superior in comparison with the score before hearing aid fitting (P < 0.05); the mean scores at 6, 9, 12 months after fitting were also significantly superior in comparison with the score at 1 month after fitting (P < 0.05). Auditory performance and speech intelligibility in children with moderate or severe hearing loss improved significantly within the first year after hearing aid fitting. The de velopment followed different trajectory.
    Lin chuang er bi yan hou ke za zhi = Journal of clinical otorhinolaryngology 11/2013; 27(22):1234-8.
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    ABSTRACT: To investigate the law of auditory remodeling by studying the Cortical Auditory Evoked Potential in a group of post-lingually deaf adults in the early stage of the cochlear implant use. Ten post-lingually deaf adults implanted with PULSAR ci 100 of Medel device ranged from 19 to 52 years old with duration of deafness from 3 months to 23 years.were involved. Their P1-N1-P2 responses to /ba/ at around 60-70 dB SPi and open-set speech recognition scores of mono-syllabic words were recorded at 1. 3 aind 6 months after the switch-on of cochlear implants. Six out of 10 typical waveforms of Pl-N1-P2 were obtained. The other I were with atypical waveforms. The group with atypical waveform was characterized by long duration and early onset of deafness. There was no significant difference regarding either the amplitude or the latency of each peak at the 3 data collection time points. There was significant difference among the 3 data collection time points about the speech recognition scores with the highest score at the 6th month of switch on. There was no significant correlation between the peak of the CAEP and speech recognition score. In the first 6 months of cochlear implant use in the post-lingually deaf adults, the duration and the onset age of deafness played important role in respect of the presence and waveform morphology of the CAEPs. It needs at least 6 months for the central auditory system to make use of the audio input from the cochlear implant.
    Lin chuang er bi yan hou ke za zhi = Journal of clinical otorhinolaryngology 10/2013; 27(19):1068-72.
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    ABSTRACT: To establish music reference values for normal-hearing (NH) person in China, in order to give convenience in clinical application. The NH participant group included 39 subjects, of which 21 females and 18 males. Musical Sounds in Cochlear Implants test battery was used to assess the music perception ability for normal-hearing participants. The median pitch difference NH participants could discriminate for string was 2.5 semitones and 0.5 for flute. The average scores of rhythm discrimination, melody discrimination, chord discrimination, instrument identification and instrument number detection test were 86.1% (SD = 11.2), 76.5% (SD = 11.1), 75.6% (SD = 11.4), 89.9% (SD = 13.0) and 74.1% (SD = 20.7), respectively. The MuSIC test could be a test for music perception ability for China users and in further study the material that more suited for our culture should be added into it.
    Lin chuang er bi yan hou ke za zhi = Journal of clinical otorhinolaryngology 07/2013; 27(13):712-6.
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    ABSTRACT: Abstract Conclusion: This study indicates that Mandarin-speaking subjects acquire significant benefit from a cochlear implant (CI) and audio processor with the fine structure processing (FSP) coding strategy. It can take adult Mandarin CI users time to become accustomed to their CI and appreciate the benefits. Objectives: This study aimed to determine speech perception outcomes in Mandarin-speaking adults who received the FSP coding strategy. Methods: This was a prospective study. Ten adults who were implanted unilaterally with a PULSARCI(100), and received an OPUS 1 or OPUS 2 speech processor, were included in this study. The mean age at implantation was 31.1 years. We determined the benefit to postlingually deafened Mandarin-speaking adults with a severe to profound hearing loss using the tests: monosyllables in quiet, sentences in quiet and the Mandarin Hearing in Noise Test (MHINT). Tone perception was evaluated using a tone perception test. A visual analog scale (VAS) was used to score sound quality and ease of listening. Results: The results showed a significant improvement between first fitting and 6 months in all speech tests and in tone perception. The VAS scores showed a significant improvement over 6 months in sound quality and an immediate benefit in ease of listening.
    Acta oto-laryngologica 07/2013; 133(7):733-8. · 0.98 Impact Factor
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    ABSTRACT: Abstract Conclusions: As the hearing loss becomes more severe, the tone recognition performance of hearing-impaired listeners gradually but slowly reduces. The tone recognition performance of cochlear implant listeners is below or close to the performance of severely hearing-impaired listeners. Objectives: The present study aimed to investigate the Mandarin lexical tone recognition performance of sensorineural hearing-impaired listeners and post-lingually deafened cochlear implant users. Methods: Tone recognition performance was measured for 30 normal-hearing subjects, 41sensorineural hearing-impaired listeners, and 12 cochlear implant users using 128 monosyllables recorded by a male and a female adult native Mandarin speaker. Results: The results indicated that the accuracy of tone recognition was 99.3%, 96.4%, 93.7%, 83.9%, and 81.0% for the normal-hearing, moderate, moderate to severe, severely hearing-impaired, and cochlear implant subjects, respectively. For the hearing-impaired subjects, a significantly negative correlation was observed between tone recognition performance and the audiometric hearing thresholds. For cochlear implant subjects, Tone 3 was the easiest one to perceive and Tone 2 was the hardest one to perceive. They tended to misperceive Tone 1 as Tone 2, and misperceive Tone 2 as Tones 1 and 3.
    Acta oto-laryngologica 01/2013; 133(1):47-54. · 0.98 Impact Factor
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    ABSTRACT: The purpose of this study is to investigate the effects of hearing level on auditory performance in infants with hearing aids and provide a clinical database for their hearing and speech habilitation. A total of 32 infants with prelingual hearing loss participated in this study, ranging in age at hearing aid fitting from 3 to 34 months with a mean of 16 months. According to their hearing level, they were divided into three groups. Infants in group A were with moderate hearing loss (41-60 dB HL). Infants in group B were with severe hearing loss (61-80 dB HL). Infants in group C were with profound hearing loss (>81 dB HL). The infant-toddler meaningful auditory integration scale (IT-MAIS) was used to evaluate their auditory performance. The evaluation was performed before hearing aid fitting and 1, 3, 6, 9, 12 months after fitting. The mean scores of auditory performance showed significant improvements with time of hearing aid use for the three groups of infants (P < 0.05). The mean score of auditory performance for group A at 3 months after fitting was significantly superior in comparison with the scores before hearing aid fitting and at 1 month after fitting (P < 0.05). The mean score of auditory performance for group B at 6 months after fitting was significantly superior in comparison with the scores before hearing aid fitting and at 1, 3 months after fitting (P < 0.05). The mean score of auditory performance for group C at 9 months after fitting was significantly superior in comparison with the scores before hearing aid fitting and at 1, 3, 6 months after fitting (P < 0.05). There were no significant differences in mean scores between group A and B at each evaluating interval (P > 0.05). However, significant differences were observed between group A and C at 3, 6, 9, 12 months after fitting (P < 0.05). Significant differences were also shown between group B and C at 1, 3, 6, 9, 12 months after fitting (P < 0.05). Auditory performance of infants with prelingual hearing loss developed significantly with the use of hearing aids within the first year after fitting. The degree of hearing loss in infants had significant influence on the development of auditory performance.
    Lin chuang er bi yan hou ke za zhi = Journal of clinical otorhinolaryngology 12/2012; 26(23):1080-2.
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    ABSTRACT: Abstract Conclusion: The investigated experimental coding strategies significantly improved tone identification as compared with the participants' everyday audio processor settings. However, this benefit could not be attributed entirely to temporal fine structure stimulation but seems to be caused by decreasing the lower corner frequency of the filter bank. The 6 week habituation period used in this study might have been too short to allow the listeners to derive additional lexical information from the unfamiliar stimulation patterns. Objectives: To evaluate a cochlear implant coding strategy that explicitly conveys temporal fine structure information in the context of the tonal language Mandarin. Methods: The study was designed as a longitudinal, monocentric, prospective, controlled, and randomized cross-over study and included 12 postlingually deafened adults, who were experienced cochlear implant users. Two experimental coding strategies, one of which explicitly presents temporal fine structure information, were compared to the participants' personal TEMPO+ speech processors, which do not convey fine structure information. Results: Both experimental coding strategies improved tone identification by approximately 11 percentage points. This improvement was significant in the female speaker test. Sentence perception, as assessed with the M-HINT test, and quality of life scores were identical with all three coding strategies.
    Acta oto-laryngologica 10/2012; 132(11):1183-91. · 0.98 Impact Factor
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    ABSTRACT: The present study's aim was to assess the music perception ability for Chinese adult cochlear implant users and to investigate the correlation between music and Mandarin-Chinese lexical tone perception. Case-control study. Twenty normal-hearing and 21 adult cochlear implant users participated in the Musical Sounds in Cochlear Implants (MuSIC) perception test, including six objective and two subjective musical subtests. The comparison of music perception performance was made between normal-hearing and cochlear implant subjects. Sixteen of the 21 cochlear implant users also performed a tone identification test to investigate the correlation between music and tone perception. Cochlear implant users performed significantly worse than normal-hearing subjects on pitch discrimination, instrument identification, and instrument detection tests, whereas close to normal-hearing subjects on melody discrimination, chords discrimination, rhythm discrimination, and emotion and dissonance rating subtests. Lexical tone perception was significantly correlated with pitch discrimination, melody discrimination, and instrument identification tests. Duration of hearing aid use was found to be correlated with pitch discrimination ability of cochlear implant users. Chinese postlingually deafened cochlear implant users performed significantly poorer in pitch discrimination and timbre perception tasks than normal-hearing listeners. Lexical tone perception was found to be significantly correlated with music pitch perception, supporting the notion that tone and music perception may share a similar pitch perception mechanism.
    The Laryngoscope 02/2012; 122(6):1353-60. · 1.98 Impact Factor
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    ABSTRACT: The purpose of this study is to present normative data on the Chinese version of the international outcome inventory for hearing aids (IOI-HA) and examine the effectiveness of the hearing aid service. Cross-sectional study. The IOI-HA was administered in a paper and pencil format. The IOI-HA and self-designed questionnaire were mailed to 1502 experienced hearing-aid users who received their hearing aids from 14 hearing service centers in mainland China. In all, 1049 completed responses were included in the final analysis, and descriptive statistics were reported. The mean scores of each item of the IOI-HA ranged from 3.55 to 4.16. The IOI-HA scores showed a skewed distribution, with the maximum frequency for a score of 4 or 5. The total IOI-HA scores ranged from 9 to 35, and the mean total score was 26.3. The results compared favorably with the previous reports, and slightly higher than the published norms, indicating a high level of self-reported outcomes. CONCLUSIONES: The IOI-HA could be used as an effective tool to measure the general effectiveness of the hearing aid outcomes in China. The implementation of the IOI-HA is time-efficient, imposing little burden on the clinician and patient.
    International journal of audiology 10/2011; 50(10):673-8. · 1.34 Impact Factor
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    ABSTRACT: To evaluate preverbal communication skills in Chinese deaf children with cochlear implants, and to provide a basis for designing the habilitation program and establish a precursor for outcomes of habilitation. Thirty children with cochlear implants participated in this study with a mean age of 32 months. They all had used the cochlear implant system within 12 months with a mean of 5. 8 months. All the children were diagnosed with prelingual profound hearing loss before cochlear implantation. Tait video analysis was used to analyze and assess the preverbal communication skills including turn-taking, autonomy, eye contact and auditory awareness. All statistical analyses were performed using the SPSS 13.0 statistical software package with a criterion of statistical significance set at P < 0.05. The skill of turn-taking developed quickly within 12 months after cochlear implantation. The vocal turn developed in a similar pattern, and the score of gesture turn decreased slowly. The skills of autonomy and appropriate eye contact showed small changes over time at a lower level. The score of auditory awareness increased gradually after surgery. Children established a vocal/auditory mode of early communicative behavior following cochlear implantation. They preferred to communicate with others in a more vocal style. Video analysis is a useful tool to assess preverbal communication skills in deaf children with cochlear implants in China.
    Lin chuang er bi yan hou ke za zhi = Journal of clinical otorhinolaryngology 07/2011; 25(13):585-7.
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    ABSTRACT: The purpose of this study was to investigate the auditory performance of infants with isolated Large Vestibular Aqueduct Syndrome (LVAS) after cochlear implantation, compare their performance with those of infants with a normal inner ear, and establish a database of auditory development. 435 infants with congenital severe to profound hearing loss participated in this study. 62 infants in group A were diagnosed with isolated LVAS. 373 infants in group B had a normal inner ear. Infant-Toddler Meaningful Auditory Integration Scale (IT-MAIS) was used to evaluate the development of auditory skills. The mean scores for auditory ability showed no significant difference between groups A and B. The mean scores for the three different auditory skills increased significantly over time. The differences were statistically significant in mean scores among the three different auditory skills for group B. Auditory skills of infants with isolated LVAS developed rapidly after cochlear implantation, in a similar manner to those of infants with a normal inner ear. Cochlear implantation is an effective interventional approach and an established therapeutic option for infants with isolated LVAS.
    International journal of pediatric otorhinolaryngology 07/2011; 75(7):943-7. · 0.85 Impact Factor
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    ABSTRACT: The aim of this study was to develop comprehensive test material for Mandarin tone identification in noise for a male and a female talker. Additionally, the sensitivity index d' as a measure for the listeners' performance to identify individual tones was evaluated. The study followed a prospective design. The complete material comprises 72 loudness-balanced syllables in all 4 Mandarin tones. For a selection of 20 syllables, i.e. 80 test words, performance-versus-intensity functions were measured in spectrally matched noise for 16 normal-hearing participants. The average speech reception thresholds in noise were -12.9 dB for the male and -13.6 dB for the female talker recordings. The corresponding slopes were 8.6%/dB and 7.3%/dB. As a performance measure for individual tones, the proportion of correct responses to specific tones was substantially contaminated by response bias. The sensitivity index d', calculated according to detection theory, provided reasonable and unbiased performance versus intensity functions. The results firstly indicate that the material is homogenous enough for use as a speech test in clinical work and research. Secondly, to assess the discrimination performance for individual tones, d' values outperform the simple proportion of correct responses.
    International journal of audiology 03/2011; 50(3):155-63. · 1.34 Impact Factor
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    ABSTRACT: A current technology for detecting and controlling transient noise in hearing aids (AntiShock) was evaluated. The objective was to evaluate AntiShock on loudness control and whether results in negative changes in sound quality of speech, transient noise and environmental noise and provide implications for hearing aid fitting. Twenty-four subjects with sensorineural hearing loss participated in the study. In a single-blinded paradigm, the subjects were asked to rate loudness of transient noise and distortion of speech, transient noise and environmental noise with the AntiShock in both on and off conditions. (1) The percentage of the transient noise rated as soft, comfortable, loud, too loud was 3.0%, 72.7%, 22.9% and 1.4%, respectively. There were significant differences in mean scores of loudness perception among listening conditions and between genders by a Two-Way ANOVA, the P values were 0.009 and 0.001, respectively. (2) The percentage of the speech rated as mild distorted, understandable, clear and very clear was 2.5%, 30.6%, 32.9% and 34.0%, respectively. There were significant differences in mean scores of speech distortion under different listening conditions by an One-Way ANOVA (P < 0.01). (3) The percentage of the transient noise rated as mild distorted, clear and natural was 2.9% and 97.1%, respectively. No significant differences in mean scores of nature of transient noise was found under different listening conditions by an One-Way ANOVA (P > 0.05). (4) The percentage of the environmental noise rated as mild distorted, clear but soft, clear and natural was 0.4%, 0.8% and 98.8%, respectively. No significant differences in mean scores of nature of environmental noise was found between different listening conditions by an Independent-Samples T Test (P > 0.05). AntiShock showed positive effects on the loudness control of the transient noise. Quality of speech, transient noise and environmental noise were not impacted by AntiShock.
    Lin chuang er bi yan hou ke za zhi = Journal of clinical otorhinolaryngology 10/2010; 24(19):886-9.
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    ABSTRACT: Most of the infants demonstrated rapid improvement in the three different auditory skills within the first year after switch-on. Infants undergoing hearing aid trial and habilitation demonstrated a significant positive effect on the development of auditory skills in comparison with infants without trial and habilitation. This paper aims to evaluate the auditory performance of infants of different age at cochlear implantation, emphasize the importance of the hearing aid trial and habilitation before implant, and provide baseline data of auditory development. In all, 259 infants with prelingually profound hearing loss participated in this study. The Infant-Toddler Meaningful Auditory Integration Scale (IT-MAIS) was used to assess auditory skills in infants at different intervals. The mean scores for the auditory skills improved significantly over time. The mean scores of three skills for each group at each interval were significantly different. The mean scores of the auditory skills were significantly superior for infants undergoing hearing aid trial and habilitation in comparison with those of infants without hearing aid trial and habilitation.
    Acta oto-laryngologica 09/2009; 130(2):263-70. · 0.98 Impact Factor
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    ABSTRACT: To analyze the characteristics and development of auditory skill for infants with different age before and after cochlear implantation by using infant-toddler meaningful auditory integration scale (IT-MAIS) questionnaire, and provide the useful information for the criteria of candidacy for cochlear implantation in infants and habilitation after cochlear implantation. One hundred and thirty-nine prelingually infants with profound hearing loss were included in this study. According to the age at implantation, the infants were divided into 5 groups. They were group A ( < or =12 months), B (13-18 months), C (19-24 months), D (25-30 months) and E (31-36 months). Audiologists who were trained before this study used the IT-MAIS questionnaire to evaluate the auditory skill for all the infants and asked for the parents' or guardians' answers face to face. All the information about the infants spontaneous auditory behavioural responses was recorded in detail. The evaluation was performed before operation and 1 month, 3 months, 6 months, 12 months after switch-on. There were no significant differences in mean scores over time between different gender who received cochlear implants by Independent-Samples T Test (P > 0.05). There were no significant differences in mean scores over time among the 5 groups by Multiple Comparison in ANOVA (P > 0.05). The scores were increased with time and there were significant differences in mean scores among the different time before and after switch-on by Multiple Comparison in ANOVA (P < 0.05) for each group. The development of the auditory skill for infants followed the same rate in different gender. The auditory skill for infants after cochlear implantation developed rapidly regardless of age at implantation. Most of infants indicated rapid improvement in auditory skill within the first 6 months after switch-on, and then showed relative slow increase in the following 6 months.
    Lin chuang er bi yan hou ke za zhi = Journal of clinical otorhinolaryngology 03/2009; 23(4):148-50.
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    ABSTRACT: Lexical tone recognition tends to be poor in cochlear implant users. The HiResolution (HiRes) sound-processing strategy is designed to better preserve temporal fine structure, or the detailed envelope information, of an acoustic signal. The newer HiRes 120 strategy builds on HiRes by increasing the amount of potential spectral information delivered to the implant user. The purpose of this study was to examine lexical tone recognition in native Mandarin Chinese-speaking children with cochlear implants using the HiRes and HiRes 120 sound-processing strategies. Tone recognition performance was tested with HiRes at baseline and then after up to 6 mo of HiRes 120 experience in the same subjects. Twenty prelingually deafened, native Mandarin-speaking children, with ages ranging from 3.5 to 16.5 yr, participated. All children completed a computerized tone contrast test on three occasions: (1) using HiRes immediately before conversion to HiRes 120 (baseline), (2) 1 mo after conversion, and (3) 3 mo after conversion. Twelve of the 20 children also were tested 6 mo after conversion. In addition, the parents of 18 children completed a questionnaire at the 3-mo follow-up visit regarding the preference of sound-processing strategies and the children's experience related to various aspects of auditory perception and speech production using HiRes 120. As a group, no statistically significant differences were seen between the tone recognition scores using HiRes and HiRes 120. Individual scores showed great variability. Tone recognition performance ranged from chance (50% correct) to nearly perfect. Using the conventional HiRes strategy, 6 of the 20 children achieved high-level tone recognition performance (i.e., >or=90% correct), whereas 7 performed at a level not significantly different from chance (50-60% correct). At the final test, either 3 or 6 mo after conversion, all children achieved tone recognition performance with HiRes 120 that was equal to or better than that with HiRes, although some children's tone recognition performance was worse initially at the 1 or 3 mo follow-up intervals than at baseline. Eight of the 20 children showed statistically significant improvement in tone recognition performance with HiRes 120 on at least one of the follow-up tests. Age at implantation was correlated with tone recognition performance at all four test intervals. Parents of most of the children indicated that the children preferred HiRes 120 more than HiRes. As a group, HiRes 120 did not provide significantly improved lexical tone recognition compared to HiRes, at least throughout the length of the study (up to 6 mo). There were large individual differences in lexical tone recognition among the prelingually deafened, native Mandarin-speaking children with cochlear implants using either HiRes or HiRes 120. Six of the 20 children performed at or near ceiling in the baseline HiRes condition. Of the remainder, approximately half showed significantly better tone recognition when subsequently tested with HiRes 120, although the extent to which this improvement may be attributable to factors other than the change in processing strategy (e.g., general development) is unknown. The children who benefited most from HiRes 120 tended to be those who were implanted at younger ages.
    Ear and hearing 02/2009; 30(2):169-77. · 2.06 Impact Factor

Publication Stats

42 Citations
15.04 Total Impact Points

Institutions

  • 2009–2014
    • Capital Medical University
      • Department of Otorhinolaryngology Head and Neck Surgery
      Peping, Beijing, China
    • The Australian Society of Otolaryngology Head & Neck Surgery
      Evans Head, New South Wales, Australia