Horizontal Sound Localization in Children With Bilateral Cochlear Implants: Effects of Auditory Experience and Age at Implantation

被引:24
作者
Asp, Filip [1 ,2 ]
Eskilsson, Gunnar [1 ]
Berninger, Erik [2 ,3 ]
机构
[1] Karolinska Univ Hosp, Dept Cochlear Implants, S-14186 Stockholm, Sweden
[2] Karolinska Inst, Dept Clin Sci Intervent & Technol, Stockholm, Sweden
[3] Karolinska Univ Hosp, Dept Audiol, S-14186 Stockholm, Sweden
关键词
Auditory experience; Bilateral cochlear implants; Children; Sound localization; ACUITY; BRAIN;
D O I
10.1097/MAO.0b013e318218cfbd
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Objective: To study sound localization performance in relation to auditory experience and age at implantation in children with bilateral cochlear implants. Study Design: Clinical study. Setting: University hospital. Patients: Sixty-two sequentially and 4 simultaneously bilaterally implanted children participated in this clinical sound localization study, at a median age of 5.6 years. They underwent sequential implantations at median ages of 1.9 and 4.2 years, respectively. Simultaneous implantations were performed at a median age of 2.0 years. Methods: Localization performance was measured with pink noise presented in random order from 5 loudspeakers in the frontal horizontal plane. Twenty-one subjects participated in repeated testing. Main Outcome Measure: Sound localization performance as quantified with an Error Index. Results: On group level, bilaterally implanted children pinpointed the sounding loudspeaker in the frontal horizontal plane. Sound localization performance improved significantly with increasing bilateral cochlear implant experience, as observed in the entire study group and intraindividually, albeit large interindividual variability existed. Regression analyses in the entire study group and in the sequentially implanted children did not reveal any relationship between sound localization performance and ages at first and second implantation, interimplant interval, or age. However, second implantation before 4 years of age contributed to faster sound localization improvement with increasing bilateral cochlear implant experience. Conclusion: Median perceived azimuths coincided with presented azimuths. We suggest that listening experience after bilateral cochlear implantation affects sound localization performance, possibly owing to the ongoing stimulus-driven maturation of the central auditory system. The amount of time listening with bilateral implants has methodologic implications on sound localization assessment in bilaterally implanted children.
引用
收藏
页码:558 / 564
页数:7
相关论文
共 16 条
[1]   Central auditory development in children with bilateral cochlear implants [J].
Bauer, Paul W. ;
Sharma, Anu ;
Martin, Kathryn ;
Dorman, Michael .
ARCHIVES OF OTOLARYNGOLOGY-HEAD & NECK SURGERY, 2006, 132 (10) :1133-1136
[2]   AUDITORY PERFORMANCE OF CHILDREN WITH UNILATERAL SENSORINEURAL HEARING-LOSS [J].
BESS, FH ;
THARPE, AM ;
GIBLER, AM .
EAR AND HEARING, 1986, 7 (01) :20-26
[3]   PROBLEM OF LOCALIZATION IN MEDIAN PLANE - EFFECT OF PINNAE CAVITY OCCLUSION [J].
GARDNER, MB ;
GARDNER, RS .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1973, 53 (02) :400-408
[4]   Experience With Bilateral Cochlear Implants Improves Sound Localization Acuity in Children [J].
Godar, Shelly P. ;
Litovsky, Ruth Y. .
OTOLOGY & NEUROTOLOGY, 2010, 31 (08) :1287-1292
[5]   Using the observer-based psychophysical procedure to assess localization acuity in toddlers who use bilateral cochlear implants [J].
Grieco-Calub, Tina M. ;
Litovsky, Ruth Y. ;
Werner, Lynne A. .
OTOLOGY & NEUROTOLOGY, 2008, 29 (02) :235-239
[6]   Sound Localization Skills in Children Who Use Bilateral Cochlear Implants and in Children With Normal Acoustic Hearing [J].
Grieco-Calub, Tina M. ;
Litovsky, Ruth Y. .
EAR AND HEARING, 2010, 31 (05) :645-656
[7]   Developmental plasticity in the human auditory brainstem [J].
Johnson, Krista L. ;
Nicol, Trent ;
Zecker, Steven G. ;
Kraus, Nina .
JOURNAL OF NEUROSCIENCE, 2008, 28 (15) :4000-4007
[8]   Sensitive periods in the development of the brain and behavior [J].
Knudsen, EI .
JOURNAL OF COGNITIVE NEUROSCIENCE, 2004, 16 (08) :1412-1425
[9]   Use of audiovisual information in speech perception by prelingually deaf children with cochlear implants: A first report [J].
Lachs, L ;
Pisoni, DB ;
Kirk, KI .
EAR AND HEARING, 2001, 22 (03) :236-251
[10]   Bilateral cochlear implants in children: Localization acuity measured with minimum audible angle [J].
Litovsky, RY ;
Johnstone, PM ;
Godar, S ;
Agrawal, S ;
Parkinson, A ;
Peters, R ;
Lake, J .
EAR AND HEARING, 2006, 27 (01) :43-59