Das Barshapriya, Chatterjee Indranil, Kumar Suman
AYJNIHH, ERC, Kolkata 700090, India.
ISRN Otolaryngol. 2013 Jul 18;2013:394604. doi: 10.1155/2013/394604. eCollection 2013.
Lack of proper auditory feedback in hearing-impaired subjects results in functional voice disorder. It is directly related to discoordination of intrinsic and extrinsic laryngeal muscles and disturbed contraction and relaxation of antagonistic muscles. A total of twenty children in the age range of 5-10 years were considered for the study. They were divided into two groups: normal hearing children and hearing aid user children. Results showed a significant difference in the vital capacity, maximum sustained phonation, and fast adduction abduction rate having equal variance for normal and hearing aid user children, respectively, but no significant difference was found in the peak flow value with being statistically significant. A reduced vital capacity in hearing aid user children suggests a limited use of the lung volume for speech production. It may be inferred from the study that the hearing aid user children have poor vocal proficiency which is reflected in their voice. The use of voicing component in hearing impaired subjects is seen due to improper auditory feedback. It was found that there was a significant difference in the vital capacity, maximum sustained phonation (MSP), and fast adduction abduction rate and no significant difference in the peak flow.
听力受损受试者缺乏适当的听觉反馈会导致功能性嗓音障碍。这与喉内肌和喉外肌的不协调以及拮抗肌收缩和舒张紊乱直接相关。本研究共纳入20名5至10岁的儿童。他们被分为两组：听力正常儿童和使用助听器的儿童。结果显示，肺活量、最大持续发声时间和快速内收外展率在听力正常儿童和使用助听器的儿童中分别具有相等的方差，存在显著差异，但峰值流量值无显著差异，具有统计学意义。使用助听器的儿童肺活量降低表明用于言语产生的肺容量有限。从该研究中可以推断，使用助听器的儿童嗓音能力较差，这在他们的声音中有所体现。由于听觉反馈不当，在听力受损受试者中可见发声成分的使用。研究发现，肺活量、最大持续发声时间（MSP）和快速内收外展率存在显著差异，而峰值流量无显著差异。
