Effectiveness of training auditory in plasticity of central auditory system: case report

The objective of the study was to describe, by a case report, the effectiveness of auditory training in the modification of the central auditory system of a child with complaints of change of speech and language. It is a retrospective study, through case report, of a child of the male gender of 02 years and 06 months with complaints of change of speech and / or language. In the evaluation of auditory evoked potential of encephalic stem observed presence of electrophysiological waves I, III and V with absolute latency and interpeak intervals within normal in the right ear and presence of waves I, III and V with absolute latency of the wave V high and interpeak intervals III-V and I-V high in the left ear. The electrophysiological threshold was of 70dBNA to the right and 40dBNA to the left. After evaluation the child was referred for speech therapy based on informal auditory training. To monitor auditory function, after 06 months of speech therapy, the child was referred for reassessment hearing. In the reassessment hearing the results were presence of electrophysiological waves I, III and V with absolute latency and interpeak intervals within normal in both ears with electrophysiological thresholds of 20dBNA bilateral. The auditory training program was effective in rehabilitating of the auditory skills.本研究旨在通过病例报告，阐述听觉训练对存在言语语言改变主诉的儿童中枢听觉系统的改善效果。本研究为回顾性病例报告研究，研究对象为一名2岁6个月的男性儿童，其主诉为言语或/和语言功能异常改变。脑干听觉诱发电位检测结果显示：右侧耳可记录到I、III、V波，其绝对潜伏期及峰间期均处于正常参考范围；左侧耳可记录到I、III、V波，但V波绝对潜伏期延长，且III-V峰间期与I-V峰间期均高于正常参考范围。电生理阈值方面，右侧耳为70dBNA，左侧耳为40dBNA。评估完成后，该儿童被转诊接受基于非正式听觉训练的言语治疗。为监测听觉功能，在言语治疗开展6个月后，该儿童再次接受听力复查。复查结果显示：双耳均可记录到I、III、V波，其绝对潜伏期及峰间期均处于正常参考范围，双耳电生理阈值均为20dBNA。本研究表明，该听觉训练方案可有效改善听觉技能，实现听觉功能的康复。