Effects of Auditory Training on Speech Recognition in Children with Single-Sided Deafness and Cochlea Implants Using...

Treating individuals with single-sided deafness (SSD) with a cochlear implant (CI) offers significant benefits for speech perception in complex spatial listening environments. After implantation, training without involvement of the normal-hearing ear is essential. Therefore, the AudioLink streaming device (MED-EL GmbH, Austria) can be used to connect the externally worn audio processor to media devices; thus, the auditory stimuli are directly streamed to the implanted ear. The aim was to test whether children with SSD, aged 5-12 years, accept this training method and whether auditory training, streamed directly via AudioLink using the Tiptoi device (Ravensburger GmbH., Ravensburg, Germany), improves speech recognition. A total of 12 children with SSD and implanted with a CI received Tiptoi training via AudioLink and were asked to practice daily for 10 min over a period of one month. All participants completed the training. The measurements employed to assess improvement included speech audiometry, speech, spatial, and quality of hearing scale for parents (SSQ P), and specially designed tasks crafted for this study. Daily training of 9.93 min was reported. The word recognition score (WRS) at 65 dB and 80 dB in aided condition significantly improved and the WRS streamed via AudioLink was significantly better after training. The speech, spatial, and qualities of hearing scale for parents (SSQ P questionnaire) showed significant improvement in the dimension of quality of hearing and overall gain. The outcomes of the Tiptoi tasks resulted in a significant benefit in both categories of the "recognition of sounds" and "understanding of sentences". The results are very encouraging and do not only show the positive uptake of daily training at home but also how this resulted in a significant improvement in subjective and objective measures for this rather short training period of one month only.