Abstract
ABSTRACT Objective: to analyze temporal ordering auditory ability in unilateral cochlear implant users with bimodal stimulation. Methods: the study included 15 unilateral cochlear implant users, six with bimodal stimulation and nine with exclusive cochlear implant and a control group consisting of 15 hearing individuals. Both groups underwent the standard duration and the standard frequency tests for temporal ordering auditory ability analysis. In the inferential analysis of the data, the nonparametric statistical tests Mann-Whitney and Kruskal-Wallis were used (p<0,05). Results: there was a significant difference in the performance of the standard frequency test, and subjects with bimodal stimulation presented a better performance than those with exclusive cochlear implants. The standard frequency test was associated with education and speech therapy. On the other hand, in the standard duration test, there was a relation with the implanted ear. The most frequent errors were discrimination for both temporal tests. Conclusion: bimodal stimulation, education and speech therapy influenced the performance of the frequency pattern test, while the implanted side influenced the performance of the duration pattern test.
Highlights
The sense of hearing is fundamental for the development of oral communication and, for human social interaction
Studies on temporal processing in Brazil have grown significantly in recent years; further expansion on the topic is still necessary in order to assist prevention, diagnosis, treatment and rehabilitation actions in various clinical populations[24]
Monitoring the aspects related to the PAC in Cochlear Implant (CI) users can help in the analysis of the performance of these subjects regarding the perception of speech and music, since the implanted device must be considered a component of the complex system that involves the auditory processing[3,25]
Summary
The sense of hearing is fundamental for the development of oral communication and, for human social interaction. The auditory system transmits environmental and speech sounds to the auditory cortex, where the information is processed to produce a perception of the signal[1]. Auditory alterations can seriously impact quality of life, affecting social, professional and psychological aspects of the individual. The electronic devices most used in hearing rehabilitation of individuals with hearing loss are the Individual Sound Amplification Device (ISAD) and the Cochlear Implant (CI)[2,3]. The use of hearing aids can benefit individuals with mild to profound hearing loss. As they are sound amplifiers, a sufficient cochlear reserve for good speech perception is required. Individuals who have a bilateral high-grade hearing impairment, and have no benefit from the use of hearing aids, are candidates for the use of CI4
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