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Auditory processing in hearing children of deaf signer adults: a casecontrol study

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Author(s):
Thaís Regina Monteiro
Total Authors: 1
Document type: Master's Dissertation
Press: São Paulo.
Institution: Universidade de São Paulo (USP). Faculdade de Medicina (FM/SBD)
Defense date:
Examining board members:
Eliane Schochat; Caroline Nunes Rocha Muniz; Liliane Desgualdo Pereira
Advisor: Eliane Schochat
Abstract

INTRODUCTION: The development of auditory skills is influenced by the sound stimuli to which children are exposed. Hearing children of deaf adults (CODAs) do not usually receive speaking stimuli in the same way as those of hearing adults. Given that sound information is important to the maturation process of the auditory system, it is pertinent to analyze the auditory skills of hearing children of deaf signer adults that were little exposed to oral language in their infancy. OBJECTIVE: To compare the auditory processing of CODAs that were little exposed to oral language in their early infancy with that of children of hearing adults. METHOD: A total of 60 children aged 5-10 years participated in the present study. All participants received normal ratings in their basic audiometric evaluation (audiometry, speech audiometry and imitanciometry). They were right-handed, without a history of systemic and/or neurological diseases that might affect the central nervous system, and without previous musical or second spoken language training. Two groups similar in age and sex were established: the Study Group (SG) comprised 30 children of deaf signer adults and the Control Group (CG) comprised 30 children of hearing adults. The tests selected were Pediatric Speech Intelligibility, Dichotic Digits, Pitch Pattern, Gaps-In-Noise, and Memory for Instrumental Sounds and Verbal Sounds. RESULTS: The SG performed significantly worse than the CG for all tests. Moreover, an analysis of the performance of the groups per age range revealed that for all age ranges assessed, the SG performance average was below that of the CG average; the performance difference between the groups was greater in younger children (5- and 6-year olds). CONCLUSIONS: It can be concluded that the low exposure to oral linguistic stimuli during infancy, associated with specific aspects of the experience of a large proportion of the CODAs studied, contributed to the low performance of the SG in the tests. These results indicate that ambient sound stimuli, especially those related to oral language, strongly influence auditory skills. This study highlights to the importance of the auditory follow-up of hearing CODAs, as well as to the need for exposing these children to oral linguistic sounds from a very early age (AU)

FAPESP's process: 15/01451-1 - Long latency auditory evoked potential (P300) in individuals with bipolar disorder: a case-control study; comparison with behavioral evaluation of central auditory processing
Grantee:Thaís Regina Monteiro
Support Opportunities: Scholarships in Brazil - Master