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Influence of top-down and bottom-up interactions in the ability of discrimination contrasts acoustic in children and adults normal

Grant number: 15/14760-2
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): October 01, 2015
Effective date (End): September 30, 2017
Field of knowledge:Health Sciences - Speech Therapy
Principal Investigator:Caroline Nunes Rocha-Muniz
Grantee:Luciana Mizue Tanaka
Host Institution: Faculdade de Medicina (FM). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

Speech is a complex process involving sensory and cortical activities. Auditory processing is closely related to speech and involves skills such as selective attention, sound detection, discrimination, location, recognition, and memory. Despite the auditory processing being widely studied, there is still no consensus on the influence of cognitive tasks (top-down interactions) in auditory sensory tasks (bottom-up). In addition, the maturing issues and their relation to the performance of these tasks also differ between surveys. Thus, the present study aims to investigate the influence of top-down interactions discrimination and identification of acoustic contrasts of speech stimuli (bottom-up task) and directed attention (top-down task) in the dichotic listening test according to the vowel in adults and children. In addition, this study aims to check for the influence of maturation in both the performance and for the effect of laterality.

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