Title: "Cognitive Predictors of Vocoded Speech Perception"
Speaker: Arifi Waked, UMD HESP
Date: Wednesday, April 30; 12-1 PM
Room: LeFrak Hall Room 0135
Abstract:
Variability has consistently been observed in the speech perception abilities of cochlear-implant users. While much of this variability can be accounted for by demographic factors, it has been estimated that perhaps 20% can be accounted for by cognitive factors, particularly those related to working memory. In this study, we examined the relationship between various cognitive factors and perception of noise-vocoded single words and sentences, presented in conditions of both quiet and noise. Twenty normally-hearing, typically developing adults were assessed on measures of working memory, sustained attention, and inhibition, as well as perception of closed-set single words and open-set sentences. Results indicate that sustained attention plays a role in understanding vocoded single words presented in quiet. Results also indicate that processing speed plays a significant role in perception of both vocoded single words and sentences presented in noise. Results suggest that training paradigms designed to improve processing speed and sustained attention may be beneficial to cochlear-implant users, and may help improve speech perception of degraded input.
