Electronic Thesis and Dissertation Repository


Master of Science


Health and Rehabilitation Sciences


Allen, Prudence


Children with developmental delays in auditory processing are more prone to experience difficulty in a classroom setting. Temporal cues are reported to be important for speech understanding in noisy and quiet conditions. One method to assess the ability to discriminate temporal cues is the amplitude modulation task. The purpose of this thesis was to examine amplitude modulation perception in listeners (children with auditory processing disorder (APD), typically developing children and adults) through an adaptive amplitude modulation task, estimation of psychometric functions for this task study and verification of the amplitude modulation task on a portable device (iPaas-based Application Suite). These three studies help improve our understanding of how sensitivity to temporal cues can affect the ability of listeners to perceive auditory information. Findings of poor amplitude modulation thresholds and slopes in children with APD may suggest the inefficiency of the auditory system in extracting temporal cues, potentially leading to poor speech recognition in noisy conditions.