Harvey Dillon

Sharon Cameron20
Helen Glyde13
Teresa Y C Ching13
Gitte Keidser12
20Sharon Cameron
13Helen Glyde
13Teresa Y C Ching
12Gitte Keidser
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PURPOSE The authors aimed to determine the predictability of speech intelligibility of people with different degrees of hearing loss from audibility and other factors. METHOD After a brief overview of why people with hearing loss have greater difficulty in understanding speech than people with normal hearing, the authors describe a study that was aimed to(More)
BACKGROUND With the advent of newborn hearing screening programs, the need to verify the fit of hearing aids in young infants has increased. The recording of cortical auditory evoked potentials (CAEPs) for this purpose is quite feasible, but rapid developmental changes that affect response morphology and the presence of electrophysiological noise can make(More)
The detection of adult cortical auditory evoked potentials (CAEPs) can be challenging when the stimulus is just audible. The effectiveness of a statistic compared with expert examiners in (1) detecting the presence of CAEPs when stimuli were present, and (2) reporting the absence of CAEPs when no stimuli were present, was investigated. CAEPs recorded from(More)
OBJECTIVES A prototype hearing aid with trainable amplification parameters (compression threshold, gain below the compression threshold, compression ratio, and noise suppression strength) was evaluated to answer the following research questions: (1) In everyday listening situations, do aid users prefer amplification parameters that were a result of training(More)
OBJECTIVES Difficulty in understanding speech in background noise is frequently reported by hearing-impaired people despite well-fitted amplification. Understanding speech in the presence of background noise involves segregating the various auditory stimuli into distinct streams using cues such as pitch characteristics, spatial location of speakers, and(More)
Finding ways to evaluate the success of hearing aid fittings in young infants has increased in importance with the implementation of hearing screening programs. Cortical auditory evoked potentials (CAEP) can be recorded in infants and provides evidence for speech detection at the cortical level. The validity of this technique as a tool of hearing aid(More)
OBJECTIVE To address the question of whether, on a population level, early detection and amplification improve outcomes of children with hearing impairment. DESIGN All families of children who were born between 2002 and 2007, and who presented for hearing services below 3 years of age at Australian Hearing pediatric centers in New South Wales, Victoria,(More)
OBJECTIVE The aim was to investigate detection and differentiation of obligatory cortical auditory evoked potentials (CAEPs) in normal-hearing listeners with and without a simulated conductive hearing impairment using the HEARLab™. DESIGN Sound field CAEPs were obtained from 24 normal-hearing adults, with and without earplugs, using three natural speech(More)
Difficulty understanding speech in background noise, even with amplification to restore audibility, is a common problem for hearing-impaired individuals and is especially frequent in older adults. Despite the debilitating nature of the problem the cause is not yet completely clear. This review considers the role of spatial processing ability in(More)
This study examined the effect of variations in hearing-aid frequency response on real-life functional performance of children with severe to profound hearing loss. A cross-over design was used in a double-blind comparison of the NAL prescription with alternatives that produced either a BOOST or a CUT (6 dB/octave from 0.5 to 2 kHz), relative to the NAL(More)