Simultaneous recordings of auditory brainstem and middle latency responses were obtained in both vertex-ipsilateral and vertex-contralateral derivations in 22 children, ages 8-12. For specific recording conditions, the latencies of middle latency responses differ significantly between children with and without learning disabilities, offering…

This paper presents results of 2 experiments examining effects of signal and masker uncertainty on 17 preschoolers' and 13 adults' detection of tonal signals in noise maskers. Effects of masker uncertainty significantly exceeded those of signal uncertainty. For most adults and some children, distracters produced higher thresholds and shallower…

Results of applying the electrophysiological measure of auditory long latency event-related potentials (P3 AERP) on 20 children with central auditory processing disorders before and after a structured treatment program found a significant decrease in P3 latency and a significant increase in P3 amplitude when compared with control subjects who had…

Sensitivity and specificity of static acoustic admittance (SAA) and tympanometric width (TW) were assessed for 116 pediatric patients. A statistically significant change in SAA was observed in immediate repeat measures. No significant change across the two sequential measures was observed for TW, peak pressure, or the estimate of ear canal volume.…

Repeated impedance measures were given over five weeks to 11 autistic, 20 learning-disabled, and 20 normal children. A repeated measures analysis of variance led to the conclusion that fluctuating, negative middle ear pressure greater than normal characterizes both autistic and learning-disabled children with the more abnormal pressures typical in…

Psychometric functions (PFD) for the detection of pure tones were obtained from 10 adolescent and young adult listeners with normal hearing and 10 adult listeners with sensorineural impairments of presumed cochlear origin. The slopes of the PFDs were abnormally steep in some of the hearing-impaired listeners but were statistically significant only…

The speech of four phonologically disordered children (ages four and five) with place and voice errors affecting initial stop consonants was described through phonological and acoustic analyses. The presence of productive phonological knowledge, as inferred from acoustic data, facilitated rapid generalization of correct production of the treated…

Long-term effects on auditory electrophysiology from early fluctuating hearing loss were studied in 27 children, aged 5 to 7 years, who had been evaluated originally in infancy. Findings suggested that early fluctuating hearing loss disrupts later auditory brain stem electrophysiology. (Author/DB)

The observed listening performances of 64 children (ages 7-11) with central auditory processing (CAP) disorders were evaluated. Data indicated wide variations in listening performance depending upon the listening conditions and listening functions being rated. Findings suggested that these children had difficulties in both stressful and ideal…

This study evaluated the ability of 30 normally developing children (ages 6-12) to report the perceived location of a stationary fused auditory image (FAI) or track a "moving" FAI. Although subjects performed at normal adult levels with the stationary sound measure, they exhibited a significant age-related trend with the moving sound…

This study evaluated whether listeners can distinguish human brainstem auditory evoked responses elicited by acoustic clicks from control waveforms obtained with no acoustic stimulus when the waveforms are presented auditorily. Detection performance for stimuli presented visually was slightly, but consistently, superior to that which occurred for…

Simultaneous auditory brainstem responses (ABRs) to click stimuli at 30 and 60 decibels were recorded from 16 full-term neonates with 4 different electrode arrays. Results indicated that ABR waveforms were morphologically similar to those recorded in adults. Waveform expression was variable with different electrode recording montages. (Author/DB)

Measures of transient evoked otoacoustic emission (TEOAE) reproducibility were obtained for 506 ears of 260 children and young adults. Findings suggest that TEOAEs provide useful information in routine clinical practice and may be employed to screen for the presence of hearing loss in children and young adults. (DB)

Frequency difference limens (DLFs) for pure tones were obtained over a wide range of frequencies and levels from 7 normal-hearing subjects and 16 ears of 12 listeners with sensorineural hearing losses. Results indicated that it is reasonable to use data from normal listeners' DLFs to evaluate DLFs from hearing-impaired listeners. (Author/JDD)

The study evaluated use of the Modified Power Law to predict permanent threshold shift (PTS) resulting from noise exposure in eight children with severe sensorineural hearing loss attributed to overamplification by hearing aids. The PTS tended to be flat across frequency with its course similar to PTS in persons with normal hearing exposed to…