A Longitudinal Study Comparing Responses of Hearing-Impaired Infants to Pure Tones Using Visual Reinforcement and Play Audiometry

1987 ◽  
Vol 8 (3) ◽  
pp. 175-179 ◽  
Author(s):  
Carolyn B. Talbott
Keyword(s):  
Longitudinal Study ◽  
Hearing Impaired ◽  
Visual Reinforcement ◽  
Pure Tones

Frequency Discrimination of Short- versus Long-Duration Tones by Normal and Hearing-Impaired Listeners

1987 ◽  
Vol 30 (1) ◽  
pp. 28-36 ◽  
Author(s):  
Richard L. Freyman ◽  
David A. Nelson
Keyword(s):  
Short Duration ◽  
Discrimination Performance ◽  
Frequency Discrimination ◽  
Normal Hearing ◽  
Stimulus Level ◽  
Hearing Impaired ◽  
Long Duration ◽  
Sensorineural Hearing Impairment ◽  
Pure Tones ◽  
Low Levels

This investigation explored the effects of stimulus level on the frequency discrimination of long- and short-duration pure tones by 5 subjects with normal hearing and 7 with sensorineural hearing impairment. Frequency difference limens (DLs) were obtained as a function of signal intensity for 5-ms and 300-ms tones at 500, 1000, and 2000 Hz. The performance of most of the hearing-impaired subjects was poorer than normal for 300-ms tones, but not for 5-ms tones. This result was relatively independent of the stimulus sensation levels at which the data were compared. However, the current results also show an unexpected dependence of the frequency DL on the sensation level of short-duration tones. In several normal-hearing subjects, frequency discrimination performance for these short tones is poorer at moderately high levels than at low levels.

scholarly journals Age in months of conditioning for visual reinforcement audiometry in hearing-impaired infants: the effects of hearing levels and motor development

2017 ◽  
Vol 60 (1) ◽  
pp. 43-52
Author(s):  
Akifumi Tomizawa ◽  
Masahiro Rikitake ◽  
Hiroaki Fushiki ◽  
Hideaki Sakata ◽  
Kimitaka Kaga
Keyword(s):  
Motor Development ◽  
Hearing Impaired ◽  
Visual Reinforcement

A Comparison of Psychometric Functions for Detection in Normal-Hearing and Hearing-Impaired Listeners

1990 ◽  
Vol 33 (3) ◽  
pp. 433-439 ◽  
Author(s):  
Kathryn Hoberg Arehart ◽  
Edward M. Burns ◽  
Robert S. Schlauch
Keyword(s):  
Normal Hearing ◽  
Forced Choice ◽  
Hearing Impaired ◽  
Choice Procedure ◽  
Forced Choice Procedure ◽  
Pure Tones

Psychometric functions (PFD) for the detection of pure tones were obtained with a two-interval forced-choice procedure from a group of listeners with normal hearing and a group of listeners with sensorineural impairments of presumed cochlear origin. Five PFDs were obtained for each group at each of the four test frequencies (500, 2000, 4000, and 8000 Hz). The slopes of PFDs were abnormally steep in some of the hearing-impaired listeners, but were statistically significant only at 2000 Hz.

Stimulus Duration and Frequency Discrimination for Normal-Hearing and Hearing-Impaired Subjects

1984 ◽  
Vol 27 (2) ◽  
pp. 252-256 ◽  
Author(s):  
Joseph W. Hall ◽  
Elizabeth J. Wood
Keyword(s):  
Stimulus Duration ◽  
Temporal Integration ◽  
Detection Threshold ◽  
Frequency Discrimination ◽  
Normal Hearing ◽  
Hearing Impaired ◽  
Frequency Difference ◽  
Impaired Group ◽  
Overall Performance ◽  
Pure Tones

Frequency discrimination for 500- and 2000-Hz pure tones at durations of 5, 10, 20, 50, and 200 ms was determined for 10 normal-hearing and 10 cochlear-impaired listeners. Listeners from both groups demonstrated monotonic increases in frequency difference limens as stimulus duration decreased. The functions of the hearing-impaired listeners were parallel to those of the normal-hearing listeners for stimulus durations between 10 and 200 ms, but the overall performance of the hearing-impaired group was poorer than that of the normal-hearing group. The functions of many of the cochlear-impaired subjects were less steep than normal for the shortest durations tested (between 5 and l0 ms). There appeared to be no relation between temporal integration for frequency discrimination and temporal integration for detection threshold. The results are discussed in terms of processes of temporal integration and frequency selectivity.

Psychometric Functions for Loudness Discomfort and Most Comfortable Loudness Levels

1976 ◽  
Vol 19 (4) ◽  
pp. 613-627 ◽  
Author(s):  
Donald D. Dirks ◽  
Candace Kamm
Keyword(s):  
Lower Bound ◽  
Upper Bound ◽  
Sound Pressure ◽  
Hearing Impaired ◽  
Intense Stimulus ◽  
Adaptive Procedures ◽  
Pure Tones ◽  
The Difference ◽  
And Function ◽  
Comfortable Loudness

Adaptive procedures were used to determine psychometric functions for loudness discomfort level (LDL) and most comfortable loudness (MCL) for pure tones and speech using normal and hearing-impaired listeners. For the LDL, both groups demonstrated steeply rising functions with the 50% point at ∼ 100 dB SPL. The MCL data resulted in two functions, one (Function A) differentiating MCL from less intense stimulus levels and the second (Function B) differentiating between MCL and more intense levels. Function A may be considered a lower bound and Function B an upper bound for MCL. For the normal listeners, the difference between the functions at 50% response ranged from 9.9 to 19.9 dB depending upon the experimental condition. For the hearing-impaired subjects, this range was restricted to ∼ 4.5 dB, primarily as a result of a shift in Function A toward higher sound pressure levels.

Effects of Early Intervention on Hearing Impaired Children

1988 ◽  
Vol 55 (3) ◽  
pp. 222-228 ◽  
Author(s):  
Carol Reich Musselman ◽  
Anne Keeton Wilson ◽  
Peter H. Lindsay
Keyword(s):  
Longitudinal Study ◽  
Early Intervention ◽  
Social Development ◽  
Intervention Program ◽  
Spoken Language ◽  
Receptive Language ◽  
Hearing Impaired ◽  
Language Measure ◽  
Impaired Children ◽  
Hearing Impaired Children

A longitudinal study was conducted of 118 children with severe and profound hearing losses-Children were first tested when they were between 3 and 5 years and again in 3 or 4 years, using measures of receptive and expressive spoken language, receptive language in the child's primary educational modality, receptive and expressive mother-child communication, and social development. A multivariate design was used to investigate the effects of age of intervention, program intensity, and parent instruction on the children's linguistic and social development. Early intervention was associated with higher receptive language scores in the first, but not in the final year. Age of intervention was not related to any other language measure or the measure of social development. Consistent effects were not associated with program intensity or parent instruction.

Tone-on-Tone Masking in Subjects with Normal Hearing and with Sensorineural Hearing Loss

1981 ◽  
Vol 24 (4) ◽  
pp. 506-513 ◽  
Author(s):  
David Y. Chung
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
High Frequency ◽  
Hearing Threshold ◽  
Normal Subjects ◽  
Normal Hearing ◽  
Hearing Impaired ◽  
Sensorineural Hearing ◽  
Normal Case ◽  
Pure Tones

Quiet and masked thresholds were obtained from 5 subjects with normal hearing and 31 subjects with sensorineural hearing loss. Maskers were pure tones varying in frequency and intensity. The hearing-impaired subjects showed an abnormal spread of masking when masking was measured in terms of masked threshold. The abnormal spread of masking seems to be related to both the hearing threshold of the masker and the quiet threshold of the test signal. The notch due to detection of combination tones found on the high-frequency slope of masked audiograms of normal subjects (obscuring the actual extent to which the signal is masked) tends to accentuate the apparent abnormal upward spread of masking in the hearing-impaired subjects. The abnormal spread in the latter case is real, but comparison with the normal case must take the notch into account.

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