Monaural Envelope Correlation Perception in Listeners With Normal Hearing and Cochlear Impairment

1993 ◽  
Vol 36 (6) ◽  
pp. 1306-1314 ◽  
Author(s):  
Joseph W. Hall ◽  
John H. Grose
Keyword(s):  
Hearing Loss ◽  
Hearing Impairment ◽  
Poor Performance ◽  
Normal Hearing ◽  
Frequency Separation ◽  
Choice Procedure ◽  
Cochlear Hearing Loss ◽  
Improved Performance ◽  
Band Number ◽  
Envelope Correlation

Monaural envelope correlation perception was investigated in listeners with normal hearing and in listeners with cochlear hearing loss. Using a three-interval forced-choice procedure, the task of the subject was to identify the one interval out of three where the noise bands had correlated envelopes. Performance was determined as a function of the spectral separation between noise bands (Δf of 250, 500, or 1000 Hz) and the number of noise bands present (two, three, or five). Although individual differences existed, the results generally indicated better performance for the listeners with normal hearing when the Δf between bands was relatively small; however, there was no significant effect of hearing loss when the frequency separation between bands was greater than 250 Hz. The listeners with normal hearing generally showed decreased performance with increasing Δf, whereas the performance of many of the listeners with hearing impairment usually did not change appreciably with variation in Δf. Both groups of listeners showed improved performance with increasing number of noise bands present for the 500-Hz Δf. Only the listeners with hearing impairment showed significantly improved performance with increasing band number for the 250-Hz Δf; neither group showed improved performance with increasing band number for the 1000-Hz Δf. With five bands present, the performance of the listeners with hearing impairment did not differ significantly from that of the listeners with normal hearing, even for the 250-Hz Δf. It is possible that the poor performance of many of the listeners with hearing impairment when Δf is small may be due to relatively poor peripheral frequency analysis. It is difficult to determine the role of within-channel versus across-channel cues in the effects obtained.

Perceptual Organization of Sequential Stimuli in Listeners With Cochlear Hearing Loss

1996 ◽  
Vol 39 (6) ◽  
pp. 1149-1158 ◽  
Author(s):  
J. H. Grose ◽  
J. W. Hall
Keyword(s):  
Hearing Loss ◽  
Perceptual Organization ◽  
High Frequency ◽  
Recognition Task ◽  
Normal Hearing ◽  
Frequency Separation ◽  
Sequential Processing ◽  
Melody Recognition ◽  
Cochlear Hearing Loss ◽  
Two Measures

The perceptual organization of sequential stimuli presumably depends in part on the fidelity with which acoustic cues are encoded in the auditory system. The purpose of this study was to examine the effects of cochlear hearing loss on two measures of sequential processing that rely on spectro-temporal information. The results of a gap detection/discrimination task indicated that listeners with cochlear hearing loss exhibited particular difficulty discriminating gaps between tonal markers that were disparate in frequency. Performance improved when the disparate tones were embedded into a sequence of alternating low- and high-frequency tones that may have facilitated the perceptual parsing of the stimuli into separate auditory streams. However, performance for listeners with cochlear hearing loss was generally poorer than that of normal-hearing listeners and did not appear to be related to threshold in quiet or to frequency selectivity. The results of a melody recognition task that required a target melody to be "heard out" from simultaneous competing melodies also indicated generally poorer performance on the part of the listeners with hearing loss, although the pattern of results across all listeners was highly idiosyncratic. It was concluded that cochlear hearing loss deleteriously affects the processes underlying perceptual organization of sequential stimuli. In particular, perceptual organization in the presence of cochlear hearing loss appears to require a greater frequency separation between presumed auditory streams in comparison to normal-hearing listeners.

Effect of Age on Prediction of Hearing Loss with the Bivariate-Plotting Procedure

1984 ◽  
Vol 27 (1) ◽  
pp. 12-19 ◽  
Author(s):  
Shlomo Silman ◽  
Carol Ann Silverman ◽  
Theresa Showers ◽  
Stanley A. Gelfand
Keyword(s):  
Hearing Loss ◽  
Hearing Impairment ◽  
Predictive Accuracy ◽  
Normal Hearing ◽  
Hearing Impaired ◽  
Sensorineural Hearing ◽  
Line Segments ◽  
Bivariate Plot ◽  
Accuracy Of Prediction ◽  
Effect Of Age

The effect of age on accuracy of prediction of hearing impairment with the bivariate-plotting procedure was investigated in 72 normal-hearing subjects aged 20–69 years and in 86 sensorineural hearing-impaired subjects aged 20–83 years. The predictive accuracy with the bivariate-plotting procedure improved markedly when the data from subjects over 44 years of age were excluded from the bivariate plot. The predictive accuracy improved further when the construction of the line segments in the traditional bivariate plot was modified.

Speech Understanding Using Surgical Masks: A Problem in Health Care?

2008 ◽  
Vol 19 (09) ◽  
pp. 686-695 ◽  
Author(s):  
Lisa Lucks Mendel ◽  
Julie A. Gardino ◽  
Samuel R. Atcherson
Keyword(s):  
Health Care ◽  
Hearing Loss ◽  
Speech Perception ◽  
Hearing Impairment ◽  
Deleterious Effect ◽  
Normal Hearing ◽  
Speech Understanding ◽  
Speech Stimuli ◽  
Dental Office ◽  
Significant Difference

Background: Successful communication is necessary in health-care environments. Yet the presence of noise in hospitals, operating rooms, and dental offices may have a deleterious effect on health-care personnel and patients understanding messages accurately. The presence of a surgical mask and hearing loss may further affect speech perception. Purpose: To evaluate whether a surgical mask had an effect on speech understanding for listeners with normal hearing and hearing impairment when speech stimuli were administered in the presence or absence of dental office noise. Research Design: Participants were assigned to one of two groups based on hearing sensitivity in this quasi-experimental, cross-sectional study. Study Sample: A total of 31 adults participated in this study (1 talker, 15 listeners with normal hearing, and 15 with hearing impairment). The normal hearing group had thresholds of 25 dB HL or better at the octave frequencies from 250 through 8000 Hz while the hearing loss group had varying degrees and configurations of hearing loss with thresholds equal to or poorer than 25 dB HL for the same octave frequencies. Data Collection And Analysis: Selected lists from the Connected Speech Test (CST) were digitally recorded with and without a surgical mask present and then presented to the listeners in four conditions: without a mask in quiet, without a mask in noise, with a mask in quiet, and with a mask in noise. Results: A significant difference was found in the spectral analyses of the speech stimuli with and without the mask. The presence of a surgical mask, however, did not have a detrimental effect on speech understanding in either the normal-hearing or hearing-impaired groups. The dental office noise did have a significant effect on speech understanding for both groups. Conclusions: These findings suggest that the presence of a surgical mask did not negatively affect speech understanding. However, the presence of noise did have a deleterious effect on speech perception and warrants further attention in health-care environments.

Modulation Detection Interference in Listeners With Normal and Impaired Hearing

2002 ◽  
Vol 45 (2) ◽  
pp. 392-402 ◽  
Author(s):  
Sid P. Bacon ◽  
Jane M. Opie
Keyword(s):  
Hearing Loss ◽  
Normal Hearing ◽  
Individual Variability ◽  
Frequency Region ◽  
Unilateral Hearing Loss ◽  
Impaired Hearing ◽  
Sensation Level ◽  
Bilateral Hearing Loss ◽  
Cochlear Hearing Loss ◽  
Modulation Detection Interference

Listeners were asked to detect amplitude modulation (AM) of a target (or signal) carrier that was presented in isolation or in the presence of an additional (masker) carrier. The signal was modulated at a rate of 10 Hz, and the masker was unmodulated or was modulated at a rate of 2, 10, or 40 Hz. Nine listeners had normal hearing, 4 had a bilateral hearing loss, and 4 had a unilateral hearing loss; those with a unilateral loss were tested in both ears. The listeners with a hearing loss had normal hearing at 1 kHz and a 30- to 40-dB loss at 4 kHz. The carrier frequencies were 984 and 3952 Hz. In one set of conditions, the lower frequency carrier was the signal and the higher frequency carrier was the masker. In the other set, the reverse was true. For the impaired ears, the carriers were presented at 70 dB SPL. For the normal ears, either the carriers were both presented at 70 dB SPL or the higher frequency carrier was reduced to 40 dB SPL to simulate the lower sensation level experienced by the impaired ears. There was considerable individual variability in the results, and there was no clear effect of hearing loss. These results suggest that a mild, presumably cochlear hearing loss does not affect the ability to process AM in one frequency region in the presence of competing AM from another region.

Auditory Stroop Effects in Children With Hearing Impairment

1993 ◽  
Vol 36 (5) ◽  
pp. 1083-1096 ◽  
Author(s):  
Susan Jerger ◽  
Gayle Stout ◽  
Marilyn Kent ◽  
Elizabeth Albritton ◽  
Louise Loiselle ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Hearing Impairment ◽  
Speech Processing ◽  
Reaction Times ◽  
Semantic Content ◽  
Normal Hearing ◽  
Stroop Interference ◽  
Semantic Dimension ◽  
Speed Accuracy ◽  
The Voice

The accurate perception of speech involves the processing of multidimensional information. The aim of this study was to determine the influence of the semantic dimension on the processing of the auditory dimension of speech by children with hearing impairment. The processing interactions characterizing the semantic and auditory dimensions were assessed with a pediatric auditory Stroop task. The subjects, 20 children with hearing impairment and 60 children with normal hearing, were instructed to attend selectively to the voice-gender of speech targets while ignoring the semantic content. The type of target was manipulated to represent conflicting, neutral, and congruent relations between dimensions (e.g., the male voice saying "Mommy," "ice cream," or "Daddy" respectively). The normal-hearing listeners could not ignore the irrelevant semantic content. Instead, reaction times were slower to the conflict targets (Stroop interference) and faster to the congruent targets (Stroop congruency). The subjects with hearing impairment showed prominent Stroop congruency, but minimal Stroop interference. Reduced Stroop interference was not associated with chronological age, a speed-accuracy tradeoff, a non-neutral baseline, or relatively poorer discriminability of the word input. The present results suggest that the voice-gender and semantic dimensions of speech were not processed independently by these children, either those with or those without hearing loss. However, the to-be-ignored semantic dimension exerted a less consistent influence on the processing of the voice-gender dimension in the presence of childhood hearing loss. The overall pattern of results suggests that speech processing by children with hearing impairment is carried out in a less stimulus-bound manner.

scholarly journals Comparison of stacked tone-ABR and chirp ABR in individual with normal hearing and sensorineural hearing loss

2018 ◽  
Vol 4 (2) ◽  
pp. 550
Author(s):  
C. R. Vijay Bharath Reddy ◽  
M. Santhosh Reddy ◽  
K. Suresh
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Tone Burst ◽  
Cross Sectional Study ◽  
Normal Hearing ◽  
Sensorineural Hearing ◽  
Medical Sciences ◽  
Cross Sectional ◽  
Group I ◽  
Cochlear Hearing Loss

<p class="abstract"><strong>Background:</strong> There are no published studies that compared amplitude of stacked-Tone ABR and Chirp ABR in hearing impaired individuals with sensorineural hearing loss, which need to be investigated. Objective of the study was to know whether amplitude of standard chirp evoked ABR is same as tone burst evoked stacked ABR in individuals with normal hearing listeners and individuals with sensorineural hearing loss.</p><p class="abstract"><strong>Methods:</strong> Present hospital based cross sectional study was carried out at Malla Reddy Institute of Medical Sciences, from January 2016 to December 2016. Two groups of subjects were taken. Group I consisted of 20 ears (14 males and 6 females) with normal hearing. Group II consisted of 20 ears (11 females and 9 males) with cochlear hearing loss.  </p><p class="abstract"><strong>Results:</strong> Wave V Amplitude of stacked tone ABR was higher than Chirp stimuli evoked ABR wave V in both the groups. Amplitude of stacked tone ABR and chirp was smaller for individuals with sensorineural hearing loss than normal hearing. Between the 2 chirp stimuli, standard Chirp ABR amplitude was higher than modified Chirp in normal hearing listeners and individual with sensorineural hearing loss. For modified chirp in individuals with normal hearing and cochlear hearing loss. Latency obtained by standard chirp was longer compared to latency obtained by modified chirp, which is seen in both the groups.</p><p><strong>Conclusions:</strong> Chirp ABR may be opted over stacked tone ABR in neurological investigations due to its lesser variability in amplitude and shorter duration of testing. </p>

A summary of behavioral measures of cochlear gain and gain reduction in listeners with normal hearing or minimal cochlear hearing loss

2021 ◽  
Vol 149 (4) ◽  
pp. A106-A106
Author(s):  
Elizabeth A. Strickland ◽  
Miranda Skaggs ◽  
Anna Hopkins ◽  
Nicole Mielnicki ◽  
William B. Salloom ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Normal Hearing ◽  
Behavioral Measures ◽  
Cochlear Hearing Loss ◽  
Gain Reduction ◽  
Cochlear Gain

Frequency-Discrimination Ability of Hearing-Impaired Listeners

1981 ◽  
Vol 24 (1) ◽  
pp. 108-112 ◽  
Author(s):  
P. M. Zurek ◽  
C. Formby
Keyword(s):  
Hearing Loss ◽  
Hearing Impairment ◽  
Frequency Modulation ◽  
Hearing Threshold ◽  
Low Frequency ◽  
Frequency Discrimination ◽  
Normal Hearing ◽  
Hearing Impaired ◽  
Discrimination Ability ◽  
Hearing Sensitivity

Thresholds for frequency modulation were measured by an adaptive, two-alternative, forced-choice method with ten listeners: eight who showed varying degrees of sensorineural hearing impairment, and two with normal-hearing sensitivity. Results for test frequencies spaced at octave intervals between 125 and 4000 Hz showed that, relative to normal-hearing listeners, the ability of the hearing-impaired listeners to detect a sinusoidal frequency modulation: (1) is diminished above a certain level of hearing loss; and (2) is more disrupted for low-frequency tones than for high-frequency tones, given the same degree of hearing loss at the test frequency. The first finding is consistent with that of previous studies which show a general deterioration of frequency-discrimination ability associated with moderate, or worse, hearing loss. It is proposed that the second finding may be explained: 1) by differential impairment of the temporal and place mechanisms presumed to, encode pitch at the lower and higher frequencies, respectively; and/or, 2) for certain configurations of hearing loss, by the asymmetrical pattern of cochlear excitation that may lead to the underestimation, from measurements of threshold sensitivity, of hearing impairment for low-frequency tones and consequently to relatively large changes in frequency discrimination for small shifts in hearing threshold.

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