Diplacusis Associated with Bilateral High Frequency Hearing Loss

1975 ◽  
Vol 18 (1) ◽  
pp. 5-16 ◽  
Author(s):  
Dale O. Robinson ◽  
John H. Gaeth
Keyword(s):  
Hearing Loss ◽  
Hard Of Hearing ◽  
High Frequency ◽  
Traditional Method ◽  
Constant Error ◽  
Normal Hearing ◽  
Psychophysical Method ◽  
High Frequency Hearing Loss ◽  
Standard Tone ◽  
Method Of Adjustment

Seven normal-hearing subjects and seven subjects with mild bilateral high-frequency sensorineural hearing losses were studied to explore the presence of diplacusis. A tracking procedure of psychophysical method of adjustment-limits was used for pitch judgments rather than the traditional method of adjustment. Each subject was presented with a standard 4000-Hz tone for 500 msec and alternately a variable tone for 500 msec. Subjects were instructed to adjust the variable tone upward or downward in pitch to bracket the pitch sensation of the standard tone. Two intra-aural and two interaural listening conditions were studied. A graphic representation of the subjects' adjustments of the variable tone was obtained for each condition. The resulting tracing indicated frequency correlates to the pitch adjustments from which excursion width and constant error were calculated. Some hard-of-hearing subjects and one normal-hearing subject were found to have diplacusis. Subjects with hearing losses exhibited larger excursion widths for intra- and interaural listening conditions. Subjects with hearing losses tended to be less consistent in pitch judgments than normal-hearing subjects. These findings were interpreted to mean that bilaterally symmetrical hearing losses increase the incidence of pitch aberrations.

"Minimal" High-Frequency Hearing Loss and School-Age Children

1997 ◽  
Vol 28 (1) ◽  
pp. 77-85 ◽  
Author(s):  
Carole E. Johnson ◽  
Ramona L. Stein ◽  
Alicia Broadway ◽  
Tamatha S. Markwalter
Keyword(s):  
Young Adults ◽  
Hearing Loss ◽  
High Frequency ◽  
Normal Hearing ◽  
School Age Children ◽  
Identification Performance ◽  
Vowel Identification ◽  
High Frequency Hearing Loss ◽  
Sequential Information ◽  
Confusion Matrices

The purpose of this study was to assess the consonant and vowel identification abilities of 12 children with minimal high-frequency hearing loss, 12 children with normal hearing, and 12 young adults with normal hearing using nonsense syllables recorded in a classroom with reverberation time of 0.7 s in two conditions of: (1) quiet and (2) noise (+13 dB S/N against a multi-talker babble). The young adults achieved significantly higher mean consonant and vowel identification scores than both groups of children. The children with normal hearing had significantly higher mean consonant identification scores in quiet than the children with minimal high-frequency hearing loss, but the groups performances did not differ in noise. Further, the two groups of children did not differ in vowel identification performance. Listeners’ responses to consonant stimuli were converted to confusion matrices and submitted to a sequential information analysis (SINFA, Wang & Bilger, 1973). The SINFA determined that the amount of information transmitted, both overall and for individual features, differed as a function of listener group ad listening condition.

scholarly journals The Relevance of the High Frequency Audiometry in Tinnitus Patients with Normal Hearing in Conventional Pure-Tone Audiometry

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Veronika Vielsmeier ◽  
Astrid Lehner ◽  
Jürgen Strutz ◽  
Thomas Steffens ◽  
Peter M. Kreuzer ◽  
...  
Keyword(s):  
Hearing Loss ◽  
High Frequency ◽  
Pure Tone ◽  
Pure Tone Audiometry ◽  
Normal Hearing ◽  
High Frequency Hearing Loss ◽  
Additional Information ◽  
Tinnitus Severity ◽  
Hearing Thresholds ◽  
High Frequency Audiometry

Objective. The majority of tinnitus patients suffer from hearing loss. But a subgroup of tinnitus patients show normal hearing thresholds in the conventional pure-tone audiometry (125 Hz–8 kHz). Here we explored whether the results of the high frequency audiometry (>8 kHz) provide relevant additional information in tinnitus patients with normal conventional audiometry by comparing those with normal and pathological high frequency audiometry with respect to their demographic and clinical characteristics.Subjects and Methods. From the database of the Tinnitus Clinic at Regensburg we identified 75 patients with normal hearing thresholds in the conventional pure-tone audiometry. We contrasted these patients with normal and pathological high-frequency audiogram and compared them with respect to gender, age, tinnitus severity, pitch, laterality and duration, comorbid symptoms and triggers for tinnitus onset.Results. Patients with pathological high frequency audiometry were significantly older and had higher scores on the tinnitus questionnaires in comparison to patients with normal high frequency audiometry. Furthermore, there was an association of high frequency audiometry with the laterality of tinnitus.Conclusion. In tinnitus patients with normal pure-tone audiometry the high frequency audiometry provides useful additional information. The association between tinnitus laterality and asymmetry of the high frequency audiometry suggests a potential causal role for the high frequency hearing loss in tinnitus etiopathogenesis.

The Effects of High-Frequency Hearing Loss on Low-Frequency Components of the Click-Evoked Otoacoustic Emission

2003 ◽  
Vol 14 (09) ◽  
pp. 525-533 ◽  
Author(s):  
Owen D. Murnane ◽  
John K. Kelly
Keyword(s):  
Hearing Loss ◽  
High Frequency ◽  
Low Frequency ◽  
Otoacoustic Emission ◽  
Normal Hearing ◽  
Group Differences ◽  
Basal Region ◽  
Significant Group ◽  
High Frequency Hearing Loss ◽  
Frequency Components

Click-evoked otoacoustic emission (CEOAE) input/output (I/O) functions were measured in ears with normal hearing and in ears with sensorineural hearing loss above 2000 Hz. The low- to midfrequency CEOAEs obtained from the ears with high-frequency hearing loss were significantly reduced in level compared to the CEOAEs obtained from the ears with normal hearing even though there were no significant group differences in the 250–2000 Hz pure-tone thresholds. The findings are discussed within the context of two hypotheses that explain the low- to midfrequency reduction in transient-evoked otoacoustic emission (TEOAE) magnitude: (1) subclinical damage to the more apical regions of the cochlea not detected by behavioral audiometry, or (2) trauma to the basal region of the cochlea that affects the generation of low-frequency emissions. It is proposed that localized damage at basal cochlear sites affects the generation of low- to midfrequency CEOAE energy.

Prevalence and Significance of High-Frequency Hearing Loss in Subjectively Normal-Hearing Patients with Tinnitus

2011 ◽  
Vol 120 (8) ◽  
pp. 523-528 ◽  
Author(s):  
Dong-Kee Kim ◽  
Shi-Nae Park ◽  
Hyung Min Kim ◽  
Hye Rim Son ◽  
Nam-Gyun Kim ◽  
...  
Keyword(s):  
Hearing Loss ◽  
High Frequency ◽  
Normal Hearing ◽  
High Frequency Hearing Loss

Modified Earpieces and CROS for High Frequency Hearing Losses

1968 ◽  
Vol 11 (1) ◽  
pp. 204-218 ◽  
Author(s):  
Elizabeth Dodds ◽  
Earl Harford
Keyword(s):  
Hearing Loss ◽  
Hearing Aids ◽  
High Frequency ◽  
Hearing Aid ◽  
Sound Field ◽  
Intensity Level ◽  
Test Results ◽  
High Frequency Hearing Loss ◽  
Increased Sensitivity ◽  
Difficult Cases

Persons with a high frequency hearing loss are difficult cases for whom to find suitable amplification. We have experienced some success with this problem in our Hearing Clinics using a specially designed earmold with a hearing aid. Thirty-five cases with high frequency hearing losses were selected from our clinical files for analysis of test results using standard, vented, and open earpieces. A statistical analysis of test results revealed that PB scores in sound field, using an average conversational intensity level (70 dB SPL), were enhanced when utilizing any one of the three earmolds. This result was due undoubtedly to increased sensitivity provided by the hearing aid. Only the open earmold used with a CROS hearing aid resulted in a significant improvement in discrimination when compared with the group’s unaided PB score under earphones or when comparing inter-earmold scores. These findings suggest that the inclusion of the open earmold with a CROS aid in the audiologist’s armamentarium should increase his flexibility in selecting hearing aids for persons with a high frequency hearing loss.

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