THE EFFECT OF THERMAL NOISE EXPOSURES ON AUDITORY THRESHOLD SENSITIVITY FOR PURE TONE

Hearing threshold has been measured in a group of patients following cochlear implantation with a Clarion® device for the last eight years. The patients had received either a pre-curved carrier or the Hi-Focus I plus Electrode Positioner System (EPS). The assessment was carried out within the first post-operative week as well as at a later stage, between six and 87 months, post-operatively. Residual hearing thresholds were still measurable early after surgery in 24.5 per cent of the patients, without differences between the two different Clarion® models. However, the number of subjects with measurable hearing dropped to 16.3 per cent as observed when hearing was measured at a later stage, with an equal distribution between the two groups of patients. From this study it has been possible to observe that only a limited number of patients maintain residual hearing after Clarion® cochlear implantation, and that this tends to decrease further over time. Nevertheless, the performance of these patients for speech tests did not appear to be affected by deterioration of the pure-tone auditory threshold.

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Comparison of the Auditory Threshold as Measured by Individual Pure Tone and by Békésy Audiometry

The Journal of the Acoustical Society of America ◽

10.1121/1.1908761 ◽

1957 ◽

Vol 29 (12) ◽

pp. 1274-1277 ◽

Cited By ~ 35

Author(s):

W. Burns ◽

R. Hinchcliffe

Keyword(s):

Pure Tone ◽

Auditory Threshold ◽

Békésy Audiometry

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Development of pure‐tone auditory threshold in school children

The Journal of the Acoustical Society of America ◽

10.1121/1.2935193 ◽

2008 ◽

Vol 123 (5) ◽

pp. 3723-3723

Author(s):

Reinhard Müller

Keyword(s):

School Children ◽

Pure Tone ◽

Auditory Threshold

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Correlation between maximum phonetically balanced word recognition score and pure-tone auditory threshold in elder presbycusis patients over 80 years old

Acta Oto-Laryngologica ◽

10.3109/00016489.2013.844855 ◽

2013 ◽

Vol 134 (2) ◽

pp. 168-172 ◽

Cited By ~ 8

Author(s):

Xin-Sheng Deng ◽

Fei Ji ◽

Shi-Ming Yang

Keyword(s):

Word Recognition ◽

Pure Tone ◽

Recognition Score ◽

Auditory Threshold

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Electroencephalic Audiometry by Cortical Conditioning

Journal of Speech and Hearing Research ◽

10.1044/jshr.1004.706 ◽

1967 ◽

Vol 10 (4) ◽

pp. 706-716 ◽

Cited By ~ 4

Author(s):

Kenneth C. Pollock

Keyword(s):

Conditioned Stimulus ◽

Unconditioned Stimulus ◽

Pure Tone ◽

Normal Hearing ◽

Auditory Threshold ◽

Tone Conditioned Stimulus ◽

Contingent Response

Twenty-four normal-hearing adults were conditioned to associate a flash of light (unconditioned stimulus) with a pure tone (conditioned stimulus). The contingent response was used to estimate auditory threshold for 500, 1000, and 2000 Hz. Results showed that 23 of the 24 subjects were conditioned to form the tone-light association, the majority within 10 trials. Conditioned EEG responses varied in form, amplitude, and latency within and among individuals, and were without hemispheric predominance. The evoked EEG response habituated rapidly, whereas the conditioned EEG response was maintained throughout the procedure and transferred readily among the test frequencies. Auditory threshold estimated by this method was within 5 dB of voluntary threshold for at least one of the test frequencies for all 23 of the conditioned subjects.

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