The Relationship Between the Uncomfortable Loudness Level and the Acoustic Reflex Threshold for Pure Tones in Normally-hearing and Impaired Listeners—A Meta-analysis

1999 ◽  
Vol 38 (2) ◽  
pp. 61-68 ◽  
Author(s):  
Steen Ø. Olsen
Keyword(s):  
Meta Analysis ◽  
Acoustic Reflex ◽  
Loudness Level ◽  
Reflex Threshold ◽  
Pure Tones ◽  
Acoustic Reflex Threshold ◽  
The Relationship

The Relationship between Magnitude of Hearing Loss and Acoustic Reflex Threshold Levels

1981 ◽  
Vol 46 (3) ◽  
pp. 312-316 ◽  
Author(s):  
Shlomo Silman ◽  
Stanley A. Gelfand
Keyword(s):  
Hearing Loss ◽  
Test Frequency ◽  
Acoustic Reflex ◽  
Threshold Levels ◽  
Reflex Responses ◽  
Reflex Threshold ◽  
Pure Tones ◽  
Acoustic Reflex Threshold ◽  
The Relationship

The acoustic reflex threshold (ART) was studied in 544 ears having hearing levels (ANSI-1969) ranging from 0 to 110 dB HL. The activating signals were pure tones (500, 1000, and 2000 Hz) presented at levels up to 125 dB HL. The results indicated that the ART increased with hearing loss beyond certain levels. The proportion of absence of reflex responses depends upon the degree of hearing loss, test frequency, and the limits imposed by the instrumentation. Absence of reflex responses is rare for hearing losses of less than about 80 dB HL when the hearing loss is attributable to cochlear involvement.

Relationship Between Loudness Discomfort Level and Acoustic Reflex Threshold for Normal and Sensorineural Hearing-Impaired Individuals

1979 ◽  
Vol 22 (4) ◽  
pp. 873-883 ◽  
Author(s):  
H. Lee McLeod ◽  
Herbert J. Greenberg
Keyword(s):  
Pure Tone ◽  
Hearing Impaired ◽  
Sensorineural Hearing ◽  
Psychophysical Method ◽  
Acoustic Reflex ◽  
Impaired Group ◽  
Group A ◽  
Reflex Threshold ◽  
Acoustic Reflex Threshold ◽  
The Relationship

The relationship between loudness discomfort level (LDL) and acoustic reflex threshold (ART) was determined by comparing the ART to the LDL obtained by the psychophysical method of constant stimuli. Randomly presented stimuli of 1000 Hz, 2000 Hz, and a multi-talker speech noise were presented to normal and sensorineural hearing-impaired listeners. The listener’s task was to judge whether the stimulus was at a level that was: (1) too loud or uncomfortably loud; or (2) not too loud or not uncomfortably loud. Prior to the judgment of the subject, the acoustic reflex threshold was determined. Both LDL and ART were found to be significantly higher for the hearing-impaired group. For the pure tone stimuli, LDL for the hearing-impaired group was at or below the ART. Significant differences were shown to exist between LDL and ART for each group. A multiple regression analysis indicated significant correlations between LDL and ART. Ranges of prediction error were selected to investigate the ability of ART to predict LDL. Both pure tone and speech ART successfully predicted LDL within ± 10 dB for a high percentage of the subjects.

Effects of Ethyl Alcohol on the Contralateral and Ipsilateral Acoustic Reflex Threshold

1979 ◽  
Vol 22 (2) ◽  
pp. 289-294 ◽  
Author(s):  
Edward N. Cohill ◽  
Herbert J. Greenberg
Keyword(s):  
Linear Relationship ◽  
Blood Alcohol Concentration ◽  
Alcohol Concentration ◽  
Alcohol Solution ◽  
Blood Alcohol ◽  
Acoustic Reflex ◽  
Frequency Effects ◽  
Reflex Threshold ◽  
Pure Tones ◽  
Acoustic Reflex Threshold

Contralateral and ipsilateral acoustic reflex thresholds were measured in response to 500-, 1000-, and 2000-Hz pure tones after the ingestion of a 50% alcohol solution. Acoustic reflex threshold measurements were obtained preingestion and at blood-alcohol concentrations of 0.03 to 0.10% in 0.01% increments. A linear relationship existed between acoustic reflex threshold and blood-alcohol concentration, with the greatest shift at 0.10% being 11 dB for contralateral stimulation and 7 dB for ipsilateral. No frequency effects were found. Results can be explained by the anatomical differences in the contralateral and ipsilateral pathways.

A Comparison of Acoustic Reflex and Loudness Growth in Normal and Pathological Ears

1973 ◽  
Vol 16 (2) ◽  
pp. 271-281 ◽  
Author(s):  
Randall K. Beedle ◽  
Earl R. Harford
Keyword(s):  
Hearing Loss ◽  
Endolymphatic Hydrops ◽  
Growth Function ◽  
Unilateral Hearing Loss ◽  
Acoustic Reflex ◽  
Acoustic Reflexes ◽  
Reflex Threshold ◽  
Acoustic Reflex Threshold ◽  
The Relationship ◽  
Loudness Growth

This study compares acoustic reflex growth and loudness growth at 500, 1000, and 2000 Hz. Two groups of 10 subjects each were tested: a group with normal hearing, and a group with a unilateral hearing loss resulting from endolymphatic hydrops and demonstrating loudness recruitment. Acoustic reflexes were recorded graphically at successive 2-dB increments from the reflex threshold to a sensation level of 16 dB, employing an ascending and a descending approach. Alternate binaural loudness balances were performed at three sensation levels relative to the acoustic reflex threshold. Results indicate that the slope of the acoustic reflex growth function is much greater and more rapid for the normal ears than for either ear of the subjects with unilateral hydrops. Also, the acoustic reflex growth is essentially the same for the impaired ears and the good ears of the subjects with a unilateral hearing loss. On the basis of these results, it appears that the relationship presumed to exist between loudness experience and the acoustic reflex must be questioned.

Clinical Acoustic Reflex Threshold Measurements in Infants

1977 ◽  
Vol 42 (4) ◽  
pp. 514-519 ◽  
Author(s):  
Dennis A. Abahazi ◽  
Herbert J. Greenberg
Keyword(s):  
White Noise ◽  
Acoustic Impedance ◽  
Acoustic Reflex ◽  
Auditory Thresholds ◽  
Low Pass ◽  
Reflex Threshold ◽  
Pure Tones ◽  
One Year ◽  
Acoustic Reflex Threshold ◽  
High Pass

Acoustic reflex thresholds elicited using clinical acoustic impedance techniques were obtained on normal infants between one month and one year of age. Reflex activating signals of 500, 1000, 2000 Hz, low-pass, high-pass, and white noise were used. Less intensity was required to elicit the acoustic reflex to the noise than to the pure tones, with the 500-Hz tone requiring the greatest intensity. Inference of auditory thresholds from the acoustic reflex indicated the presence of normal hearing in the infant group.

Effects of Alcohol on the Acoustic Reflex Threshold

2008 ◽  
Vol 4 (1) ◽  
pp. 48-51
Author(s):  
Mee-Hye Park ◽  
Hyun-Woo Kyun ◽  
Boo-Eem Kim
Keyword(s):  
Acoustic Reflex ◽  
Reflex Threshold ◽  
Acoustic Reflex Threshold

Some effects of signal bandwidth and spectral density on the acoustic‐reflex threshold in the elderly

1989 ◽  
Vol 86 (5) ◽  
pp. 1783-1789 ◽  
Author(s):  
John J. Jakimetz ◽  
Shlomo Silman ◽  
Maurice H. Miller ◽  
Carol Ann Silverman
Keyword(s):  
Spectral Density ◽  
The Elderly ◽  
Acoustic Reflex ◽  
Reflex Threshold ◽  
Acoustic Reflex Threshold
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