Study on suppression of otoacoustic emissions: lateral domain

Oliveira, Jerusa Roberta Massola de; Fernandes, Candido Fernandes; Filho, Orozimbo Alves Costa

doi:10.1590/s1808-86942011000500002

Cited by 7 publications

(5 citation statements)

References 5 publications

(15 reference statements)

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“…Our results showed no significant effect of the ear of presentation of the CS on the change in sharpness of the PTCs produced by the CS. As described in the Introduction section, some studies showed a greater effect of CS on TOAEs when the CS was presented to the left ear than when it was presented to the right ear (Khalfa et al, 1998;Perrot et al, 1999), but such an asymmetry has not always been found (de Oliveira et al, 2011). Brashears et al (2003) found a nonsignificant trend for the effect of the CS to be greater for musicians than for nonmusicians when the CS was presented to the left ear, but our results revealed no such trend.…”

Section: Discussionmentioning

confidence: 99%

“…It has been reported that the effect of CS on TOAEs is greater when the evoking stimulus is presented to the right ear and the CS is presented to the left ear than vice versa (Bidelman & Bhagat, 2015; Khalfa et al., 1998), although such an effect has not always been found (de Oliveira et al., 2011). The asymmetry, when present, appears to be similar for musicians and nonmusicians (Perrot et al., 1999), although Brashears et al.…”

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confidence: 99%

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No Influence of Musicianship on the Effect of Contralateral Stimulation on Frequency Selectivity

2020

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The efferent system may control the gain of the cochlea and thereby influence frequency selectivity. This effect can be assessed using contralateral stimulation (CS) applied to the ear opposite to that used to assess frequency selectivity. The effect of CS may be stronger for musicians than for nonmusicians. To assess whether this was the case, psychophysical tuning curves (PTCs) were compared for 12 musicians and 12 nonmusicians. The PTCs were measured with and without a 60-dB sound pressure level (SPL) pink-noise CS, using signal frequencies of 2 and 4 kHz. The sharpness of the PTCs was quantified using the measure Q10, the signal frequency divided by the PTC bandwidth measured 10 dB above the level at the tip. Q10 values were lower in the presence of the CS, but this effect did not differ significantly for musicians and nonmusicians. The main effect of group (musicians vs. nonmusicians) on the Q10 values was not significant. Overall, these results do not support the idea that musicianship enhances contralateral efferent gain control as measured using the effect of CS on PTCs.

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

No Influence of Musicianship on the Effect of Contralateral Stimulation on Frequency Selectivity

2020

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“…Although the difference is not statistically significant, this result suggests lower effectiveness of the medial efferent olivocochlear system concerning the EG 7,13. . Numerical comparisons between studies are difficult, since there are methodological differences used to measure the suppression of TEOAEs, such as type and intensity of suppressive noise, intensity and polarity of the click, and the ear in which the masking was presented (contralateral/ipsilateral/bilateral) and the equipment used 27 . This study did not show statistically significant differences between the presence of suppression and age in the EG individuals (Table 3), although previous studies have demonstrated a reduction in the suppression effect according to age increases 28,29 .…”

Section: Legend: Teoaes-transient-evoked Otoacoustic Emissions N -Nummentioning

confidence: 99%

Avaliação eletroacústica da via eferente olivococlear em indivíduos com queixa de zumbido

et al. 2016

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Purpose: to investigate the suppressive effect of transient-evoked otoacoustic emissions in subjects with tinnitus complaint and normal audiometry and to analyze the relation to age, gender, laterality of tinnitus and its degree of discomfort. Methods: we assessed 60 subjects, 14 males and 46 females, aged between 20 and 59 years, 30 with tinnitus (experimental group) and 30 without tinnitus complaint (control group). The suppression of transient-evoked otoacoustic emissions was investigated with contralateral white noise at 50 dBHL at the frequency bands of 700, 1000, 1400, 2000, 2800 and 4000Hz. Results: the mean value for the suppression of transient-evoked otoacoustic emissions in the experimental group ranged from 2.14 to 4.38. In the control group, the mean value for suppression of transient--evoked otoacoustic emissions ranged from 2.27 to 4.88. Conclusion: suppression values of otoacoustic emissions were similar in subjects with and without tinnitus, although the results of the tinnitus group were lower, suggesting worse performance of the Superior Olivary Complex.

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“…7 15 17 As a consequence, the effect of suppression of evoked OAEs is characterized by a reduction in the response amplitude or by latency and phase changes when a contralateral noise is introduced simultaneously to the recording. 18 …”

Section: Review Of the Literaturementioning

confidence: 99%

The Study of Otoacoustic Emissions and the Suppression of Otoacoustic Emissions in Subjects with Tinnitus and Normal Hearing: An Insight to Tinnitus Etiology

Serra

Novanta

Sampaio

et al. 2014

Int. Arch. Otorhinolaryngol.

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Introduction Analysis of the suppression effect is a simple method to evaluate cochlear status and central auditory mechanisms and, more specifically, the medial olivocochlear system. This structure may be involved in the generation of mechanisms that cause tinnitus and in the pathophysiology of tinnitus in patients with tinnitus and normal hearing. Objective To review the literature of the etiology of tinnitus on the lights of otoacoustic emissions in patients with normal hearing. Data Synthesis Individuals with tinnitus and normal hearing have a higher prevalence of alterations in transient-evoked otoacoustic emissions and distortion-product otoacoustic emissions than normal subjects. This fact suggests that dysfunctions of the outer hair cells (OHCs) might be important in the generation of the tinnitus; however, this feature is not always present in those who have the symptoms of tinnitus. Final Comments These findings suggest that OHC dysfunction is not necessary for tinnitus development—that is, there might be mechanisms other than OHC damage in the tinnitus development. On the other hand, OHC dysfunction alone is not sufficient to cause the symptom, because a great many individuals with OHC dysfunction did not complain about tinnitus.

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Study on suppression of otoacoustic emissions: lateral domain

Cited by 7 publications

References 5 publications

No Influence of Musicianship on the Effect of Contralateral Stimulation on Frequency Selectivity

No Influence of Musicianship on the Effect of Contralateral Stimulation on Frequency Selectivity

Avaliação eletroacústica da via eferente olivococlear em indivíduos com queixa de zumbido

The Study of Otoacoustic Emissions and the Suppression of Otoacoustic Emissions in Subjects with Tinnitus and Normal Hearing: An Insight to Tinnitus Etiology

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