Medial Efferent Mechanisms in Children with Auditory Processing Disorders

Mishra, Samarth

doi:10.3389/fnhum.2014.00860

Cited by 25 publications

(21 citation statements)

References 68 publications

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“…Thus, both acoustic reflex threshold (ART) elevation and reduction in the reflex amplitude can be attributed to the inhibition caused by the efferent system. Mishra [14] reported that antimasking is caused by inhibitory mechanisms at the level of the stapedius muscle. MOCB activation leads to the release of inhibitory neurotransmitters, which cause electrical/mechanical changes in the cochlea [15] .…”

Section: Introductionmentioning

confidence: 99%

“…The absence of suppression is generally indicative of an abnormal medial efferent system. Abnormal MOCB (efferent) functioning is seen in individuals with a learning disability [12] , auditory neuropathy spectrum disorder [13] , and (central) auditory processing disorder [14] . MOCB functioning and stapedial reflexes are two mechanisms that elevate the threshold in the auditory periphery [15] .…”

Section: Introductionmentioning

confidence: 99%

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Effect of Contralateral Noise on Acoustic Reflex Latency Measures

Prabhu

Divyashree²,

Neeraja³

et al. 2016

Int Adv Otol

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OBJECTIVE:The present study was conducted to determine the effect of contralateral broadband noise on acoustic reflex latency (ARL). MATERIALS and METHODS:Acoustic reflex latency changes for 10 and 90% on-and off-time acoustic reflexes with contralateral broadband noise were measured in 30 adults with normal hearing. RESULTS:The results of the study demonstrate that there was a latency prolongation for reflex on-time (10 and 90%) and latency reduction for reflex off-time (10 and 90%). This effect was seen for 500, 1000, and 2000 Hz reflex-eliciting signals. The results also showed that there was no effect of gender on latency changes in acoustic reflexes. CONCLUSIONS:Latency changes may explain efferent auditory system mechanisms used for the protection of the cochlea and improvement in speech perception. Thus, contralateral changes of ARL can serve as an additional tool to assess the efferent system functioning.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Contralateral Noise on Acoustic Reflex Latency Measures

Prabhu

Divyashree²,

Neeraja³

et al. 2016

Int Adv Otol

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“…The effect of CAS conditions on MOC inhibition was assessed for dB and normalized MOC indices. For brevity, graphs are presented only for DCEOAEn because normalized metric has been argued to be a more valid index (Backus and Guinan, 2007;Garinis et al, 2011;Guinan et al, 2003;Mishra andLutman, 2014, 2013). For DCEOAEn data, the assumption of sphericity was also violated (Mauchly's test, c 2 ¼ 10.57, p < 0.01).…”

Section: Resultsmentioning

confidence: 99%

“…Since this study included children, a relatively simpler listening-in-noise task (tone detection in noise) was used to modulate attention. Besides theoretical interest, such as auditory modeling (Clark et al, 2012), characterizing the nature of task-dependent MOC inhibition in children has high translational significance for understanding, diagnosing and managing listening problems in children (Mishra, 2014;Muchnik et al, 2004;Veuillet et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Attentional modulation of medial olivocochlear inhibition: Evidence for immaturity in children

Mishra

2014

Hearing Research

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“…It is estimated, that this problem concerns 2-3%, and according to some authors even 5% of Polish children ages 7-12 [1,2].…”

Section: Introduction and Aimmentioning

confidence: 99%

Auditory Processing Disorder (APD) – Be vigilant and aware

Emich-Widera¹,

Aleksandra²,

Katarzyna³

et al. 2017

Pediatr Dimensions

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Auditory Processing Disorder (APD) are defects of the auditory sense, which result from abnormalities in the functioning of the auditory path at the level of the central nervous system from the center of the Cochlea to the auditory cortex. This is a problem that 2-3% of children, aged 7-14 suffer from in Poland.The aim of this paper is to establish a spectrum of the most common symptoms as well as to determine the most common age range of the children that have been diagnosed.A retrospective analysis was conducted, based on the medical documentation of patients diagnosed and treated in the audiological clinic. The examined group consisted of 215 children ages 6 to 18. The inclusion criteria were as follows: normal peripheral hearing and an IQ indicator of at least 85. Data was analyzed with the use of STATISTICA 9.1 program.The highest number of children were admitted with problems connected to writing (78,15%), reading (69,77%), and concentrating (60,93%). The most common symptomsamong patients who have been diagnosed with APD)were as follows: late speech development (96%), speech defects (91,4%), problems with learning a language (91,67%). The most numerous group represented were patients aged 10 to 12 (40,93%). The accuracy of the initial diagnosis was the highest in the 6 to 7 age group (96,15%).The results of this paper speak for the necessity of increasing APD awareness among people close to a child as the problems that emerge are common and a lot of the diagnoses late.

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Medial Efferent Mechanisms in Children with Auditory Processing Disorders

Cited by 25 publications

References 68 publications

Effect of Contralateral Noise on Acoustic Reflex Latency Measures

Effect of Contralateral Noise on Acoustic Reflex Latency Measures

Attentional modulation of medial olivocochlear inhibition: Evidence for immaturity in children

Auditory Processing Disorder (APD) – Be vigilant and aware

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