scholarly journals Contralateral Suppression of Spontaneous Otoacoustic Emissions in Individuals With Auditory Neuropathy Spectrum Disorder

2021 ◽  
Vol 17 (4) ◽  
pp. 325-329
Author(s):  
Prashanth Prabhu ◽  
◽  
Kirti Joshi ◽  
Jasiya Karthanatil Muhammad ◽  
Kavassery Venkateswaran Nisha ◽  
...  
2016 ◽  
Vol 27 (10) ◽  
pp. 839-845 ◽  
Author(s):  
Vijaya Kumar Narne ◽  
Prashanth Prabhu ◽  
Hunsur S. Chandan ◽  
Mahadeva Deepthi

Background: There are many studies reported in the literature that have summarized audiological findings and possible rehabilitation in individuals with auditory neuropathy spectrum disorder (ANSD). However, there are very few studies that have attempted to delineate the gender differences in audiological characteristics and hearing aid benefit in individuals with ANSD. Purpose: The study aimed to explore the differences between males and females in terms of demographic details, audiogram, speech identification scores, otoacoustic emissions, acoustic reflexes, long latency responses, and hearing aid benefit. Research Design: A retrospective study. Study Sample: A total of 255 individuals diagnosed with ANSD were selected for the study. The study included 137 females and 88 males. Data Collection and Analysis: The demographic details, results of diagnostic audiological testing, and hearing aid benefit were analyzed retrospectively. The differences in findings across gender were compared. Results: The study shows that females have a relatively higher degree of hearing loss and that the majority of females show a rising type of audiometric configuration. The study shows that females have poorer speech perception abilities and experience limited benefits from hearing aids compared to males. Conclusions: The results of the study show that there are gender differences in audiological findings and hearing aid benefits in individuals with ANSD. However, well-controlled prospective studies are essential to confirm the results obtained and to identify the possible mechanisms underlying the gender differences.


2019 ◽  
Vol 24 (02) ◽  
pp. e140-e148
Author(s):  
Sujeet Kumar Sinha ◽  
Anuj Kumar Neupane ◽  
Krithika Gururaj

Abstract Introduction Auditory neuropathy spectrum disorder (ANSD) features the presence of otoacoustic emissions, poor speech identification score and absent auditory brainstem response. Objective The present study was designed to evaluate the functioning of all six semicircular canals in individuals with ANSD and to compare it with those of normal-hearing individuals. Methods A total of 50 individuals participated in the present study, in which Group I comprised 25 normal-hearing individuals, and Group II comprised 25 individuals with ANSD. All of the participants underwent case history, pure tone audiometry, immittance, otoacoustic emissions, auditory evoked response and video head impulse test (vHIT). Results The independent sample t-test revealed significantly lower vestibulo-ocular reflex gain values in individuals with ANSD. A presence of 100% corrective refixation saccades was observed in the same group. The Pearson correlation test revealed no significant correlation between vestibulo-ocular reflex (VOR) gain with duration of hearing loss and pure tone thresholds for any of the three orthogonal planes. The chi-squared test revealed no association between the VOR gain values and the presence or absence of saccades in any of the semicircular canals (p > 0.05). Conclusion Huge percentages of individuals with ANSD have been found to have associated vestibular dysfunction as well. Therefore, the vHIT can be used as one of the important tests of the vestibular test battery to evaluate all six semicircular canals in individuals with ANSD.


2020 ◽  
Vol 50 (3) ◽  
pp. 246-248
Author(s):  
Helen Brough

Auditory neuropathy spectrum disorder (ANSD) can cause significant hearing impairment; it occurs when there is intact outer hair cell function in the inner ear, with a dyssynchronous neural response, thought to be due to dysfunction of the inner hair cells (IHCs), the synapse of the IHCs and the auditory nerve, or of the auditory nerve itself. This case report describes the onset of ANSD in a Malawian child after severe malaria treated with quinine. Diagnosis of ANSD was made by confirming the presence of otoacoustic emissions, together with the absence of auditory brainstem response and absent acoustic reflexes.


2021 ◽  
Vol 42 (5) ◽  
pp. 103057
Author(s):  
Firas Sbeih ◽  
Donald M. Goldberg ◽  
Sara Liu ◽  
Maxwell Y. Lee ◽  
Gina Stillitano ◽  
...  

2020 ◽  
Vol 129 ◽  
pp. 109757 ◽  
Author(s):  
Joseph B. Meleca ◽  
Gina Stillitano ◽  
Maxwell Y. Lee ◽  
Whitney Lyle ◽  
Yi-Chun Carol Liu ◽  
...  

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