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The aim of the study was to compare the acoustic characteristics of voice between Auditory Brainstem Implantees, Cochlear Implantees and normal hearing children. Voice parameters such as fundamental frequency, formant frequencies, perturbation measures, and harmonic to noise ratio were measured in a total of 30 children out of which 10 were Auditory Brainstem Implantees, 10 were Cochlear Implantees and 10 were normal hearing children. Parametric and nonparametric statistics were done to establish the nature of significance between the three groups. Overall deviancies were seen in the implanted group for all acoustic parameters. However abnormal deviations were seen in individuals with Auditory Brainstem Implants indicating the deficit in the feedback loop impacting the voice characteristics. The deviancy in feedback could attribute to the poor performance in ABI and CI. The CI performed comparatively better when compared to the ABI group indicating a slight feedback loop due to the type of Implant. However, there needs to be additional evidence supporting this and there is a need to carry out the same study using a larger sample size and a longitudinal design.
ABSTRACT
The aim of the article was to compare the conditions of silent and contralateral noise on the temporal processing parameters. A total of 40 participants (20 males and 20 females) were enrolled in the study with a mean age of 21.7 years, participants with normal hearing thresholds and no history of middle ear pathology were enrolled for the study. The temporal processing tests such as duration discrimination test, gap detection test, and temporal modulation transfer function tests were carried out in these 40 individuals in the two conditions of silent and contralateral noise using MATLAB. Statistical analysis was carried out using the SPSS version 25.0 were descriptive and inferential statistics were carried out. Data was normally distributed on the Shapiro-Wilk's test of normality due to which a paired t test was carried out to establish the nature of significance between the silent and contralateral noise condition. Results reveal the presence of significant difference (p < 0.01) between the groups for all the parameters of temporal resolution with contralateral noise condition performing better than silent condition for the parameters. There is a positive effect of the efferent auditory pathway on the temporal resolution parameters thus implying that speech perception in noise is improved in the presence of background noise for normal hearing individuals due to this effect.
ABSTRACT
The Coronavirus Disease of 2019 has now become one of the biggest pandemics of all time. Under the influence of ongoing mutations and widespread geographical expansions, several variants have been reported. Among those, the B.1.617.2 variant, most commonly known as the 'Delta variant' of the coronavirus disease - 19, was first reported in the state of Maharashtra of India in December 2020 and have currently been detected in over 43 countries across six continents around the globe. The B.1.617.2 variant of COVID 19 is a more treacherous variant than the alpha variant due to the increased replication leading to higher viral loads and increased transmission with minimal literature reporting about vaccines' efficacy. In patients with the Alpha variant of COVID-19, hearing loss was an infrequent symptom seen, but on the other hand, the Delta variant happens to have a more frequent hearing loss as a symptom. The increased severity could be one of the reasons why hearing loss could be a typically seen symptom with high chances of occurrence of either a thrombosis, cross-reaction, labyrinthitis/neuritis, etc. and thus audiologists and otolaryngologists must be prepared for the post effect of the delta variant to evaluate and rehabilitate the individuals affected with hearing loss. The following article discusses the presence of hearing loss in individuals with delta variant of COVID 19 and the role of audiologists and otolaryngologists in hearing care.
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Hypertension is a condition in which there is an abnormal blood pressure with a systolic pressure of more than 140 mmHg and a diastolic pressure of more than 90 mmHg. It has been cited that hypertension can cause hearing loss. To understand the association between hypertension and hearing loss, a systematic review has been carried out in Pubmed Central, Google Scholar, EBSCO, Web of Science, Indian Science Abstracts, J Gate, Proquest, and Shodh Ganga. This review included original articles published on or after 2016 with cross-sectional study design, retrospective study design, and longitudinal design and excluded case reports and letters to the editors. Out of the 11,977 articles, only ten articles were finalized. These 10 articles stated a possible association between hypertension and hearing loss by explaining that Cochlear microcirculation change resulted in tissue hypoxia that caused hearing loss.
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The coronavirus disease of 2019 is a global pandemic disease severely affecting the upper respiratory tract that can be fatal in some instances. The virus most commonly affects the respiratory system. However, in certain cases it affects the other systems, including cardiovascular, renal, gastrointestinal, neurological, and auditory. Concerning the hearing and balance system, the microcirculation supply to the inner ear is hampered thus causing audiovestibular symptoms. Several case studies have reported sudden sensorineural hearing loss post-coronavirus disease and its detrimental impact on overall hearing. As both sudden sensorineural hearing loss and coronavirus disease deals with an emergency situation, there is a need to document case studies on how these individuals have been assessed and treated. The article has systematically reviewed these case reports involving a search strategy in databases like PubMed, PubMed Central, science direct, J-GATE, Google Scholar, and a manual Google Search.
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The aim of the article was to compare the auditory working memory capacities during adolescence period. A total of 45 participants between the age of 10 and 22 years were included in the study. The participants were grouped in 3 based on their age range from 10 to 14 (group 1), 14-18 (group 2), and 18-22 years (group 3) for the study. Participants with normal hearing thresholds and no history of middle ear pathology were enrolled for the study. Auditory working memory tests were carried out in these individuals which included midpoint and maximum scores of ascending span, descending span, digit forward span, and digit backward span. Statistical analysis was carried out using the SPSS version 25.0, descriptive and inferential statistics were carried out. Data was normally distributed on the Shapiro-Wilk's test of normality due to which a one-way ANOVA was done to establish the nature of significance across the groups and Tukey's post hoc test was done for establishing the presence of significance between the groups (group 1-group 2, group 2-groups 3, and group 1-group 3). To identify the relationship between the age of individuals and working memory scores, a Pearson correlation was done. Results reveal the presence of significant difference across the groups and between the groups too (p < 0.05) with noticeable significant effect seen in group 3 (18-22 years) than in group 2 (14-18 years) and group 1 (10-14 years) respectively. There is a positive effect of age and changes in working memory abilities. This implies the presence of maturation during adolescence period at the level of prefrontal cortex and other cortical areas. Supporting literatures state there is presence of reduced activation on functional imaging studies during early adulthood period which could attribute to the significantly high scores in age range 18-22 years.
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The aim of the article was to compare the conditions of silent and contralateral noise on Differential sensitivity in normal hearing individuals. A total of 40 participants (20 males and 20 females) were enrolled in the study with a mean age of 21.7 years, participants with normal hearing thresholds and no history of middle ear pathology were enrolled for the study. Difference limen tests such as difference limen for intensity (DLI), difference limen for frequency (DLF), and difference limen for time (DLT) were carried out in these 40 individuals in the two conditions of silent and contralateral noise using MATLAB. Statistical analysis was carried out using the SPSS version 25.0 were descriptive and inferential statistics were carried out. Data was normally distributed on the Shapiro-Wilk's test of normality due to which a paired t test was carried out to establish the nature of significance between the silent and contralateral noise condition. Results reveal the presence of significant difference (P < 0.01) between the groups for DLF and DLT with contralateral noise condition performing better than silent condition for the parameters. However, no significant difference was obtained for DLI. There is a positive effect of the efferent auditory pathway on the Differential sensitivity thus implying that speech perception in noise is improved in the presence of background noise for normal hearing individuals due to this effect. But in case of DLI, the reduced spread of excitation could be the reason why there were no significant differences between silent and contralateral noise condition.
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BACKGROUND: To compare the frequency parameters of voice between children using cochlear implant (CI) and those with normal hearing and establishing a trend of development of voice characteristics across chronological and implant ages. METHODS: The study included 87 children aged 12 to 72 months, with a mean age of 41 months. The subjects were divided into 2 groups: group 1 included 44 children using CIs, and group 2 included 43 children with normal hearing and age-appropriate speech and language characteristics. Both groups were categorized into 3 subgroups based on their chronological ages, group A (12-32 months), B (33-52 months), and C (53-72 months). The CI group (i.e., group 2) was further subdivided based on implant ages as group D (1-4 months), E (5-8 months), and F (9-12 months). RESULTS: Comparison of vocal frequency parameters across chronological ages revealed a decline with increasing age in both groups; however, stability was not maintained in the CI group. There was a statistically significant difference in the vocal frequency parameters between normal hearing children and those with CI. Comparing across implant ages, there was a significant difference between groups D and F. CONCLUSION: For better communication abilities of individuals with CI, along with early implantation and rehabilitation, there is a need to also focus therapy on providing training on speech modulations, especially on voice characteristics.
Subject(s)
Cochlear Implantation , Cochlear Implants , Deafness , Speech Perception , Child , Child, Preschool , Deafness/surgery , Hearing , Humans , Infant , SpeechABSTRACT
OBJECTIVE: The aim of the study was to translate and validate the LittlEARS Auditory Questionnaire (LEAQ) in Kannada. METHOD: The translation procedure followed a traditional translation, back translation, and content validity process before administering. The finalized version was administered on 87 children with 67 normal hearing children and 20 hearing-impaired children. RESULTS: The tool had good internal consistency, good reliability, and a norm curve could be established. The Cronbach alpha value for item correlation ranged from 0.26 to 0.79. A significant difference was found between normal hearing individuals and hearing impaired. CONCLUSION: The LEAQ tool has been translated and validated for the Kannada speaking population and can be used as a screening tool for children up to two years of age and as a subjective outcome measuring tool for hearing aid and Cochlear Implant user.