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Introduction: Central auditory processing disorder (CAPD) refers to difficulties in processing audible signals not attributable to impaired hearing sensitivity or mental impairment. The demographic characteristics of pediatric CAPD and its prevalence are still debatable. Due to varied definitions and differences in the diagnostic criteria for CAPD, the approximate prevalence measure varies from 0.5 to 7% of the population. Thus, a retrospective study on prevalence in individuals with CAPD was conducted. Method: A total of 3537 cases with ear-related problems were reported to Audiology OPD at All India Institute of Speech and Hearing from June 2017 to July 2019 between the age range of 6–18 years. Of these, 32 cases were diagnosed with CAPD, and this data was available for review. Results: The prevalence of individuals with CAPD reported in this duration was 0.7%. The results also revealed that the prevalence was higher among males and individuals of lower socio-economic status. Their significant symptoms were poor academic performance and difficulty following commands or instructions. The data also revealed that speech perception in noise was the most affected process, followed by binaural integration in these individuals. Conclusion: The study provides insight into the vulnerable population who can get CAPD (e.g., children and males or people from lower socio-economic backgrounds). [ABSTRACT FROM AUTHOR]

The current study aimed to determine the criteria used for screening and diagnosing cases with central auditory processing disorders (CAPD) in India. A cross-sectional questionnaire-based survey design was used in the present study. A questionnaire was developed to determine the criteria used for screening and diagnosing CAPD across clinics in India. Responses were obtained from 83 participants from all over India. Results indicated that 78% of respondents were currently doing CAPD evaluation. In that, the majority of respondents (63%) had a predetermined minimum battery that was relatively adaptable depending on the case history and age of the patient. In screening, most respondents used a screening questionnaire (SCAP, 75%) and a screening test (STAP, 60%). In the diagnostic protocol, the most used tests by the respondents were masking level difference (MLD), repetition of words (RW), gap detection test (GDT), pitch pattern test (PPT), speech perception in noise (SPIN), digit span test (DST), dichotic digit test (DDT), binaural fusion test (BFT), auditory brainstem response (ABR), dichotic CV test (DCVT), and duration pattern test (DPT). The current study's result will help professionals choose the minimum test battery for diagnosing CAPD. [ABSTRACT FROM AUTHOR]

Various factors influence speech perception in noise (SPIN): age, hearing loss, cognition, background noise, stimulus redundancy, type of stimulus used, and signal-to-noise ratio. The effect of age on SPIN with different stimuli is yet to be validated in the literature. This study aims to study the effect of age on SPIN results across different stimuli. The study is a cross-sectional study with ninety participants with normal hearing ability. All participants in the study were equally divided into three groups: the children's group aged 8 to 12 years, the adult group aged 18 to 30, and the older adult group aged 55 to 72 years. Speech perception in the background of Kannada speech babble was assessed across three stimuli: monosyllables (CV), phonemically balanced Kannada words, and Kannada sentences. The stimulus was presented at 60 dBSPL binaurally through a calibrated headphone at 0 dB SNR. The result indicated a significant main effect of age on SPIN across syllables, words, and sentences. Further, Mann-Whitney test results revealed a statistically significant difference between the SPIN scores of children and adults for syllables, words, and sentences. Also, a statistical difference was noted in SPIN scores between adults and older adults for syllables, words, and sentences. However, statistical differences between children and older adults were seen only for syllables. The trend showed that the SPIN scores for syllables, words, and sentences improve from childhood to adulthood, while scores deteriorate from the adult to older adult group. A similar trend was seen for all three stimulus types. However, the reduction in the SPIN score using syllables in the older adult group was more noticeable than words and sentences. It can be concluded that there is an effect of age on SPIN abilities across different stimuli. It highlights the importance of age-appropriate SPIN normative for various stimuli. [ABSTRACT FROM AUTHOR]

Background: The present study aimed to evaluate the effect of age and hearing loss on auditory processing abilities. For this purpose, auditory processing abilities were compared among young and older adults with normal hearing sensitivity and older adults with and without hearing loss. Method: The study comprised 20 normal-hearing young adults (18–25 years), 20 older adults with normal hearing sensitivity (50–70 years), and 20 older adults with mild to moderate sensorineural hearing impairment (50–70 years). All 60 participants underwent gap detection (GDT), dichotic consonant-vowe (DCV)l, speech in noise (SPIN), duration pattern (DPT), and working memory (forward and backward span) tests in a sound treated test room. Results: Results showed that young normal-hearing adults performed significantly better than normal-hearing older adults in SPIN, GDT, DCV, working memory, and DPT. Futher, normal-hearing older individuals performed better than older individuals with hearing impairment on all the auditory processing tests except on the forward span test and DPT. Conclusion: Auditory processing abilities deteriorate with age and hearing loss also has a pronounced effect on most auditory processing abilities. [ABSTRACT FROM AUTHOR]

Purpose: Adolescence is a period of transformation in humans with changes in the neural physiology at subcortical and cortical levels. However, its significance on auditory processing skills and working memory skills and their association is yet to be well understood. Hence, the current study was designed to evaluate and establish the association between auditory processing skills and working memory abilities in adolescents. Method: A total of 125 adolescents within the age range of 10 to 15 years participated in the current study. All of them had normal hearing sensitivity and no associated obvious peripheral or central deficits. All the participants underwent auditory closure ability assessment using quick speech perception in noise test in Kannada, binaural integration ability assessment using dichotic CV test, and temporal processing assessment using gap detection test. Auditory working memory abilities were assessed using auditory digit span and digit sequencing. Results: Spearman correlation was done to assess the correlation between auditory processing skills and working memory abilities. Results revealed a significant negative correlation between most of the central auditory processing abilities and all the working memory spans. Conclusions: Findings of the current study indicate that individuals with poor working memory abilities have difficulty in auditory processing abilities. [ABSTRACT FROM AUTHOR]

The study aimed to assess the risk of hearing loss in full-term neonates with hyperbilirubinemia, examining the relationship between bilirubin levels, onset age of hyperbilirubinemia, and hearing impairment. Additionally, it investigated whether hearing loss was transient or late-onset, using a cost-effective double-screening method.The study included 160 full-term neonates aged 0-1 month. Following completion of phototherapy for hyperbilirubinemia, all infants underwent initial screening with otoacoustic emissions (OAEs) and automated auditory brainstem responses (AABR). A second screening was administered to all infants within one month. Infants referred during the second screening, regardless of their first screening results, underwent diagnostic evaluation. For analysis, the infants were categorised into 4 groups, based on their bilirubin levels and onset of jaundice.After the initial screening, 37% of infants were referred, which decreased to 9% after subsequent screening, suggesting transient hearing loss in 76% of initially referred infants. Permanent hearing impairment was confirmed in 2.5% of infants following diagnostic evaluation, with 3 infants diagnosed with ANSD and 1 infant with sensorineural hearing loss, all from categories characterized by elevated bilirubin levels. The findings indicated that even bilirubin levels as low as 12 to 15 mg/dl could lead to hearing loss, particularly when jaundice onset occurred early.This study highlights the effectiveness of double-screening for identifying transient hearing losses in infants with hyperbilirubinemia, minimizing the need for diagnostic referrals. It underscores the importance of considering both bilirubin levels and onset timing to assess auditory risk fully. [ABSTRACT FROM AUTHOR]

The present study aimed to investigate the effect of use of N-95 masks on aided speech identification scores (SIS) in older adults with hearing loss. A total of 35 older adults in the age range of 60 years to 79 years (mean age of 64.97 years) participated in the present study. All the participants were diagnosed with moderate to severe sensorineural hearing loss. A prospective pre-test post-test study design was used in the present study with purposive convenient sampling method. The study was carried out in two phases. Phase 1 included the hearing aid fitting and verification. Phase 2 included measuring the speech identification scores (SIS) with and without N- 95 mask. The results of the present study showed that aided SIS scores obtained in without mask condition was significantly better than with N-95 mask condition. Thus is can be concluded that wearing of mask has detrimental effect of SIS in older adults. Hence audiologists can use this as a condition to counsel during hearing aid fitting and also to counsel about the decreased clarity issues due to wearing of mask. [ABSTRACT FROM AUTHOR]

The present study aimed to assess the central auditory processing abilities and working memory in children with non-syndromic cleft lip and palate (NSCLP) and to compare with the developed normative and craniofacially normal peers. Sixteen NSCLP children aged 7 to 12 years and fifteen craniofacially normal peers were recruited in this study. Speech perception in noise Kannada (SPIN-K), gap detection threshold (GDT), dichotic consonant-vowel (DCV), and masking level difference (MLD) tests were administered to assess various central auditory processing abilities. Working memory abilities were assessed by using forward-digit span and backward-digit span tests. The results showed significant differences in SPIN-K, dichotic CV, GDT, forward digit, and backward digit span scores between children with NSCLP and craniofacially normal peers. Thus, it can be concluded from the present study that children with NSCLP have a risk of developing auditory processing deficits. To conclude, assessment of central auditory processing abilities in children with NSCLP is recommended. [ABSTRACT FROM AUTHOR]