Responsiveness of cochlear nerve in paediatric cochlear implant users with good and poor speech perception outcomes.

Objectives: The temporal responsiveness of auditory nerve fibres was assessed using the electrically evoked compound action potential refractory recovery function (eCAP-RRF). The eCAP-RRF was measured across basal, middle, and apical electrodes in paediatric cochlear implant (CI) users with varying speech perception outcomes.

Design: The eCAP-RRF measurement included absolute refractory period (ARP), relative refractory period (RRP), and maximum eCAP amplitude.

Hearing loss configurations in low- and middle-income countries.

Objective: The majority of individuals with hearing loss worldwide reside in low- and middle-income countries (LMICs), but there is limited information regarding the characteristics of hearing loss in these regions. This descriptive study aims to address this knowledge gap by analysing audiogram patterns in LMIC populations. Greater knowledge about the properties of hearing loss in LMICs allows for improved planning of interventions.

Predicting most comfortable listening levels of ESRT from ECAP thresholds in paediatric cochlear implant users.

Studies have reported a varied correlation strength between the electrically evoked compound action potential (ECAP) and electrically evoked stapedial reflex thresholds (ESRT) in cochlear implant recipients. However, there is a lack of information on the relationship between the two measures in paediatric cochlear implant users. This study was aimed to compare the ESRT and ECAP measures and determine where ECAP thresholds fall within the dynamic range of ESRT-based Maps in paediatric cochlear implant users.

Assessment of listening effort, real-life outcome, auditory working memory and attention in school-going children with cochlear implant.

Purpose: To compare the listening effort using objective test (dual-task paradigm), parents report using abbreviated version of the Speech, Spatial and Quality questionnaire (SSQ-P10) and Teachers' Evaluation of Aural/Oral Performance of Children and Ease of Listening (TEACH), working memory and attention span between children using cochlear implants (CI) and age-matched peers with normal hearing sensitivity, and assess the relationship between listening effort and real-life benefit in children using CI.

Method: Group I included 25 children with normal hearing sensitivity. Group II included 25 children with bimodal cochlear implantation with bilateral severe to profound hearing loss.

A new objective method to estimate the charge integration efficiency in cochlear implant users.

Objective: The present study aimed to objectively assess the charge integration efficiency (CIE) of the auditory nerve using electrically-evoked stapedial reflex threshold (eSRT) measurements in paediatric cochlear implant users.

Design: The eSRT was estimated in two ways: by keeping pulse width constant while increasing pulse amplitude and vice versa. The electrical dynamic range (EDR) obtained for eSRT was measured with increasing pulse amplitude (EDR) and pulse width (EDR) by calculating the difference in charge units between eSRT and behavioural thresholds; further, CIE was estimated.

Electrically evoked late latency response using single electrode stimulation and its relation to speech perception among paediatric cochlear implant users.

Introduction: Aided auditory late latency response (LLR) serves as an objective tool for evaluating auditory cortical maturation following cochlear implantation in children. While aided LLR is commonly measured using sound-field acoustic stimulation, recording electrically evoked LLR (eLLR) offer distinct advantages, such as improved stimulus control and the capability for single electrode stimulation. Hence, the study aimed to compare eLLR responses with single electrode stimulation in the apical, middle, and basal regions and to evaluate their relationship with speech perception in paediatric cochlear implant (CI) recipients.

Effect of Age and Hearing Loss on Auditory Processing Skills.

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. 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).

Efficacy of Directional Microphones in Hearing Aids Equipped with Wireless Synchronization Technology.

Objective: This study aimed to evaluate the use of directionality in hearing aids with wireless synchronization on localization and speech intelligibility in noise.

Materials And Methods: This study included 25 individuals with bilateral mild to moderate flat sensorineural hearing loss. For the localization experiment, eight loudspeakers (Genelec 8020B) arranged in a circle covering a 0-360° angle and the Cubase 6 software were used for presenting the stimulus.

One-year prevalence and risk factors of tinnitus in children with otological problems.

Introduction: The present study was conducted to find one year prevalence and risk factors of tinnitus in the children (below 18 years) who reported with the ear or hearing related complaint to All India Institute of Speech and hearing, Mysore.

Methods: A retrospective case analysis was carried out by reviewing the case files of those who visited the institute during the above period.

Results: The results shown that the tinnitus prevalence was 5.

Effect of Compression, Digital Noise Reduction and Directionality on Envelope Difference Index, Log-Likelihood Ratio and Perceived Quality.

The aim of the present study was to evaluate the use of the envelope difference index (EDI) and log-likelihood ratio (LLR) to quantify the independent and interactive effects of wide dynamic range compression, digital noise reduction and directionality, and to carry out self-rated quality measures. A recorded sentence embedded in speech spectrum noise at +5 dB signal to noise ratio was presented to a four channel digital hearing aid and the output was recorded with different combinations of algorithms at 30, 45 and 70 dB HL levels of presentation through a 2 cc coupler. EDI and LLR were obtained in comparison with the original signal using MATLAB software.

One-year prevalence and risk factors of tinnitus in older individuals with otological problems.

Objective: The present study was carried out to estimate one year prevalence and risk factors of tinnitus in the older individuals (60 years and above) who reported with the ear and/or hearing related complaint to All India Institute of Speech and hearing, Mysore.

Methods: The case files of those who visited the institute during the above said period were reviewed retrospectively.

Results: The results of the study revealed that the prevalence of tinnitus was 16.