Srikanth Nayak | Yenepoya - Academia.edu (original) (raw)

Article by Srikanth Nayak

Methods
Sixteen young adults with bilateral normal hearing sensitivity were recruited for the study, and their auditory brainstem responses were recorded using IHS Smart EP version 3.92 for active listening, passive listening with the visual task, and passive listening with visual distracter conditions.

Results
The statistical analysis of the wave-V latency and amplitude obtained from three conditions revealed no effect on the latency; however, peak V amplitude was lower in passive listening with visual distractor condition than in active listening and passive listening with visual task condition. Further attentional modulation was seen only on the contralateral montage and not on the ipsilateral montage.

Conclusion
The current study results demonstrate the attentional modulation at earlier stages of auditory processing as evidenced by the increased amplitude of peak V

Journal of Voice, 2022

Objective Teachers are the most common occupational group reporting to the voice clinics with dys... more Objective
Teachers are the most common occupational group reporting to the voice clinics with dysphonia across the globe. However, less is known about teachers’ perceptions about their voice and voice problems. Hence the present study aimed to explore teachers’ perception about their teaching voice, voice problems and vocal health-seeking behaviors.

Method
A qualitative phenomenological research design using semi-structured interviews were conducted with fifteen female primary school teachers. Participants were asked to express their perception of teaching voice, vocal health care knowledge, and vocal hygiene practices. Using inductive analysis, the researchers converted the raw data into concepts or themes and discussed.

Result
The present study results showed that teachers perceive voice as the primary tool for their profession. However, teachers consider voice problems as part of their professional commitments. Despite knowing the harmful effects of voice problems, teachers’ pay less attention to their voice problems and perceive them as usual, unavoidable and part of their profession. Due to their demanding work schedule and not getting enough support from the management, they hesitate to consult medical professionals unless it severely affects them.

Conclusions
The data obtained from this study can be used to improve the teachers’ knowledge regarding vocal health and convince the school management to extend their support for the successful implementation of the vocal health training programs for teachers.

Otorhinolaryngology Clinics, 2022

Objective: The purpose of this study was to describe the characteristics of a treatment-seeking p... more Objective: The purpose of this study was to describe the characteristics of a treatment-seeking population visiting the voice clinic of the Speech and Hearing department in a tertiary care hospital. Study design: Retrospective study. Methods: The study included patient's data who visited the voice clinic from January 2015 to January 2020. The retrospective data related to laryngeal pathology, age, gender, occupation, overall grade (G score of GRBAS), maximum phonation duration, S/Z ratio, and acoustic parameters (F0, jitter, shimmer, noise-to-harmonic ratio) were tabulated and analyzed. Results: The study results were analyzed and reported from 524 patient records. The frequency of organic/structural vocal pathology was observed to be higher (n = 468; 89.3%) than functional/nonstructural pathologies (n = 38; 7.3%). Vocal nodules (28.1%), vocal fold paralysis/ paresis (15.5%), vocal fold edema (13.7%), sulcus vocalis (7.3%), and vocal polyps (6.1%) were the most common (those occurred in more than 5% of the patients) diagnosis observed for the overall sample. Male dysphonic patients (n = 283; 54%) outnumbered the females (n = 241; 46%). The majority of patients consulting the voice clinic for dysphonia were between 25 and 64 years. The most common occupations seeking help for voice problems were homemaker, student, teacher, business, farmer, retired, singer, and laborer. The overall perceived hoarseness was significantly higher in males compared to females. Conclusion: The present study results allowed a better understanding of characteristics of treatment-seeking population for voice disorders visiting voice clinic. Identification of characteristics and diagnosis of individuals seeking treatment for voice disorders help the speech language pathologists to increase the awareness among the general population about preventive voice care strategies.

Annals of Otology and Neurotology, 2021

Introduction Caffeine is consumed everyday in a variety of ways by a large population around the... more Introduction Caffeine is consumed everyday in a variety of ways by a large population around the world, including coffee, tea, and soft drinks. Therefore, there is a significant need to explore the effects of caffeine on human auditory system. The present study aimed to investigate the effect of caffeine on cochlea using distortion product otoacoustic emission (DPOAE).
Materials and Methods Thirty-three young adults were recruited for the study. The effect of caffeine on cochlea was assessed using DPOAE at frequencies between 1 to 10 kHz before and after caffeine consumption.
Results The signal to noise ratio of DPOAE was compared before and after coffee intake, which revealed no significant differences.
Conclusion The current study results suggest that caffeine has no effect on cochlear functioning

Acta Scientific Otolaryngology, 2021

Background: Railway Travelling Ticket Examiner (TTE) is an employee in Indian railways who examin... more Background: Railway Travelling Ticket Examiner (TTE) is an employee in Indian railways who examines ‘passenger’s tickets during the journey in trains. TTEs are more susceptible to noise-induced hearing loss as they work for around 8 hours per day on the train and have continuous exposure to loud noise during their working hours. So, the present study aimed to assess the hearing sensitivity of the Indian Travelling Ticket Examiner.
Materials and Methods: The study included thirteen railway TTEs for hearing assessment. The hearing sensitivity was assessed by
obtaining a detailed case history, otoscopic examination, pure tone audiometry and tympanometry.
Results: The mean pure tone average was 22.5 ± 6.03 dBHL and 19.42 ± 7.06 dBHL in the right and left ear, respectively. All the subjects had minimal to mild sensorineural hearing loss in both ears. The degree of hearing loss increased at high frequencies (4 and 8
kHz).
Conclusion: The affected hearing thresholds in TTEs depicts a significant correlation between their service experience and hearing
loss. The positive correction between TTEs work experience and hearing loss may lead to a handicapping situation in their professional and personal life. Hence the enrollment of railway TTEs in an appropriate and effective Hearing Conservation Program is a
necessity

Radiation and environmental biophysics, 2021

Numerous studies have documented the adverse effects of high-dose radiation on hearing in patient... more Numerous studies have documented the adverse effects of high-dose radiation on hearing in patients. On the other hand, radiographers are exposed to a low dose of ionizing radiation, and the effect of a low dose of radiation on hearing is quite abstruse. Therefore, the present systematic review aimed to elucidate the effect of low-dose ionizing radiation on hearing. Two authors independently carried out a comprehensive data search in three electronic databases, including PUBMED/MEDLINE, CINAHL, and SCOPUS. Eligible articles were independently assessed for quality by two authors. Cochrane Risk of Bias tool was used assess quality of the included studies. Two articles met the low-dose radiation exposure criteria given by Atomic Energy Regulatory Board (AERB) and National Council on Radiation Protection (NCRP) guidelines. Both studies observed the behavioral symptoms, pure-tone hearing sensitivity at the standard, extended high frequencies, and the middle ear functioning in low-dose radiation-exposed individuals and compared with age and gender-matched controls. One study assessed the cochlear function using transient-evoked otoacoustic emissions (TEOAE). Both studies reported that behavioral symptoms of auditory dysfunction and hearing thresholds at extended high frequencies were higher in radiation-exposed individuals than in the controls. The current systematic review concludes that the low-dose ionizing radiation may affect the hearing adversely. Nevertheless, further studies with robust research design are required to explicate the cause and effect relationship between the occupational low-dose ionizing radiation exposure and hearing.

Elsevier, 2021

Objective The purpose of this study was to systematically review the available literature on the ... more Objective
The purpose of this study was to systematically review the available literature on the prevalence, self-reported voice symptoms, and associated risk factors for the development of voice problems in call center operators (CCO).

Study Design
a systematic review

Methods
An electronic search from five databases based on the guidance of preferred reporting of items for systematic reviews and meta-analysis (PRISMA) yielded 15 articles that reported the different aspects of voice problems in CCOs. The methodological quality of the studies was analyzed using the National Institute of Health (NIH) questionnaire.

Results
The career prevalence of voice problems in CCOs varied from 33% to 68%, whereas point prevalence was at 27%. Hoarse/rough voice was the most prominent symptom reported by most of the studies. Vocal fatigue, effortful voice, and breaks/cracks in voice were the other reported vocal symptoms. Long working hours, short breaks between calls, noisy working environment, dry work environment, work stress, stressful calls, limited breaks, prolonged use of voice, insufficient vocal rest, throat clearing, and more caffeinated beverage intake were different risk factors having significant association with telemarketers reporting vocal symptoms.

Conclusion
The present study results suggest that CCOs are at higher risk of developing voice problems. Further, the different vocal symptoms reported by CCOs are suggestive of vocal fatigue. In addition, multiple risk factors may be associated with the development of voice problems. However, the available literature is limited, and further studies with a larger sample size are required to corroborate the current findings.

European Archives of Oto-Rhino-Laryngology , 2021

Method
One hundred and forty-eight church choir singers (61 males and 85 females) between the age range of 18 and 70 years participated in the study. They completed a self-reported questionnaire addressing demographic and singing-related details, vocal symptoms, variables associated with increased risk reporting voice problems and knowledge about factors influencing vocal health.

Result
Eighty-four percent of the choir singers reported two or more vocal symptoms sometimes or more frequently while or after singing. More than half of the church choir singers had experienced vocal symptoms such as accessing notes in the upper range, loss of vocal endurance, pitch breaks, hoarseness, dryness in the throat, and discomfort in the throat. Among the different variables, systemic hydration found to have a significant association with reporting of voice problems in church choir singers. The overall knowledge regarding the factors influencing vocal health was found to be limited among the choir singers.

Conclusion
Choir singers like other professional singers experienced a higher prevalence of vocal symptoms during or after singing and exhibited limited knowledge about factors that negatively influence vocal health. Hence, there is a need to look into these singer’s vocal requirements, who usually go unnoticed.

Papers by Srikanth Nayak

Hearing, Balance and Communication, Jan 18, 2023

Introduction Auditory selective attention can enhance the processing of relevant information and ... more Introduction Auditory selective attention can enhance the processing of relevant information and inhibit irrelevant information. The attentional modulation of auditory processing is evidenced through cortical auditory event-related potentials and frequency following response. On the other hand, such attentional effects on brainstem evoked potentials showed mixed results. Hence, the current study aimed to investigate the effect of selective attention on Auditory Brainstem Response. Methods Sixteen young adults with bilateral normal hearing sensitivity were recruited for the study, and their auditory brainstem responses were recorded using IHS Smart EP version 3.92 for active listening, passive listening with the visual task, and passive listening with visual distracter conditions. Results The statistical analysis of the wave-V latency and amplitude obtained from three conditions revealed no effect on the latency; however, peak V amplitude was lower in passive listening with visual distractor condition than in active listening and passive listening with visual task condition. Further attentional modulation was seen only on the contralateral montage and not on the ipsilateral montage. Conclusion The current study results demonstrate the attentional modulation at earlier stages of auditory processing as evidenced by the increased amplitude of peak V

Speech, Language and Hearing

An International Journal of Otorhinolaryngology Clinics

Journal of Voice

The research focuses to study the perception of primary school teacher on project based learning.... more The research focuses to study the perception of primary school teacher on project based learning. The teacher's perception of project based learning is related to the way the teacher designs and implements project based learning. This research aims to: (1) assess the teacher's perception on the implementation of project based learning in primary school, and (2) to study how the teacher interprets project based learning in the implementation. The result of this research shows that: (1) every teacher has a different perception on the implementation of project based learning. Teacher's perception is seen from the understanding of meaning, role of the teacher, role of the student, the required components to be prepared, the urgency and the advantages, as well as the assessment used by the teacher. (2) The teacher's perception on the implementation of project based learning is closely related to the way the teacher interprets project based learning. The interpretation of project based learning in terms of its implementation, use of guidance, defining problem, defining project, and the context of implementation. Based on the results, it can be concluded that teacher's perception on the implementation of project based learning in primary school has special characteristics which derive different interpretations of project based learning conducted in the pilot project primary school.

Acta Scientific Otolaryngology

European Archives of Oto-Rhino-Laryngology

Purpose Choir singing is an important tradition of Christian worship across India. However, vocal... more Purpose Choir singing is an important tradition of Christian worship across India. However, vocal health issues related to the church choir singers are less addressed in the literature. Hence, this study aimed to investigate the prevalence of vocal symptoms, identify the variables associated with increased risk of voice problems and knowledge of factors influencing vocal health in church choir singers. Method One hundred and forty-eight church choir singers (61 males and 85 females) between the age range of 18 and 70 years participated in the study. They completed a self-reported questionnaire addressing demographic and singing-related details, vocal symptoms, variables associated with increased risk reporting voice problems and knowledge about factors influencing vocal health. Result Eighty-four percent of the choir singers reported two or more vocal symptoms sometimes or more frequently while or after singing. More than half of the church choir singers had experienced vocal sympto...

Acta Scientific Otolaryngology

Background: Railway Travelling Ticket Examiner (TTE) is an employee in Indian railways who examin... more Background: Railway Travelling Ticket Examiner (TTE) is an employee in Indian railways who examines ‘passenger’s tickets during the journey in trains. TTEs are more susceptible to noise-induced hearing loss as they work for around 8 hours per day on the train and have continuous exposure to loud noise during their working hours. So, the present study aimed to assess the hearing sensitivity of the Indian Travelling Ticket Examiner. Materials and Methods: The study included thirteen railway TTEs for hearing assessment. The hearing sensitivity was assessed by obtaining a detailed case history, otoscopic examination, pure tone audiometry and tympanometry. Results: The mean pure tone average was 22.5 ± 6.03 dBHL and 19.42 ± 7.06 dBHL in the right and left ear, respectively. All the subjects had minimal to mild sensorineural hearing loss in both ears. The degree of hearing loss increased at high frequencies (4 and 8 kHz). Conclusion: The affected hearing thresholds in TTEs depicts a significant correlation between their service experience and hearing loss. The positive correction between TTEs work experience and hearing loss may lead to a handicapping situation in their professional and personal life. Hence the enrollment of railway TTEs in an appropriate and effective Hearing Conservation Program is a necessity

Radiation and Environmental Biophysics

Annals of Otology and Neurotology

Introduction Caffeine is consumed everyday in a variety of ways by a large population around the ... more Introduction Caffeine is consumed everyday in a variety of ways by a large population around the world, including coffee, tea, and soft drinks. Therefore, there is a significant need to explore the effects of caffeine on human auditory system. The present study aimed to investigate the effect of caffeine on cochlea using distortion product otoacoustic emission (DPOAE). Materials and Methods Thirty-three young adults were recruited for the study. The effect of caffeine on cochlea was assessed using DPOAE at frequencies between 1 to 10 kHz before and after caffeine consumption. Results The signal to noise ratio of DPOAE was compared before and after coffee intake, which revealed no significant differences. Conclusion The current study results suggest that caffeine has no effect on cochlear functioning.

Numerous studies have documented the adverse effects of high-dose radiation on hearing in patient... more Numerous studies have documented the adverse effects of high-dose radiation on hearing in patients. On the other hand, radiographers are exposed to a low dose of ionizing radiation, and the effect of a low dose of radiation on hearing is quite abstruse. Therefore, the present systematic review aimed to elucidate the effect of low-dose ionizing radiation on hearing. Two authors independently carried out a comprehensive data search in three electronic databases, including PUBMED/ MEDLINE, CINAHL, and SCOPUS. Eligible articles were independently assessed for quality by two authors. Cochrane Risk of Bias tool was used assess quality of the included studies. Two articles met the low-dose radiation exposure criteria given by Atomic Energy Regulatory Board (AERB) and National Council on Radiation Protection (NCRP) guidelines. Both studies observed the behavioral symptoms, pure-tone hearing sensitivity at the standard, extended high frequencies, and the middle ear functioning in low-dose radiation-exposed individuals and compared with age and gender-matched controls. One study assessed the cochlear function using transient-evoked otoacoustic emissions (TEOAE). Both studies reported that behavioral symptoms of auditory dysfunction and hearing thresholds at extended high frequencies were higher in radiationexposed individuals than in the controls. The current systematic review concludes that the low-dose ionizing radiation may affect the hearing adversely. Nevertheless, further studies with robust research design are required to explicate the cause and effect relationship between the occupational low-dose ionizing radiation exposure and hearing.

Conclusion
The current study results demonstrate the attentional modulation at earlier stages of auditory processing as evidenced by the increased amplitude of peak V

Journal of Voice, 2022

Otorhinolaryngology Clinics, 2022

Annals of Otology and Neurotology, 2021

Acta Scientific Otolaryngology, 2021

Radiation and environmental biophysics, 2021

Elsevier, 2021

Study Design
a systematic review

European Archives of Oto-Rhino-Laryngology , 2021

Hearing, Balance and Communication, Jan 18, 2023

Speech, Language and Hearing

An International Journal of Otorhinolaryngology Clinics

Journal of Voice

Acta Scientific Otolaryngology

European Archives of Oto-Rhino-Laryngology

Acta Scientific Otolaryngology

Background: Railway Travelling Ticket Examiner (TTE) is an employee in Indian railways who examin... more Background: Railway Travelling Ticket Examiner (TTE) is an employee in Indian railways who examines ‘passenger’s tickets during the journey in trains. TTEs are more susceptible to noise-induced hearing loss as they work for around 8 hours per day on the train and have continuous exposure to loud noise during their working hours. So, the present study aimed to assess the hearing sensitivity of the Indian Travelling Ticket Examiner. Materials and Methods: The study included thirteen railway TTEs for hearing assessment. The hearing sensitivity was assessed by obtaining a detailed case history, otoscopic examination, pure tone audiometry and tympanometry. Results: The mean pure tone average was 22.5 ± 6.03 dBHL and 19.42 ± 7.06 dBHL in the right and left ear, respectively. All the subjects had minimal to mild sensorineural hearing loss in both ears. The degree of hearing loss increased at high frequencies (4 and 8 kHz). Conclusion: The affected hearing thresholds in TTEs depicts a significant correlation between their service experience and hearing loss. The positive correction between TTEs work experience and hearing loss may lead to a handicapping situation in their professional and personal life. Hence the enrollment of railway TTEs in an appropriate and effective Hearing Conservation Program is a necessity

Radiation and Environmental Biophysics

Annals of Otology and Neurotology

Introduction Caffeine is consumed everyday in a variety of ways by a large population around the ... more Introduction Caffeine is consumed everyday in a variety of ways by a large population around the world, including coffee, tea, and soft drinks. Therefore, there is a significant need to explore the effects of caffeine on human auditory system. The present study aimed to investigate the effect of caffeine on cochlea using distortion product otoacoustic emission (DPOAE). Materials and Methods Thirty-three young adults were recruited for the study. The effect of caffeine on cochlea was assessed using DPOAE at frequencies between 1 to 10 kHz before and after caffeine consumption. Results The signal to noise ratio of DPOAE was compared before and after coffee intake, which revealed no significant differences. Conclusion The current study results suggest that caffeine has no effect on cochlear functioning.

Numerous studies have documented the adverse effects of high-dose radiation on hearing in patient... more Numerous studies have documented the adverse effects of high-dose radiation on hearing in patients. On the other hand, radiographers are exposed to a low dose of ionizing radiation, and the effect of a low dose of radiation on hearing is quite abstruse. Therefore, the present systematic review aimed to elucidate the effect of low-dose ionizing radiation on hearing. Two authors independently carried out a comprehensive data search in three electronic databases, including PUBMED/ MEDLINE, CINAHL, and SCOPUS. Eligible articles were independently assessed for quality by two authors. Cochrane Risk of Bias tool was used assess quality of the included studies. Two articles met the low-dose radiation exposure criteria given by Atomic Energy Regulatory Board (AERB) and National Council on Radiation Protection (NCRP) guidelines. Both studies observed the behavioral symptoms, pure-tone hearing sensitivity at the standard, extended high frequencies, and the middle ear functioning in low-dose radiation-exposed individuals and compared with age and gender-matched controls. One study assessed the cochlear function using transient-evoked otoacoustic emissions (TEOAE). Both studies reported that behavioral symptoms of auditory dysfunction and hearing thresholds at extended high frequencies were higher in radiationexposed individuals than in the controls. The current systematic review concludes that the low-dose ionizing radiation may affect the hearing adversely. Nevertheless, further studies with robust research design are required to explicate the cause and effect relationship between the occupational low-dose ionizing radiation exposure and hearing.