Mr Rajesh Ranjan

Assistant Professor - Senior Scale

Department of Audiology & Speech Language Pathology (at Mangalore)


    • Teaching: Undergraduate and Post graduate students
    • Clinical supervision and patient care
    • Coordinator for I BASLP
    • Incharge of Cochlear Implantation
    • Incharge of EGI Lab.
    • Student guardian for I BASLP
    • Guide: Dissertations/Conference presentations/Clinical & Journal clubs 


Subject Subject code Semester
Audiology B 1. 3 First semester BASLP
Electrophysiological Assessment A 203 Second semester - M.Sc (Audiology)
Audiology in Practice B.6.4 Sixth semester - BASLP


Degree Specialisation Institute Year of passing
MASLP Audiology & Speech Language Pathology COSH, Dr M V Shetty Memorial Trust 2005
BSc (Speech and Hearing) Audiology & Speech Language Pathology All India Institute of Speech and Hearing 1999


Institution / Organisation Designation Role Tenure
Dept of Audiology & SLP, KMC, Mangalore Assistant Professor (Senior scale) Teaching, Clinical Management & Research Dec 2010 – till date
Dept of Audiology & SLP, KMC, Mangalore Assistant Professor Teaching, Clinical Management & Research Nov 2009 – Dec 2010
Dept of Audiology & SLP, KMC, Mangalore Lecturer Teaching, Clinical Management & Research Oct 2006 – Nov 2009
R & R Army Hospital Audiologist and Speech Language Pathologist. Diagnostic Evaluation for Audiology and SLP, Speech Therapy, Auditory Verbal Therapy, Cochlear implant intra operative and post-operative monitoring. June 2005 – May 2006
DDRC, Gangatok, Sikkim Audiologist and SLP Diagnostic Evaluation and Management for Audiology and SLP, Speech Therapy. Jan 2001 – May 2003
IIHE & R, Beur Patna, Bihar Audiologist and Speech Language Pathologist Assessment, evaluation and management for hearing disorder including assessment and fitting of hearing devices. May 2000 – Nov 2000


Area of Interest

Evoked potentials, Cognitive potentials

Area of Expertise

Cochlear implantation

Area of Research

Diagnostic Audiology, Cognitive potentials

Professional Affiliations & Contributions

  • Member of Rehabilitation Council of India (RCI), 2001
  • Member of Indian Speech and Hearing Association (ISHA)
  • Member of cochlear implant group of India (CIGI)
  • Member of Dakshina Kannada Indian speech and hearing association (DK ISHA)

DPOAE findings in HIV Infected individuals

2008-10-04 The Online Journal of health and allied sciences, 7(1), 9 Rajesh Ranjan Jayashree S Bhat

Phonological processes in English speaking Indian Children

2009-07-07 Language in India, Vol 9, 16 –24 Rajesh Ranjan

Speech recognition with temporal envelope and fine structure cues under stimulate reverberation

2010-01-06 International Journal of Computational Intelligence and Health care Informatics, Vol. 3 (1), 41-44 Arivudai Nambi. P Jayashree S Bhat Rajesh Ranjan

Cognition and Speech perception in noise

2011-14-12 (Language in India, Vol 1, 542-545 Rajesh Ranjan Ajith Kumar U Jayashree S Bhat

Auditory Brainstem Response: Objective Measures Show Promise for Screening

2013-20-03 The hearing Journal, Vol. 66 (3), 24-27 Arivudai Nambi Jayashree S Bhat Rajesh Ranjan Anshul Arora

Effect of Type II Diabetes on Speech Perception in Noise

2014-24-04 International Journal of Innovative Research and Development, 3 (5), 31-37 Gagan Bajaj Sujay P Jayashree S Bhat Rajesh Ranjan

Vestibular Evoked Myogenic Potential Response in Acquired Sensory Neural Hearing Loss

2014-01-05 International Journal of Innovative Research and Development, 3(4), 51-54 Mohan K K Ajith K Rajesh Ranjan

Fine structure distortion product otoacoustic emission during pregnancy

2016-01-10 Rajesh Ranjan Jayashree S Bhat Chris Joseph

International Journal of Pharma and Bio-Sciences. 7(4): (B) 389-394

Perception of consonants in speech shaped noise among young and Middle-Aged Adults

Mohan Kumar K Deepthi Thomas Jayashree S Bhat Rajesh Ranjan

J Int Adv Otol 2016;12(2): 184-188

Psycoacoustical measures in individuals with congenital visual impairment

2017-28-12 Kaushlendra Kumar Teenu Thomas Jayashree S Bhat Rajesh Ranjan

International Tinnitus Journal. 2017;21(2):185-189

Impact of noise on hearing of individuals working in the temple

2018-01-12 Anuradha Shastry Rajesh Ranjan Jayashree S Bhat

Indian Journal of public health research and development. 2018; Dec;9:208--212

Effect of Sudersankriya yoga on auditory processing abilities and speech perception in noise among middle aged adults

2018-01-12 Meenakshi Gopinath Jayashree S Bhat Rajesh Ranjan

Indian Journal of public health research and development. 2018; Dec;9:213--218

An acoustic and perceptual comparison of multichannel and channel free processing in hearing aids

2016-20-02 2014 – 2016 II MASLP/Dissertation Gurudas N V Rajesh Ranjan Mohan K

Fine spectral changes in otoacoustic emission during pregnancy

2015-11-02 2013 – 2015 II MASLP/Dissertation Chris J Rajesh Ranjan

Development of questionnaire for dizziness related quality of life in Kannada

2015-11-02 2013 – 2015 II MASLP/Dissertation Priyanka V N Rajesh Ranjan

Effect of hearing loss on vestibular evoked myogenic potential response

2013-08-02 2011 – 2013 II MASLP/Dissertation Ajith K Rajesh Ranjan Mohan K

Effect of type 2 diabetes on temporal processing and speech perception

2013-01-02 2011 – 2013 II MASLP/Dissertation Sujay P Rajesh Ranjan Gagan Bajaj

Association between blood groups and fine spectral changes in DPOAE and its impact on aging

2014-10-02 2012 – 2014 II MASLP/Dissertation Abin Rajesh Ranjan

Effect of language proficiency on speech perception in noise by Kannada-English bilinguals

2012-10-02 2010 – 2012 II MASLP/Dissertation Vibha Rajesh Ranjan Jayashree S Bhat

Effect of working memory training on speech perception

2012-10-02 2010 – 2012 II MASLP/Dissertation Krupa Rajesh Ranjan Jayashree S Bhat

Importance of Frequency and amplitude modulation cues for speech recognition under reverberation: Implication for cochlear implants

2009-09-02 ISHAcon 2009 Rajesh Ranjan Arivudai Nambi Jayashree S Bhat Prakarthi U

DPOAE in HIV infected – A prelimnary Study

2010-10-02 ISHAcon 2010 Rajesh Ranjan Jayashree S Bhat Usman Jasana

Relationship between consonant recognition in noise with auditory processing & working memory capacity

2015-10-02 2013 – 2015 II MASLP/Dissertation Deepthi Thomas Rajesh Ranjan Mohan Kumar Kalaiah

An acoustic and perceptual comparison of multi-channel and channel free processing in hearing aids

2016-10-02 2014 – 2016 II MASLP/Dissertation Gurudas Mohan Kumar K Rajesh Ranjan

Consonant perception in individuals with cochlear hearing loss

2017-10-02 2015 – 2017 II MASLP/Dissertation Amrin T K Mohan Kumar K Rajesh Ranjan

Effect of SudarshanKriya Yoga on some auditory processing abilities and speech perception in noise among middle aged adults

2017-09-02 2015 – 2017 II MASLP/Dissertation Meenakshi Gopinath Rajesh Ranjan

Effect of yoga practice on auditory event related potentials (p300)

2018-10-02 2016 – 2018 II MASLP/Dissertation Ashwini P. R Rajesh Ranjan

Cortical event related potential (p300) in above average and below average academic performers

2018-09-02 2016 – 2018 II MASLP/Dissertation Vishnu V K Rajesh Ranjan

Comparision of otoacoustic emissions among normal hearing middle age adults in sudarsankriya yoga practitioners and non-practitioners

2019-20-02 Adhira Vinod Rajesh Ranjan

2018 – 2019 II MASLP/Dissertation

    Hearing loss and Cochlear implants: What a parents of children with hearing loss should know? - Aarogyavani


    Hearing loss is a partial or total inability to hear sound and it is also referred to as hearing impairment. Hearing loss may occur in one or both ears and may be due to congenital or acquired causes. Congenital hearing loss means that the hearing loss was present right from the time of birth in children and often due to genetic and non-genetic factors. Children can also be affected by acquired hearing loss i.e., hearing loss occurring any time after birth. Acquired hearing loss is often due to ruptured ear drum, excessive noise exposure, and frequent ear infections, etc. In children, whether it is congenital or acquired hearing problems, the ability to learn spoken language is affected and untreated hearing loss often leads to irritability, negativism, anger, social rejection and loneliness, reduced alertness and increased risk to personal safety, reduced job performance and earning power, and diminished psychological, educational and overall health. In most cases, acquired hearing loss can be treated with medical interventions. But some individuals develop permanent hearing loss involving cochlea and auditory pathways leading to severe to profound hearing loss and often cannot be treated with medical interventions. Moreover, most of the children with congenital hearing loss affects hearing up to severe to profound degree. Therefore, hearing aids or cochlear implants will be a recommended form of treatment in these children depending on the type and severity of hearing loss. Some children with profound hearing impairment manage verbal communication skills through amplification devices like traditional hearing aids. However, some do not benefit from hearing aids and affect the development of speech and language skills. Failure to develop adequate speech and language skills can have a significant impact on the educational and employment opportunities of these individuals. However, hearing difficulties up to moderately severe degree can obtain good benefits from conventional hearing aids in most individuals. A cochlear implant is an electronic device that is placed into the inner ear through surgery and helps to replace the functions of inner ear such as cochlea. These cochlear implants stimulate the auditory nerve, thereby help in sound perception. These cochlear implants provide good benefits to both congenital as well as acquired hearing impaired children, who obtained limited benefits from hearing aids. * Benefits from Cochlear Implant Children using cochlear implants from younger age have shown better improvement in their auditory perception skills and sound detection abilities. Those children who used multichannel cochlear implants performed better than those of their non- implanted children who used hearing aids. These children who used multichannel cochlear implants have shown improvements in speech perception and speech production over a period of time. Research also have shown significant improvement in speech & language skills along with the improvement in overall speech intelligibility in children following cochlear implantation in congenital hearing impairment. However, large individual differences are reported in cochlear implant users due to the reasons such as age of onset of hearing loss, age at which cochlea implant is fitted, duration of cochlear implant usage, and the speech language training received. * Candidacy of cochlear implants Cochlear implantation is a team approach in which various professionals are involved such as ENT, Radiologist, Audiologist, Speech language pathologist and Auditory verbal therapist. In determination of cochlear implant suitability, precise assessment of hearing loss by an audiologist is a most important factor. The audiologist uses age-appropriate tests (behavioral and physiological measures) to determine the nature and the type of hearing loss. Bilateral severe-to-profound sensorineural hearing loss in pure tone audiogram, confirmed by acoustic reflex data with auditory brain stem response often determines the audiological candidacy for cochlear implantation. Then appropriate amplification devices and auditory verbal therapy training has to be done followed by repeated behavioral audiological test. Only after receiving sufficient training after hearing aid fitting, a cochlear implant candidacy is often indicated. Only those people who receive limited or no benefit from hearing aid and having congenital or acquired severe to profound sensorineural hearing loss are the candidates for cochlear implants. Candidates for cochlear implantation require medical evaluation by a ENT professional. The patient should be free from active ear diseases, have an intact ear drum, and should tolerate general anesthesia. CT or MRI scan, or both, may be necessary to identify the implantable ear. * Management of Children with Cochlear Implants Children who are fitted with cochlear implants require frequent consultation with Audiologist and ENT. Audiologists programs the cochlear implant parameters and monitors the device performance. Audiologists also monitor the improvement in speech perception following implantation. Medical evaluation by ENT professional should also be performed to monitor the medical condition of the child or an adult. Training is one of the important segments in children after cochlear implantation to maximize the benefits that they receive from it. Habilitation training should include development of listening behaviors within meaningful communicative contexts. Speech pathologists often interact with audiologists and enhances the benefits what they receive. We at Department of Audiology and Speech Language Pathology, Attavara, Kasturba Medical College, Mangalore is one of the premier institutions providing services not only related to speech and hearing disorders but also rendering services in developing human resource who can help these disordered population. At our center, we provide services in identification, assessment and rehabilitation related to speech and hearing disorder. Our center is identified as one of centers for implementation of ADIP scheme for cochlear implant under central government scheme. We have been actively involved in cochlear implantation since 2006 and now since 2016 under ADIP scheme. Under this scheme cochlear implantation and rehabilitation services are provided for free of cost by central government however candidacy assessment has to be borne by a cochlear implantee. At present, these services are available for children below 6 years and with family monthly income of less than Rs.15000 per month. We at our department have implemented this scheme successfully. We are also a part of State government cochlear implant team at Government Wenlock Hospital. Moreover, hearing aids under ADIP scheme are also available at District disability rehabilitation center at Government Wenlock hospital. So, consulting an Audiologist at the right time and early in life is the key to success in improving communication skills in patients with hearing impairment.