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ORIGINAL ARTICLE
Year : 2016  |  Volume : 32  |  Issue : 1  |  Page : 57-60

Prevalence of mismatch negativity with tonal stimuli in normal-hearing individuals


Department of Audiology, All India Institute of Speech and Hearing, Mysore, Karnataka, India

Correspondence Address:
Himanshu Kumar Sanju
Department of Audiology, All India Institute of Speech and Hearing, Mysore-6, Karnataka
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1012-5574.175857

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Electrophysiological measures are one of the objective modes of assessment to check the integrity of the auditory function. The endogenous potentials like mismatch negativity (MMN) are responses which are due to internal events such as cognition or perception. In clinical practice and researches it was observed that MMN not present in all normal hearing individual. So, there is a need to study prevalence of MMN in normal population, which helps the researchers and clinicians in interpreting clinical findings. 50 participants recruited in the age range of 18-25 years. MMN was recorded with pair of stimuli. The pair was having /1000Hz/ and /1100Hz/ with /1000Hz/ as frequent stimulus and /1100Hz/ as the infrequent stimulus. Out of 50 normal hearing subjects, MMN was present only in 33 normal hearing subjects (66%). So clinician should be cautious during interpretation of clinical findings using MMN in abnormal population.


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