Cognition and Speech Perception in Noise

*, Rajesh Ranjan and Bhat, Jayashree and *, Ajith Kumar (2011) Cognition and Speech Perception in Noise. Language in India, 11. pp. 542-546. ISSN 1930-2940

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Background: Daily communication requires individual’s ability to understand speech in varying degrees of background noise. The normal hearing individuals usually does this with remarkable success without much problems even in even in adverse listening condition. However, elderly listeners exhibit difficulty in understanding speech, particularly in background noise or reverberation. It is unclear at present whether auditory or cognitive mechanisms responsible for reduced recognition ability in elderly listeners. Methods: A total of 30 participants participated in the study. They were divided in to two groups (i) 15 young adults in the age range of 20-30 years (ii) 15 elderly participants in the age range of 50-65 years. All the participants had pure tone thresholds less than 25dBHL at octave frequencies Subsequently none of the selected participants had difficulty in understanding speech in daily listening conditions and had no recent history of otologic disease, history or presence of neurological symptoms. Min mental state examination and Speech in Noise test was administered to assess the cognitive abilities and speech perception ability in both the groups. Result: Speech in noise perception abilities was similar in more favourable signal to noise ratio (SNRs) in both the groups. However, at higher SNRs (less favourable) elderly participants performed significantly poorer compared to young individuals. Conclusion: We hypothesize that reduced temporal processing abilities in older individuals might have contributed to poor speech understanding abilities in elderly individuals.

Item Type: Article
Uncontrolled Keywords: Coginition, Mini mental state examination (MMSE), Speech in Noise(SIN), &Signal to Noise Ratio (SNR).
Subjects: Allied Health > Mangalore Campus > Speech and Hearing
Depositing User: KMCMLR User
Date Deposited: 14 Mar 2013 09:42
Last Modified: 14 Mar 2013 09:42

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