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Differential Cognitive Strategies for Speech-in-Noise Perception: A Comparative Study Between Yoga Practitioners and
Shrinidhi Devarahalli Manoj1, Srikar Vijayasarathy2, Vishal Kooknoor1
1JSS Institute of Speech & Hearing, Mysuru, Karnataka, India.
Yoga practitioners show better speech perception in noise, particularly under challenging conditions. This improvement is linked to enhanced working memory, suggesting yoga shifts auditory processing strategies.
Area of Science:
- Cognitive Neuroscience
- Auditory Perception
- Behavioral Science
Background:
- Speech perception in noise varies among individuals and is influenced by cognitive factors like attention and memory.
- While yoga is known to improve cognitive functions, its effect on speech-in-noise perception is not well-studied.
Purpose of the Study:
- To investigate if yoga practitioners (YP) have better speech-perception-in-noise (SPIN) performance than non-practitioners (NYP).
- To determine if enhanced selective attention, working memory, and linguistic abilities mediate SPIN performance differences.
Main Methods:
- Sixty young adults (30 YP, 30 NYP) with normal hearing were assessed.
- Speech identification in noise (Kannada sentences with babble/shaped noise) and cognitive tests (Stroop, digit span, N-back, naming) were administered.
- Independent t-tests, Mann-Whitney U tests, and stepwise linear regression were used for analysis.
Main Results:
- YP showed significantly better speech identification in speech babble noise at 0 dBSNR (p = .009).
- Vocabulary predicted 26% of variance in NYP, while working memory predicted 11.6% in YP.
- No significant group differences were found in cognitive or linguistic measures.
Conclusions:
- Yoga practitioners exhibit superior speech identification in informational masking, mediated by working memory.
- Yoga practice may promote a shift towards working memory-based strategies for processing speech in noise.
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