Effect of Carnatic Music Listening Training on Speech in Noise Performance in Adults

Listening Effort for Speech in Noise Perception Using Pupil Dilation: A Comparison Among Percussionists, Non-Percussionists, and Non-Musicians

BACKGROUND AND OBJECTIVES

Most studies in literature attribute the benefits of musical training on speech in noise (SIN) perception to "experience-based" plasticity, which assists in the activation of speech-processing networks. However, whether musicianship provides an advantage for the listening effort (LE) required to comprehend speech in degraded environments has received less attention. The current study aimed to understand the influence of Indian classical music training on SIN perception and its related LE across percussionists, non-percussionists, and non-musicians.

SUBJECTS AND METHODS

A quasi-experiment was conducted on 16 percussionists, 17 non-percussionists, and 26 non-musicians aged 18-35 years with normal hearing. In phase 1, musical abilities were assessed using Mini-Profile of Music Perception Skills (Mini-PROMS). Phase 2 examined SIN using Tamil Phonemically-Balanced Words and Tamil Matrix Sentence Test at +5 dB, 0 dB, and -5 dB SNR and LE using pupillometry, measuring pupil dilations with an eye-tracker.

RESULTS

Fractional Logit and Linear Regression models demonstrated that percussionists outperformed non-percussionists in Tuning and Speed subsets of Mini-PROMS. Percussionists outperformed non-percussionists and non-musicians in SIN and LE at -5 dB SNR for words and at 0 dB and -5 dB SNR for sentences.

CONCLUSIONS

Percussionists have the greatest advantage in decoding SIN with reduced LE followed by non-percussionists and non-musicians, demonstrating musician-advantage in most challenging listening conditions.

M, Jagtap T, Issac TG. Music and the aging brain - Exploring the role of long-term Carnatic music training on cognition and gray matter volumes

Objectives

Aging is a natural process and is often associated with an increased incidence of cognitive impairment. Physical exercise, diet, and leisure activities (music, dance, and art) are some of the lifestyle factors that contribute to healthy aging. The present study aims to explore the differences in cognitive functioning between aging individuals involved in musical activity throughout their lifetime and the ones who were not.

Materials and Methods

Fifty-one healthy elderly individuals (50-80 years of age) residing in an urban locality were selected for the study from the Tata Longitudinal Study of Aging cohort. Participants were divided into two groups: Active musicians trained in Carnatic music for more than five years (n = 18) and age-matched non-musicians (n = 33). Addenbrooke cognitive examination-III, Hindi mental status examination, and trail-making test-B (TMT-B) were used to assess cognitive functioning. A Generalized Linear Regression Model was performed including covariates such as gender, age, and years of education. We also looked at the available brain magnetic resonance imaging data of a subset of our study population to inspect the volumetric differences between musicians and non-musicians.

Results

Our results showed that musicians had significantly better visuospatial abilities as compared to non-musicians (P = 0.043). Musicians (130.89 ± 45.16 s) also took less time to complete the TMT-B task than non-musicians (148.73 ± 39.65 s), although it was not a statistically significant difference (P =0.150). In addition, brain imaging data suggested that musicians had increased gray matter volumes in the right precuneus, right post-central gyrus, right medial and superior frontal gyrus, right orbital gyrus, left middle temporal gyrus, left cuneus, left fusiform gyrus, and bilateral cingulate gyrus.

Conclusion

Our findings are indicative of music being an important attribute in improving cognitive reserve and predicting cognitive resilience. These findings pave the way to explore the utility of non-pharmacological interventions, such as Music Therapy (especially Carnatic music in the Indian context), as a potential factor for improving cognitive reserve in elderly individuals.

Musician-Advantage on Listening Effort for Speech in Noise Perception: A Dual-Task Paradigm Measure

BACKGROUND AND OBJECTIVES

Speech in noise (SIN) perception is essential for effective day-to-day communication, as everyday conversations seldom transpire in silent environments. Numerous studies have documented how musical training can aid in SIN discrimination through various neural-pathways, such as experience-dependent plasticity and overlapping processes between music and speech perception. However, empirical evidence regarding the impact of musical training on SIN perception remains inconclusive. This study aimed to investigate whether musicians trained in South Indian classical "Carnatic" style of music exhibited a distinct advantage over their non-musician counterparts in SIN perception. The study also attempted to explore whether the listening effort (LE) associated in this process was different across musicians and non-musicians, an area that has received limited attention.

SUBJECTS AND METHODS

A quasi-experimental design was employed, involving two groups comprising 25 musicians and 35 non-musicians, aged 18-35 years, with normal hearing. In phase 1, participants' musical abilities were assessed using the Mini-Profile of Music Perception Skills (Mini-PROMS). In phase 2, SIN abilities were tested using the Tamil phonemically balanced words and Tamil Matrix Sentence Test at -5 dB, 0 dB, and +5 dB SNR. Phase 3 tested LE using a dual-task paradigm including auditory and visual stimuli as primary and secondary tasks.

RESULTS

Fractional logit and linear regression models demonstrated that musicians outperformed non-musicians in the Mini-PROMS assessment. Musicians also fared better than non-musicians in SIN and LE at 0 dB SNR for words and +5 dB SNR for sentences.

CONCLUSIONS

The findings of this study provided limited evidence to support the claim that musical training improves speech perception in noisy environments or reduces the associated listening effort.

Management of Auditory Processing Difficulties Virtually: A Case Study

Difficulty hearing in the presence of background noise is a common complaint heard by audiologists. This can be accompanied by additional difficulty in classrooms and other difficult listening situations. This was recently exacerbated by the coronavirus disease 2019 (COVID-19) shutdowns and the accompanying mask usage and virtual meetings. This article describes one such patient seen during the recent shutdown. This patient reported difficulty hearing during her college coursework for her music performance major. She was an established otology patient with an extensive middle ear history including multiple surgeries. During the shutdown, she virtually consulted with the auditory processing disorders clinic at the recommendation of her otologist to discuss her college-related difficulty and pursue educational accommodations. Challenges and solutions for seeing this patient and other, similar patients virtually are discussed as well as a review of how this patient proceeded and how the knowledge gained from this patient could apply to others with similar concerns.