Cantonese advantage on English stress perception: Constraints and neural underpinnings

Cross-linguistic and acoustic-driven effects on multiscale neural synchrony to stress rhythms

We investigated how neural oscillations code the hierarchical nature of stress rhythms in speech and how stress processing varies with language experience. By measuring phase synchrony of multilevel EEG-acoustic tracking and intra-brain cross-frequency coupling, we show the encoding of stress involves different neural signatures (delta rhythms = stress foot rate; theta rhythms = syllable rate), is stronger for amplitude vs. duration stress cues, and induces nested delta-theta coherence mirroring the stress-syllable hierarchy in speech. Only native English, but not Mandarin, speakers exhibited enhanced neural entrainment at central stress (2 Hz) and syllable (4 Hz) rates intrinsic to natural English. English individuals with superior cortical-stress tracking capabilities also displayed stronger neural hierarchical coherence, highlighting a nuanced interplay between internal nesting of brain rhythms and external entrainment rooted in language-specific speech rhythms. Our cross-language findings reveal brain-speech synchronization is not purely a "bottom-up" but benefits from "top-down" processing from listeners' language-specific experience.

What Is "Music" in Music-to-Language Transfer? Musical Ability But Not Musicianship Supports Cantonese Listeners' English Stress Perception

PURPOSE

This study investigates how Cantonese language experience influences the potential effects of (a) musicianship and (b) musical ability on English stress perception.

METHOD

The sample contained 124 participants, evenly split into Cantonese musician, Cantonese nonmusician, English musician, and English nonmusician groups. They completed the English stress discrimination task, English stress sequence recall task, Musical Ear Test, and nonverbal intelligence task. Following the musicianship-based analysis, 44 Cantonese and English listeners were reassigned to four groups based on their musical ability-Cantonese high musical ability, Cantonese low musical ability, English high musical ability, and English low musical ability groups.

RESULTS

Musicianship-based analysis on English stress perception revealed a significant interaction between musicianship and language. Specifically, musicians outperformed nonmusicians only among the English but not the Cantonese listeners. By contrast, ability-based analysis showed significant main effects of musical ability and language. For both Cantonese and English listeners, those with a high musical ability outperformed those with a low musical ability. Regardless of musical ability, Cantonese listeners outperformed English listeners. Correlational analyses yielded consistent findings.

CONCLUSIONS

This study has found cross-sectional evidence that musical ability, but not musicianship, facilitates Cantonese English as a second language (ESL) listeners' English stress perception. From a theoretical perspective, the current findings motivate two potential additions to the OPERA (Overlap, Precision, Emotion, Repetition, and Attention) hypothesis for music-to-language transfer-unsaturation and utilization. Practically, the findings cast doubt on the application of nonperceptual based instrumental music training to enhance Cantonese ESL learners' perceptual learning of English stress.

SUPPLEMENTAL MATERIAL

https://doi.org/10.23641/asha.21266478.

Towards a Native OPERA Hypothesis: Musicianship and English Stress Perception

Musical experience facilitates speech perception. French musicians, to whom stress is foreign, have been found to perceive English stress more accurately than French non-musicians. This study investigated whether this musical advantage also applies to native listeners. English musicians and non-musicians completed an English stress discrimination task and two control tasks. With age, non-verbal intelligence and short-term memory controlled, the musicians exhibited a perceptual advantage relative to the non-musicians. This perceptual advantage was equally potent to both trochaic and iambic stress patterns. In terms of perceptual strategy, the two groups showed differential use of acoustic cues for iambic but not trochaic stress. Collectively, the results could be taken to suggest that musical experience enhances stress discrimination even among native listeners. Remarkably, this musical advantage is highly consistent and does not particularly favour either stress pattern. For iambic stress, the musical advantage appears to stem from the differential use of acoustic cues by musicians. For trochaic stress, the musical advantage may be rooted in enhanced durational sensitivity.

Musicianship Influences Language Effect on Musical Pitch Perception

Given its practical implications, the effect of musicianship on language learning has been vastly researched. Interestingly, growing evidence also suggests that language experience can facilitate music perception. However, the precise nature of this facilitation is not fully understood. To address this research gap, I investigated the interactive effect of language and musicianship on musical pitch and rhythmic perception. Cantonese and English listeners, each divided into musician and non-musician groups, completed the Musical Ear Test and the Raven’s 2 Progressive Matrices. Essentially, an interactive effect of language and musicianship was found on musical pitch but not rhythmic perception. Consistent with previous studies, Cantonese language experience appeared to facilitate musical pitch perception. However, this facilitatory effect was only present among the non-musicians. Among the musicians, Cantonese language experience did not offer any perceptual advantage. The above findings reflect that musicianship influences the effect of language on musical pitch perception. Together with the previous findings, the new findings offer two theoretical implications for the OPERA hypothesis—bi-directionality and mechanisms through which language experience and musicianship interact in different domains.