Publications by authors named "Deling He"
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.
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- - We studied how brain waves (neural oscillations) relate to the way stress is structured in speech and how this processing differs based on language experience, particularly focusing on English and Mandarin.
- - Our findings indicate that stress processing involves distinct brain wave patterns (delta for stress foot rate and theta for syllable rate), with stronger responses to stress cues based on amplitude rather than duration, and a hierarchical relationship between these rhythms.
- - The research highlights that native English speakers show a greater ability to synchronize with stress patterns in speech, while language experience influences how effectively the brain integrates these rhythms, suggesting a combination of bottom-up and top-down processing in understanding speech.
Purpose: Previous research has revealed considerable variation in speech rates among English speakers with Parkinson's disease (PD) with slower, faster, or similar rates than controls. The purpose of this study was to characterize speech rates of Mandarin speakers with PD and the corresponding articulation and pause characteristics explaining the speech rates to enhance rate control therapies.
Method: Eighteen Mandarin speakers with PD and 18 controls produced syllable repetitions and passage reading using their typical speech style.
Article Synopsis
- Research indicates that brain activity aligns with the natural rhythm of speech sounds (around 4-5 Hz), which helps with processing both what we hear and how we talk.
- The study measured brain responses (EEG) to speech and compared them to how individuals produced speech rhythms, finding that hearing speech influences motor output, especially at 4.5 Hz.
- Results show a strong connection between how well people perceive speech rhythms and how accurately they produce them, suggesting that the systems for hearing and speaking work together at this specific rhythm.