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Rhythmic prediction in speech perception: are our brain waves in sync with our native language?

Project description

Melody of a language and active speech prediction

Intonation, tone, stress or rhythm are all features that build the ‘melody’ of a language. Also known as the prosody of a language, it helps the listener to focus on important words and to put sentences into phrases and phrases into words. It basically reflects a language’s linguistic structure. It also helps the listeners to predict the next piece of information. However, little is known about how prediction and prosodic rhythm are linked to the neural activity of a listener. The EU-funded RhythmicPrediction project will use the latest neuroscientific data on speech processing. It will combine the findings with prosodic typology to explain the role of a native language in the neural oscillator activity patterns and the relation between cortical oscillations and prosody perception.

Objective

Speech has rhythmic properties that widely differ across languages. When we listen to foreign languages, we may perceive them to be more musical, or rather more rap-like than our own. Even if we are unaware of it, the rhythm and melody of language, i.e. prosody, reflects its linguistic structure. On the one hand, prosody emphasizes content words and new information with stress and accents. On the other hand, it is aligned to phrase edges, marking them with boundary tones. Prosody hence helps the listener to focus on important words and to chunk sentences into phrases, and phrases into words. In fact, prosody is even used predictively, for instance to time the onset of the next word, the next piece of new information, or the total remaining length of the utterance, so the listener can seamlessly start their own speaking turn.
So, the listener, or rather their brain, is actively predicting when important speech events will happen, using prosody. How prosodic rhythms are exploited to predict speech timing, however, is unclear. No link between prosody and neural predictive processing has yet been empirically made. One hypothesis is that rhythm, such as the alternation of stressed and unstressed syllables, helps listeners time their attention. Similar behavior is best captured by the notion of an internal oscillator which can be set straight by attentional spikes. While neuroscientific evidence for the relation of neural oscillators to speech processing is starting to emerge, no link to the use of prosody nor predictive listening exists, yet. Furthermore, it is still unknown how native language knowledge affects cortical oscillations, and how oscillations are affected by cross-linguistic differences in rhythmic structure. The current project combines the standing knowledge of prosodic typology with the recent advances in neuroscience on cortical oscillations, to investigate the role of internal oscillators on native prosody perception, and active speech prediction.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)

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Call for proposal

(opens in new window) H2020-MSCA-IF-2019

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Coordinator

UNIVERSITE DE GENEVE
Net EU contribution
€ 191 149,44
Address
RUE DU GENERAL DUFOUR 24
1211 Geneve
Switzerland
Region
Schweiz/Suisse/Svizzera Région lémanique Genève
Activity type
Higher or Secondary Education Establishments
Links
Total cost
€ 191 149,44