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  Control of speaking rate is achieved by switching between qualitatively distinct cognitive ‘gaits’: Evidence from simulation

Rodd, J., Bosker, H. R., Ernestus, M., Alday, P. M., Meyer, A. S., & Ten Bosch, L. (2020). Control of speaking rate is achieved by switching between qualitatively distinct cognitive ‘gaits’: Evidence from simulation. Psychological Review, 127(2), 281-304. doi:10.1037/rev0000172.

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supplements_to_simulating_speaking_rate_control-1.pdf (Supplementary material), 6MB
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 Creators:
Rodd, Joe1, 2, 3, Author           
Bosker, Hans R.1, 4, Author           
Ernestus, Mirjam2, 5, Author           
Alday, Phillip M.1, Author           
Meyer, Antje S.1, 4, Author           
Ten Bosch, Louis2, 6, Author           
Affiliations:
1Psychology of Language Department, MPI for Psycholinguistics, Max Planck Society, ou_792545              
2Center for Language Studies, External Organizations, ou_55238              
3International Max Planck Research School for Language Sciences, MPI for Psycholinguistics, Max Planck Society, Nijmegen, NL, ou_1119545              
4Donders Institute for Brain, Cognition and Behaviour, External Organizations, ou_55236              
5Research Associates, MPI for Psycholinguistics, Max Planck Society, ou_2344700              
6Other Research, MPI for Psycholinguistics, Max Planck Society, Nijmegen, NL, ou_55217              

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 Abstract: That speakers can vary their speaking rate is evident, but how they accomplish this has hardly been studied. Consider this analogy: When walking, speed can be continuously increased, within limits, but to speed up further, humans must run. Are there multiple qualitatively distinct speech “gaits” that resemble walking and running? Or is control achieved by continuous modulation of a single gait? This study investigates these possibilities through simulations of a new connectionist computational model of the cognitive process of speech production, EPONA, that borrows from Dell, Burger, and Svec’s (1997) model. The model has parameters that can be adjusted to fit the temporal characteristics of speech at different speaking rates. We trained the model on a corpus of disyllabic Dutch words produced at different speaking rates. During training, different clusters of parameter values (regimes) were identified for different speaking rates. In a 1-gait system, the regimes used to achieve fast and slow speech are qualitatively similar, but quantitatively different. In a multiple gait system, there is no linear relationship between the parameter settings associated with each gait, resulting in an abrupt shift in parameter values to move from speaking slowly to speaking fast. After training, the model achieved good fits in all three speaking rates. The parameter settings associated with each speaking rate were not linearly related, suggesting the presence of cognitive gaits. Thus, we provide the first computationally explicit account of the ability to modulate the speech production system to achieve different speaking styles.

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Language(s): eng - English
 Dates: 2019-09-102019-12-302020-03
 Publication Status: Issued
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 Rev. Type: Peer
 Identifiers: DOI: 10.1037/rev0000172
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Title: Psychological Review
Source Genre: Journal
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Publ. Info: Washington, etc. : American Psychological Association (PsycARTICLES)
Pages: - Volume / Issue: 127 (2) Sequence Number: - Start / End Page: 281 - 304 Identifier: ISSN: 0033-295X
CoNE: https://pure.mpg.de/cone/journals/resource/954925436473