Linear incrementality in focus and accentuation processing during sentence production: evidence from eye movements

IntroductionWhile considerable research in language production has focused on incremental processing during conceptual and grammatical encoding, prosodic encoding remains less investigated. This study examines whether focus and accentuation processing in speech production follows linear or hierarchi...

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Main Authors: Zhenghua Zhang, Qingfang Zhang
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-01-01
Series:Frontiers in Human Neuroscience
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Online Access:https://www.frontiersin.org/articles/10.3389/fnhum.2024.1523629/full
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author Zhenghua Zhang
Qingfang Zhang
author_facet Zhenghua Zhang
Qingfang Zhang
author_sort Zhenghua Zhang
collection DOAJ
description IntroductionWhile considerable research in language production has focused on incremental processing during conceptual and grammatical encoding, prosodic encoding remains less investigated. This study examines whether focus and accentuation processing in speech production follows linear or hierarchical incrementality.MethodsWe employed visual world eye-tracking to investigate how focus and accentuation are processed during sentence production. Participants were asked to complete a scenario description task where they were prompted to use a predetermined sentence structure to accurately convey the scenario, thereby spontaneously accentuate the corresponding entity. We manipulated the positions of focus with accentuation (initial vs. medial) by changing the scenarios. The initial and medial positions correspond to the first and second nouns in sentences like “N1 is above N2, not N3.”ResultsOur findings revealed that speech latencies were significantly shorter in the sentences with initial focus accentuation than those with medial focus accentuation. Furthermore, eye-tracking data demonstrated that speakers quickly displayed a preference for fixating on initial information after scenarios onset. Crucially, the time-course analysis revealed that the onset of the initial focus accentuation effect (around 460 ms) preceded that of the medial focus accentuation effect (around 920 ms).DiscussionThese results support that focus and accentuation processing during speech production prior to articulation follows linear incrementality rather than hierarchical incrementality.
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spelling doaj-art-71a566626cdd49e08db37eec60afc51b2025-01-07T06:40:29ZengFrontiers Media S.A.Frontiers in Human Neuroscience1662-51612025-01-011810.3389/fnhum.2024.15236291523629Linear incrementality in focus and accentuation processing during sentence production: evidence from eye movementsZhenghua ZhangQingfang ZhangIntroductionWhile considerable research in language production has focused on incremental processing during conceptual and grammatical encoding, prosodic encoding remains less investigated. This study examines whether focus and accentuation processing in speech production follows linear or hierarchical incrementality.MethodsWe employed visual world eye-tracking to investigate how focus and accentuation are processed during sentence production. Participants were asked to complete a scenario description task where they were prompted to use a predetermined sentence structure to accurately convey the scenario, thereby spontaneously accentuate the corresponding entity. We manipulated the positions of focus with accentuation (initial vs. medial) by changing the scenarios. The initial and medial positions correspond to the first and second nouns in sentences like “N1 is above N2, not N3.”ResultsOur findings revealed that speech latencies were significantly shorter in the sentences with initial focus accentuation than those with medial focus accentuation. Furthermore, eye-tracking data demonstrated that speakers quickly displayed a preference for fixating on initial information after scenarios onset. Crucially, the time-course analysis revealed that the onset of the initial focus accentuation effect (around 460 ms) preceded that of the medial focus accentuation effect (around 920 ms).DiscussionThese results support that focus and accentuation processing during speech production prior to articulation follows linear incrementality rather than hierarchical incrementality.https://www.frontiersin.org/articles/10.3389/fnhum.2024.1523629/fullsentence productionfocus and accentuation processinglinear incrementalityhierarchical incrementalityeye movements
spellingShingle Zhenghua Zhang
Qingfang Zhang
Linear incrementality in focus and accentuation processing during sentence production: evidence from eye movements
Frontiers in Human Neuroscience
sentence production
focus and accentuation processing
linear incrementality
hierarchical incrementality
eye movements
title Linear incrementality in focus and accentuation processing during sentence production: evidence from eye movements
title_full Linear incrementality in focus and accentuation processing during sentence production: evidence from eye movements
title_fullStr Linear incrementality in focus and accentuation processing during sentence production: evidence from eye movements
title_full_unstemmed Linear incrementality in focus and accentuation processing during sentence production: evidence from eye movements
title_short Linear incrementality in focus and accentuation processing during sentence production: evidence from eye movements
title_sort linear incrementality in focus and accentuation processing during sentence production evidence from eye movements
topic sentence production
focus and accentuation processing
linear incrementality
hierarchical incrementality
eye movements
url https://www.frontiersin.org/articles/10.3389/fnhum.2024.1523629/full
work_keys_str_mv AT zhenghuazhang linearincrementalityinfocusandaccentuationprocessingduringsentenceproductionevidencefromeyemovements
AT qingfangzhang linearincrementalityinfocusandaccentuationprocessingduringsentenceproductionevidencefromeyemovements