文章基本信息

标题：Parallels in Processing Boundary Cues in Speech and Action
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作者：Hilton, Matt ; Räling, Romy ; Wartenburger, Isabell 等
期刊名称：Frontiers in Psychology
电子版ISSN：1664-1078
出版年度：2019
卷号：10
页码：1-12
DOI：10.3389/fpsyg.2019.01566
出版社：Frontiers Media
摘要：Speech and action sequences are continuous streams of information that can be segmented into sub-units. In both domains, this segmentation can be facilitated by perceptual cues contained within the information stream. In speech, prosodic cues (e.g., a pause, pre-boundary lengthening, and pitch rise) mark boundaries between words and phrases, while boundaries between actions of an action sequence can be marked by kinematic cues (e.g., a pause, pre-boundary deceleration). The processing of prosodic boundary cues evokes an ERP component known as the Closure Positive Shift (CPS), and it is possible that the CPS reflects domain-general cognitive processes involved in segmentation, given that the CPS is also evoked by boundaries between subunits of non-speech auditory stimuli. This study further probed the domain-generality of the CPS and its underlying processes by investigating electrophysiological correlates of the processing of boundary cues in sequences of spoken verbs (auditory stimuli; Experiment 1; N=23 adults) and actions (visual stimuli; Experiment 2; N=23 adults). The EEG data from both experiments revealed a CPS-like broadly distributed positivity during the 250 ms prior to the onset of the post-boundary word or action, indicating similar electrophysiological correlates of boundary processing across domains, suggesting that the cognitive processes underlying speech and action segmentation might also be shared.
关键词：Closure Positive Shift (CPS); speech segmentation; Event - Related Potentials (ERP); action segmentation; prosodic boundary cues; Prosody processing; kinematic boundary cues; action processing