Title
Beat that Word: How Listeners Integrate Beat Gesture and Focus in Multimodal Speech Discourse.
Abstract
Communication is facilitated when listeners allocate their attention to important information focus in the message, a process called \"information structure.\" Linguistic cues like the preceding context and pitch accent help listeners to identify focused information. In multimodal communication, relevant information can be emphasized by nonverbal cues like beat gestures, which represent rhythmic nonmeaningful hand movements. Recent studies have found that linguistic and nonverbal attention cues are integrated independently in single sentences. However, it is possible that these two cues interact when information is embedded in context, because context allows listeners to predict what information is important. In an ERP study, we tested this hypothesis and asked listeners to view videos capturing a dialogue. In the critical sentence, focused and nonfocused words were accompanied by beat gestures, grooming hand movements, or no gestures. ERP results showed that focused words are processed more attentively than nonfocused words as reflected in an N1 and P300 component. Hand movements also captured attention and elicited a P300 component. Importantly, beat gesture and focus interacted in a late time window of 600-900 msec relative to target word onset, giving rise to a late positivity when nonfocused words were accompanied by beat gestures. Our results show that listeners integrate beat gesture with the focus of the message and that integration costs arise when beat gesture falls on nonfocused information. This suggests that beat gestures fulfill a unique focusing function in multimodal discourse processing and that they have to be integrated with the information structure of the message.
Year
DOI
Venue
2016
10.1162/jocn_a_00963
J. Cognitive Neuroscience
Field
DocType
Volume
Information structure,Gesture,Cognitive psychology,Psychology,Pitch accent,Nonverbal communication,Beat (music),Speech perception,Rhythm,Sentence
Journal
28
Issue
ISSN
Citations 
9
0898-929X
1
PageRank 
References 
Authors
0.35
7
5
Name
Order
Citations
PageRank
Diana Dimitrova110.35
Mingyuan Chu241.25
Lin Wang341.48
Asli Ozyurek4167.02
Peter Hagoort530466.52