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  • Peeters, D., Snijders, T. M., Hagoort, P., & Ozyurek, A. (2015). The role of left inferior frontal Gyrus in the integration of point- ing gestures and speech. In G. Ferré, & M. Tutton (Eds.), Proceedings of the4th GESPIN - Gesture & Speech in Interaction Conference. Nantes: Université de Nantes.

    Abstract

    Comprehension of pointing gestures is fundamental to human communication. However, the neural mechanisms that subserve the integration of pointing gestures and speech in visual contexts in comprehension are unclear. Here we present the results of an fMRI study in which participants watched images of an actor pointing at an object while they listened to her referential speech. The use of a mismatch paradigm revealed that the semantic unication of pointing gesture and speech in a triadic context recruits left inferior frontal gyrus. Complementing previous ndings, this suggests that left inferior frontal gyrus semantically integrates information across modalities and semiotic domains.
  • Schubotz, L., Holler, J., & Ozyurek, A. (2015). Age-related differences in multi-modal audience design: Young, but not old speakers, adapt speech and gestures to their addressee's knowledge. In G. Ferré, & M. Tutton (Eds.), Proceedings of the 4th GESPIN - Gesture & Speech in Interaction Conference (pp. 211-216). Nantes: Université of Nantes.

    Abstract

    Speakers can adapt their speech and co-speech gestures for addressees. Here, we investigate whether this ability is modulated by age. Younger and older adults participated in a comic narration task in which one participant (the speaker) narrated six short comic stories to another participant (the addressee). One half of each story was known to both participants, the other half only to the speaker. Younger but not older speakers used more words and gestures when narrating novel story content as opposed to known content. We discuss cognitive and pragmatic explanations of these findings and relate them to theories of gesture production.
  • Slonimska, A., Ozyurek, A., & Campisi, E. (2015). Ostensive signals: markers of communicative relevance of gesture during demonstration to adults and children. In G. Ferré, & M. Tutton (Eds.), Proceedings of the 4th GESPIN - Gesture & Speech in Interaction Conference (pp. 217-222). Nantes: Universite of Nantes.

    Abstract

    Speakers adapt their speech and gestures in various ways for their audience. We investigated further whether they use ostensive signals (eye gaze, ostensive speech (e.g. like this, this) or a combination of both) in relation to their gestures when talking to different addressees, i.e., to another adult or a child in a multimodal demonstration task. While adults used more eye gaze towards their gestures with other adults than with children, they were more likely to use combined ostensive signals for children than for adults. Thus speakers mark the communicative relevance of their gestures with different types of ostensive signals and by taking different types of addressees into account.
  • Holler, J., Kelly, S., Hagoort, P., & Ozyurek, A. (2012). When gestures catch the eye: The influence of gaze direction on co-speech gesture comprehension in triadic communication. In N. Miyake, D. Peebles, & R. P. Cooper (Eds.), Proceedings of the 34th Annual Meeting of the Cognitive Science Society (CogSci 2012) (pp. 467-472). Austin, TX: Cognitive Society. Retrieved from http://mindmodeling.org/cogsci2012/papers/0092/index.html.

    Abstract

    Co-speech gestures are an integral part of human face-to-face communication, but little is known about how pragmatic factors influence our comprehension of those gestures. The present study investigates how different types of recipients process iconic gestures in a triadic communicative situation. Participants (N = 32) took on the role of one of two recipients in a triad and were presented with 160 video clips of an actor speaking, or speaking and gesturing. Crucially, the actor’s eye gaze was manipulated in that she alternated her gaze between the two recipients. Participants thus perceived some messages in the role of addressed recipient and some in the role of unaddressed recipient. In these roles, participants were asked to make judgements concerning the speaker’s messages. Their reaction times showed that unaddressed recipients did comprehend speaker’s gestures differently to addressees. The findings are discussed with respect to automatic and controlled processes involved in gesture comprehension.
  • Sumer, B., Zwitserlood, I., Perniss, P. M., & Ozyurek, A. (2012). Development of locative expressions by Turkish deaf and hearing children: Are there modality effects? In A. K. Biller, E. Y. Chung, & A. E. Kimball (Eds.), Proceedings of the 36th Annual Boston University Conference on Language Development (BUCLD 36) (pp. 568-580). Boston: Cascadilla Press.

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