Agentive versus non-agentive motions immediately influence event apprehension and description: an eye-tracking study in a VOS language
JOURNAL OF EAST ASIAN LINGUISTICS
Authors: Sato, Manami; Niikuni, Keiyu; Schafer, Amy J.; Koizumi, Masatoshi
Abstract
The embodied cognition hypothesis postulates that human cognition is fundamentally grounded in our experience of interacting with the physical world (Barsalou in Behav Brain Sci 22:577-609, 1999). Research has shown bi-directional associations between physical action and the processes of understanding language: language comprehension seems to activate implied visual and motor components (Zwaan and Taylor in J Exp Psychol Gen 135(1):1-11, 2006), and action behavior seems to facilitate the comprehension of associated action-language (Beilock et al. in Proc Natl Acad Sci USA 105:13269-13273, 2008). Although numerous research studies have reported a link between action and language comprehension, the exact nature of their association remains subject to debate (Chatterjee in Lang Cognit 2:79-116, 2010). Moreover, the role of action in the production of language is under-explored, as are general language production processes in Austronesian languages. The endangered Austronesian language Truku provides typological patterns that are both under-examined in psycholinguistic research and informative for questions of language production. Truku allows flexibility in the relative location of verbs versus arguments in sentence production, and uses a symmetrical voice system that marks the prominence of different participants in an event. Working with native speakers of Truku, we tested whether performing physical motions immediately affects the conceptual saliency of the components represented in a to-be-described event in ways that guide speakers' visual attention and shape their utterance formulation. More specifically, we investigated whether speakers' engagement as an agent or patient in a non-speech physical action affects initial eye-fixations on agent versus patient participants in a visual scene, as well as word order and grammatical voice choices in the speakers' descriptions of simple transitive events. The results revealed significant effects of physical action on the relative location and prominence of agents in subsequent sentence formulation, and on online patterns of eye fixations. These results provide further support for language-action connections in cognitive processing, and shed light on the cross-linguistic patterns of sentence production.
Laser-based CO concentration and temperature measurements in high-pressure shock-tube studies ofn-heptane partial oxidation
APPLIED PHYSICS B-LASERS AND OPTICS
Authors: He, Dong; Nativel, Damien; Herzler, Juergen; Jeffries, Jay B.; Fikri, Mustapha; Schulz, Christof
Abstract
This paper presents a laser-based absorption technique for measuring temperature and CO concentration in high-pressure shock tubes. Two fundamental vibrations of CO (v" = 0, P8, 4.73 mu m andv" = 1, R21, 4.56 mu m) were selected for high-temperature sensitivity with a reduced influence from pressure broadening compared to previous work. Single-pass absorption (80 mm path length) was measured with two quantum-cascade lasers. The technique was demonstrated by measuring time-resolved temperature for non-reactive mixtures at 1100-1960 K and 1.2-9.7 bar. During partial oxidation ofn-heptane, temperature and CO concentrations were measured with 4 mu s time resolution at 1360-1670 K and 5.8-8.2 bar. Interference from broadband CO(2)absorption was quantified and subtracted. Measured data in the burnout state are in excellent agreement with predictions from kinetics mechanisms (Mehl et al. Proc Combust Inst 33:193, 2011; Zhang et al. Combust Flame 172:116, 2016) over the entire range of operating conditions, which validates the performance of the current laser-absorption technique in reactive-mixture measurements. Additionally, time-resolved temperature and CO-concentration measurements agree well with predictions based on the Mehl et al. mechanism.