Mirror Visual Feedback (MVF) with a mirror box and Virtual Reality based MVF (VR-MVF) are known as one of several therapies within a rehabilitation for improve- ment of motor function after stroke and pain control. Our paper focuses on cognitive functions of temporal consistency between prediction with motor imagery and visual in- formation related to motor movements in using MVF and VR-MVF because of common features of the both MVFs. Healthy participants tried completing an experimental task to synchronize prediction of visual change of motor movements with motor imagery and visual information about motor movements in a virtual environment resembling VR- MVF. In the experimental tasks, visual information was provided in two conditions which are temporal delayed and not delayed. We evaluated that success and failure of twelve trials in experimental tasks, cortical activations measured with functional Mag- netic Resonance Imaging (fMRI) and subjective experience collected by questionnaire during performing the experimental tasks. The participants could complete the consis- tency prediction of visual change and visual information in motor movements on the virtual environment. We found that prediction error is perceived when the prediction of visual change in motor movement is not consistent with visual information about mo- tor movement, and there are interindividual variability in the task completion related to the consistency. This suggests temporal consistency between prediction with motor imagery and visual information related to motor movement may be able to contribute motor learning on VR-MVF.
In skill acquisition for periodic body movements such as cascade juggling, establish- ment of stable body movements seems crucial. However, we have a further question: do all jugglers acquire such common skills through standard developmental processes? Consequently, we mainly investigated development of three types of stabilities: the stability of chest movement representing torso movement, the stability of wrist move- ment representing arm swing, and the stability of time interval representing swinging rhythm. In addition, we also investigated participants’verbal reports on their inten- tional concerns for achieving optimum learning during practice. In the experiment, novices practiced three-ball cascade juggling over a period of one week. The findings revealed that two of the five intermediate level jugglers who performed over 100 suc- cessive catches established individually unique body movements. Results also revealed the possibility that such specific body movements related to their intentional focuses during practice.
This study constituted action research that nurses and researchers tried to change a training system for novice nurses by building a community of dialogue that went beyond existing frameworks. First, we interviewed the administrator, clinical educa- tor, and preceptor who were concerned with newcomer education and the design of the training system, and we analyzed the differences or gaps among their perspectives. Second, we planned and tried a cross-boundary method whereby the nurses exchanged knowledge and created a new training system for newcomers, negotiating the bound- aries among wards or between researchers and hospital staff. The micro-process of creating new knowledge through dialogue was examined using discourse analysis and activity theory. The results were as follows: new knowledge was generated; and the training system became multilateral. This was achieved through a process of continu- ous context transformation: from past-oriented interviews to a context on the border between past-oriented and future-oriented activity, then to a context of making con- tradictions visible, and so on. In this process, a ‘nonsense proposal’by the researcher (facilitator), one that nurses had laughed at and denied, also emerged as a springboard for new, important knowledge. The discussion also describes what was created, and its associated or conflicted heterogeneous historicity. This is discussed from the viewpoint of concepts of zone of time perspectives (ZTP) and inter-historicity.
Human behavior under risky or dangerous situations is considered somewhat irra- tional from the viewpoint of objective risks. Recent studies have shown that it is innate in nature and had been acquired in the process of evolution. This means that such behavior is adaptive and must have some kind of efficiency or advantage in natural selection. This paper constructs a simulation model of the human evolution process and tries to acquire risk related behavior of Agents. Agents, which simulate life histories of humans, have shown risk accepting behavior over a large parameter space that specifies the environmental condition in which the evolution takes place. The relation between behavior under risky situations and life histories of organisms is also discussed.
Previous experimental studies suggest that bilinguals’lexical access is language non selective, and that L1 word frequency plays a role in L2 word recognition. The current eye-tracking study investigated L1 frequency effects of lexical syntactic information during reading. Chinese-Japanese bilinguals read L2-Japanese sentences containing two types of cognate verbal nouns. Though these words were cognates, they differed in the frequency with which they appeared as passives between Japanese and Chinese. Stimuli items were all displayed in Japanese in either their active or passive voice form for both the experimental (low frequency of L1-Chinese passive usage, e.g., 指示‘in- struct’) and control (high frequency of L1-Chinese passive usage, e.g., 逮捕‘arrest’) conditions. The frequencies in L2-Japanese were controlled to be equal for all items. The results demonstrated that cognates with low frequency of L1-Chinese passive usage induced longer L2-Japanese reading times during early and late stages of processing in comparison to all other conditions. These cognates also displayed lower accuracy than their active voice counterparts. In conclusion, this study revealed that besides the over- all word frequency, the L1 frequency of syntactic information has substantial influence on the processing of the target L2 language.
Human judgment and decision making is influenced by artifacts as well as other people. Human-robot communication in real life has been attracting attention and robots have begun to be utilized as a human interlocutor in recent years. For instance, Watanabe et al. (2015) reported that an android as a salesperson could influence human preferences through a touch display conversation. In order to apply robots as inter- locutors for human decision making, we need to understand how people are influenced during interactions with robots. Thus, we investigated how semi-forced choices through a touch display conversation with an android and human interlocutor influenced human preferences based on cognitive dissonance theory. The results indicated that people are more willing to accept a semi-forced choice with an android as an interlocutor rather than with a human interlocutor.
April 03, 2017 There had been a system trouble from April 1, 2017, 13:24 to April 2, 2017, 16:07(JST) (April 1, 2017, 04:24 to April 2, 2017, 07:07(UTC)) .The service has been back to normal.We apologize for any inconvenience this may cause you.
May 18, 2016 We have released “J-STAGE BETA site”.
May 01, 2015 Please note the "spoofing mail" that pretends to be J-STAGE.