Contextual Cognitive Analysis for Japanese Sign Language by Brain-based Information and Communications Technologies

语义偏离词的N400比无意义操作的N400高，但存在个体差异。其次，考察了手语和阅读过程中的语义分析过程。结果表明，在语义不一致的情况下，手势和阅读的N400都增加了，手势的按钮反应时比阅读的反应时增加。因此，考虑了语言的情态的效果。此外，用Focus法对听力正常人和耳聋人的字母加工的大脑活动进行了评价，并观察了听觉和听觉两种语言在字母加工中的差异。考察了聋人语义分析机制的分析过程，并对一些定性事实进行了验证。

N400 in semantic deviation word of JSL was increased in comparison with the meaningless operation, though the individual difference existed. Next, semantic analysis process during the signing and on the reading were examined. As the result, N400 increased in both of the signing and the reading in the semantic incongruity, and the button reaction time in the signing increased in comparison with the reading. Thus, the effect of the modality of the language was considered. In addition, on a hearing and a deaf, cerebrum activity of the processing of letter was estimated by Focus, and the difference between the semantic process was observed. The analysis procedure of semantic analysis mechanism of the deaf was examined, and some qualitative fact was confirmed.