The research on the recognizing process of Japanese characters using magnetoencephalography

脑磁图识别日语字符过程的研究

• 批准号: 07680956
• 负责人: KOTANI Makoto
• 金额: $ 1.02万
• 依托单位: Tokyo Denki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07680956/
• 关键词: Magnetoencephalography; Kanji; t-statistical analysis; higher brain function; noninvasive technique; 超電導素子; SQUID; 脳磁図; 脳磁計; 誘発脳磁界; 生体磁気計測; 脳磁界計測; 仮名漢字問題; 時間推移; 左側頭葉

We have studied numan higher brain functions by completely noninvasive technique using Magnetoencephalography (MEG). This paper presented that we attempted to investigate tha course of the brain activities during the silent reading. First, we measured MEG during the silent reading kanjis or seeing random dot patterns. The activated areas were as follows, (1) the medial occipital cortex at around 100 ms, (2) the lateral occipital cortex at 150-180 ms, (3) the kanji's activate the left temporal cortex. Second, we measured MEG during silent reading two kanji letters. We also measured during recognizing two lines. T-statistical analysis revealed that the reading kanjis had bigger amplitude of magnetic fields than the recognizing the lines in the temporal area at 300-600 ms. The results indicate this area is important for reading the letters. The equivalent current dipoles estimated in the left temporal lobe at the time. Third, we measured MEG during understanding kana words and kanji words. T-statistical analysis revealed that kana words had bigger amplitude of magnetic fields than kanji word in the left temporal area at 300-340 ms. The results indicate that this area is important for kana word understanding.

我们利用脑磁图（MEG）对人脑高级功能进行了无创性研究。本文试图探讨在安静阅读过程中的脑活动过程。首先，我们在无声阅读汉字或看到随机点图案时测量MEG。汉字激活的脑区为：（1）100 ms左右的枕内侧皮层，（2）150-180 ms的枕外侧皮层，（3）汉字激活的左颞叶皮层。第二，我们测量MEG在沉默阅读两个汉字字母。我们还在识别两条线的过程中进行了测量。T-统计分析表明，在300-600 ms，阅读汉字时的颞区磁场幅值大于认行时的磁场幅值，说明该区域对阅读汉字有重要作用。当时左颞叶的等效电流偶极子估计。第三，我们测量MEG在理解假名词和汉字词。t统计分析显示，在300-340 ms时，假名词在左颞区的磁场幅值比汉字词大，说明该区域对假名词的理解有重要作用。

项目成果

川勝真喜,小谷誠: "仮名単語理解作業中の脳磁図" 電気学会論文誌C. 1160-C,6. 669-675 (1996)

Maki Kawakatsu、Makoto Kotani：“假名单词理解任务期间的脑磁图” 日本电气工程师学会汇刊 C. 1160-C, 6. 669-675 (1996)

小谷誠: "仮名単語理解作業中の脳磁界" 電気学会論文誌C. (掲載予定). (1996)

Makoto Kotani：“假名单词理解任务中的脑磁场”，日本电气工程师学会会刊 C.（待出版）。

小谷誠: "脳磁界計測による脳の高次機能の解明" Academia学術新報. 171. 23-34 (1997)

Makoto Kotani：“通过测量大脑磁场阐明高级大脑功能”学术通报 171. 23-34 (1997)。

内川義則,小谷 誠 他5名: "三次元脳磁界分布を用いた電流源分布推定への実験的検討" 日本応用磁気学会誌. Vol.19 No.3. 734-739 (1995)

Yoshinori Uchikawa、Makoto Kotani 等 5 人：“利用三维脑磁场分布估计电流源分布的实验研究”日本应用磁学学会杂志第 19 卷第 734-739 期（1995 年）。

T.Imada,M.Kawakatsu、M.Kotani: "Cerebral activities of the human brain in a delayed matching task-" Electroenceph.clin.Neurophsiol. suppl.47. 199-208 (1996)

T.Imada、M.Kawakatsu、M.Kotani：“延迟匹配任务中的人脑活动”Electroenceph.clin.Neurophsiol. 199-208 (1996)。