Reading of Japanese Kanji (morphograms) and Kana (syllabograms): a magnetoencephalographic study
Reading of Japanese Kanji (morphograms) and Kana (syllabograms): a magnetoencephalographic study
复制标题
DOI：
10.1016/s0028-3932(97)00097-3
复制
发表时间：
1998-01-01
期刊：
影响因子：
2.6
通讯作者：
Kitamura, Y
中科院分区：
文献类型：
--
作者：
Koyama, S;Kakigi, R;Kitamura, Y
记录了六名健康日本受试者的脑磁图，以研究与日语字符（汉字和假名）识别相关的皮质区域。 44 个汉字（形态图）、44 个假名（音节图）和 20 个字母被用作刺激。它们是随机呈现的，受试者被要求阅读每个刺激并数出字母的数量。使用双 37 通道 SQUID（超导量子干涉装置）梯度计记录大脑颞叶、顶叶和枕叶区域的磁响应。对汉字和假名的磁响应相似，因此汉字和假名的等效电流偶极子 (ECD) 的位置在任何记录地点都没有差异。在所有受试者中，在大约对应于布罗德曼 37 区的后下颞 (PIT) 区域中发现了 ECD，潜伏期范围为 150-300 毫秒。这些活动在两个半球都被发现，但没有一致的偏侧性。随着除一名受试者外的所有受试者的潜伏期增加，ECD 的位置在 PIT 区域从后部向前移动。只有一名受试者表现出左侧角回的活动。由于 PIT 区域的活动也以字母形式出现，因此双边 PIT 区域被认为在阅读中发挥着重要作用。 (C) 1998 年由爱思唯尔科学有限公司出版。保留所有权利。
Magnetoencephalograms were recorded from six healthy Japanese subjects in order to investigate the areas in the cortices which are involved in the recognition of Japanese characters (Kanji and Kana). Forty-four Kanji (morphograms), 44 Kana (syllabograms) and 20 alphabet letters were used as stimuli. They were presented randomly and the subjects were required to read each stimulus and count the number of letters. The magnetic responses were recorded with dual 37-channel SQUID (Superconducting Quantum Interference Device) gradiometers from the temporal, parietal and occipital areas of the brain. The magnetic responses to Kanji and Kana were similar and consequently the locations of equivalent current dipoles (ECDs) to Kanji and those to Kana did not differ at any recording site. In all the subjects, ECDs were found in the posterior-inferior temporal (PIT) areas approximately corresponding to Brodmann area 37 in the latency range of 150-300 msec. These activities were found in both hemispheres without consistent laterality. The location of the ECD moved forward from posterior to anterior in the PIT area as the latency increased in all but one subject. Only one subject showed activities in the left angular gyrus. Since activities in PIT areas were also found in alphabet letters, the bilateral PIT areas are considered to play an essential role in reading. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.