TL;DR: The Japanese language has two different systems of writing: Kanji or morphograms and Kana or syllabograms (Fig. 1). Recent neuropsychological studies on patients with transection of the corpus callosum or with a focal lesion in the left cerebral hemisphere have revealed that the right cerebral hemisphere is responsible for reading and writing of both types of scripts.
TL;DR: The case of the right-handed young Japanese woman with alexia with agraphia of kanji (the Japanese morphograms) due to a small circumscribed haematoma in the left posterior inferior temporal gyrus suggests that the processing of kanjin and kana involves different intrahemispheric mechanisms.
Abstract: The case of the right-handed young Japanese woman with alexia with agraphia of kanji (the Japanese morphograms) due to a small circumscribed haematoma in the left posterior inferior temporal gyrus is described. Her chief complaint was the inability to read and write kanji. Detailed examination showed that her alexia with agraphia was much more predominant for kanji than kana (the Japanese syllabograms). These facts suggest that the processing of kanji and kana involves different intrahemispheric mechanisms.
TL;DR: Six healthy Japanese subjects were investigated in order to investigate the areas in the cortices which are involved in the recognition of Japanese characters (Kanji and Kana) and the locations of equivalent current dipoles (ECDs) did not differ at any recording site.
TL;DR: In this paper, the authors used positron emission tomography (PET) measurements of regional cerebral blood flow (rCBF) for mapping the functional anatomy during reading of Kana and Kanji and found a significant activation of both left, 3.2% and right, 6.5% of the left supramarginal/angular gyri region during Kana reading compared with Kanji reading.
TL;DR: It is concluded that patterns of brain activation changed as the memory of the 20 K-words became fixed through daily practice and that reading of both Korean words and Japanese syllabograms engaged the left angular gyrus.