日本語AIでPubMedを検索
左後中側頭回皮質下出血による漢字失語症の選択的な音読機能障害
Selective impairment of On-reading (Chinese-style pronunciation) in alexia with agraphia for kanji due to subcortical hemorrhage in the left posterior middle temporal gyrus.
PMID: 32672088 DOI: 10.1080/13554794.2020.1788608.
抄録
左後中側頭回出血後に漢字の失語症を呈した患者を報告した。漢字一字読み、漢字二字読み、十字読み単語テストの結果、漢字は読みながら読めないが、読みながら読めることが判明した。この読解力低下は、後下側頭葉(正字語彙)と後上側頭回(音韻語彙)の断絶によるものと考えられ、正字から音韻への経路を意味的経路で迂回することで、保存読解や塾訓読解が実現されたと考えられる。
We report a patient with alexia with agraphia for kanji after hemorrhage in the left posterior middle temporal gyrus. The results of single-character kanji reading and two-character - (Chinese-style pronunciation), - (native Japanese pronunciation), and Jukujikun (irregular ) reading word tests revealed that the patient could not read kanji characters with -reading but read the characters with -reading. We consider that this -reading alexia was caused by disconnection between the posterior inferior temporal cortex (orthographic lexicon) and the posterior superior temporal gyrus (phonological lexicon), and preserved - and Jukujikun-reading was realized by bypassing the orthography-to-phonology route by the semantic route.