The left superior longitudinal fasciculus within the primary sensory area of inferior parietal lobe plays a role in dysgraphia of kana omission within sentences.
Functional neurological changes after surgery combined with diffusion tensor imaging (DTI) tractography can directly provide evidence of anatomical localization of brain function. Using these techniques, a patient with dysgraphia before surgery was analyzed at our hospital in 2011. The patient showed omission of kana within sentences before surgery, which improved after surgery. The brain tumor was relatively small and was located within the primary sensory area (S1) of the inferior parietal lobe (IPL). DTI tractography before surgery revealed compression of the branch of the superior longitudinal fasciculus (SLF) by the brain tumor. These results suggest that the left SLF within the S1 of IPL plays a role in the development of dysgraphia of kana omission within sentences.
Department of Neurosurgery, Komagome Metropolitan Hospital, Bunkyo-ku, Tokyo, Japan. shinoura@cick.jp
Nobusada
N
Shinoura
Akira
A
Midorikawa
Toshiyuki
T
Onodera
Ryozi
R
Yamada
Yusuke
Y
Tabei
Yasumitsu
Y
Onda
Chihiro
C
Itoi
Seiko
S
Saito
Kazuo
K
Yagi
D000368:Aged; D000381:Agraphia / Q000473:pathology* / Q000523:psychology*; D044466:Asian People; D001932:Brain Neoplasms / Q000473:pathology / Q000523:psychology / Q000601:surgery; D056324:Diffusion Tensor Imaging; D006801:Humans; D007807:Language Tests; D008297:Male; D009415:Nerve Net / Q000473:pathology; D009483:Neuropsychological Tests; D010296:Parietal Lobe / Q000473:pathology*; D014705:Verbal Behavior