The Japanese journal of neuropsychology

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ArticleTitle	Lines opposite to the intention in right-hand writing in a patient with right medial occipital and posterior callosal lesions
Language	J
AuthorList	Shiori Maruyama¹⁾, Maiko Suzuki²⁾, Yuko Takahashi²⁾, Fumio Naganuma³⁾, Toru Imamura¹⁾
Affiliation	¹⁾Department of Speech Therapy, School of Health Sciences, Niigata University of Health and Welfare ²⁾Department of Rehabilitation, Tsurugaya Hospital ³⁾Department of Cardiovascular Medicine, Tsurugaya Hospital
Publication	Japanese Journal of Neuropsychology: 29 (3), 192-202, 2013
Received	Mar 16, 2010
Accepted	Feb 22, 2013
Abstract	An 82-year-old right-handed woman developed a right medial occipital and posterior callosal infarction. She showed right hemisphere syndromes (left unilateral spatial neglect, disturbance of attention, constructional disorder, prosopagnosia and positive visual phenomena including visual hallucination and metamorphopsia), callosal disconnection syndromes (disturbance of crossed point localization, left tactile anomia and diagonistic apraxia) and mild Bálint syndrome. Although she showed neither aphasia nor alexia, severe writing disturbance was observed in the dictation and the copy of both kanji and kana letters. The characteristics of the errors in the writing indicated the presence of spatial agraphia, pure agraphia and constructional agraphia. Furthermore, we often observed lines opposite to the intention in her right-hand writing. She often complained that her right hand moved opposite to the intention in writing. These phenomena could not be explained either by the three types of agraphia mentioned above, or by diagonistic apraxia or compulsive manipulation of tools. On the other hand, some, but not all, aspects of the phenomenon consistent to the conflict of intentions caused by callosal damage.
Keywords	conflict of intentions, callosal disconnection syndrome, diagonistic apraxia, pure agraphia, constructional agraphia