Visuospatial deficits due to impaired visual attention: investigation of two cases of slowly progressive visuospatial impairment.

Two patients with slowly progressive visuospatial impairment demonstrated a peculiar type of visuoconstructive deficit. The most prominent manifestation appeared when handling kanji (logogram) characters and other figurative patterns. The patients showed pure agraphia for complex kanji but not for kana (syllabogram) or Arabic numerals.