Visual form agnosia of line drawings and alexia and agraphia of Kanji after right fusiform gyrus and occipitotemporal lobe infarction

A 69-year-old Japanese man presented with prosopagnosia, visual form agnosia for line drawings of objects, as well as alexia and agraphia for Kanji after infarction in the right fusiform gyrus and occipitotemporal lobe. In contrast, the verbalization of real objects and line drawings of actions was good. Visual recognition disorders that affect the identification of faces, line drawings, and Kanji suggest impaired processing related to multielement integration. Real objects and line drawings of actions, which are easy to process as visual units and tend to evoke kinesthetic images, were less affected after damage in the right occipital-inferior temporal pathway, suggesting that cognitive processing is possible via the dorsal pathway.