title: Apraxia of single tool Use.
abstract: We report a 72-year-old right-handed man who showed an 'apraxia of tool use' after a cerebral infarct in the territory of the left middle cerebral artery. His apraxia of tool use was characterized by a clear dissociation between the inability to use a single tool and the ability to use plural tools. Most of the errors occurred in selecting an appropriate target where a tool is expected to be applied. Detailed examinations confirmed that his conceptual knowledge of tool use was well preserved. Furthermore, when a target of a tool was provided as a cue, he used a single tool correctly. These results suggest that his inability to use a single tool originated from his inability to evoke a target image from an actual tool.
authors.affiliation: Section of Neuropsychology, Division of Disability Science, Tohoku University Graduate School of Medicine, Sendai, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Hayakawa
authors.forename: A
authors.initials: A
authors.lastname: Yamadori
authors.forename: T
authors.initials: T
authors.lastname: Fujii
authors.forename: K
authors.initials: K
authors.lastname: Suzuki
authors.forename: M
authors.initials: M
authors.lastname: Tobita
mesh_terms: D000368:Aged; D001072:Apraxias / Q000473:pathology* / Q000523:psychology*; D002544:Cerebral Infarction / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D020768:Middle Cerebral Artery / Q000473:pathology; D009483:Neuropsychological Tests