The role of sensory-motor information in object recognition: evidence from category-specific visual agnosia.
The role of sensory-motor representations in object recognition was investigated in experiments involving AD, a patient with mild visual agnosia who was impaired in the recognition of visually presented living as compared to non-living entities. AD named visually presented items for which sensory-motor information was available significantly more reliably than items for which such information was not available; this was true when all items were non-living. Naming of objects from their associated sound was normal. These data suggest that both information about object form computed in the ventral visual system as well as sensory-motor information specifying the manner of manipulation contribute to object recognition.
Wolk
David A
DA
Department of Neurology, University of Pennsylvania, Hospital of the University of Pennsylvania 3400 Spruce Street Philadelphia, PA 19104, USA. dwolk@partners.org
Coslett
H Branch
HB
Glosser
Guila
G
D000161:Acoustic Stimulation; D000377:Agnosia / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009046:Motor Neurons / Q000502:physiology; D009475:Neurons, Afferent / Q000502:physiology; D009483:Neuropsychological Tests; D010364:Pattern Recognition, Visual / Q000502:physiology*; D010775:Photic Stimulation; D011932:Reading; D012660:Semantics