title: When concepts lose their color: a case of object-color knowledge impairment.
abstract: Color is important in our daily interactions with objects, and plays a role in both low- and high-level visual processing. Previous neuropsychological studies have shown that color perception and object-color knowledge can doubly dissociate, and that both can dissociate from processing of object form. We present a case study of an individual who displayed an impairment for knowledge of the typical colors of objects, with preserved color perception and color naming. Our case also presented with a pattern of, if anything, worse performance for naming living items compared to non-living things. The findings of the experimental investigation are evaluated in light of two theories of conceptual organization in the brain: the Sensory/Functional Theory and the Domain-Specific Hypothesis. The dissociations observed in this case compel a model in which sensory/motor modality and semantic domain jointly constrain the organization of object knowledge.
authors: Department of Brain & Cognitive Sciences, University of Rochester, USA.
authors: Alena
authors: A
authors: Stasenko
authors: Department of Brain & Cognitive Sciences, University of Rochester, USA; Center for Visual Science, University of Rochester, USA.
authors: Frank E
authors: FE
authors: Garcea
authors: Department of Neurology, Unity Hospital, Rochester, USA.
authors: Mary
authors: M
authors: Dombovy
authors: Department of Brain & Cognitive Sciences, University of Rochester, USA; Department of Neurosurgery, University of Rochester Medical Center, USA; Center for Visual Science, University of Rochester, USA. Electronic address: mahon@rcbi.rochester.edu.
authors: Bradford Z
authors: BZ
authors: Mahon
mesh_terms: D003072:Cognition Disorders / Q000175:diagnosis* / Q000209:etiology / Q000523:psychology; D003118:Color Perception / Q000502:physiology*; D003210:Concept Formation / Q000502:physiology*; D006801:Humans; D020300:Intracranial Hemorrhages / Q000150:complications* / Q000523:psychology; D019359:Knowledge; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests
keywords: Conceptual knowledge; Domain-specific; Modality-specific; Object-color knowledge; Semantic memory