title: Preserved color imagery in an achromatopsic.
abstract: The loss of color vision secondary to central nervous system disease (achromatopsia) is thought to preclude visual imagery of colors. We report a patient with achromatopsia, secondary to bilateral temporo-occipital infarcts inclusive of the lingual and fusiform gyri, with preserved color imagery. Our findings, in conjunction with previous cases in the literature, are consistent with a single neural network for color processing in which a disconnection of internal activation from stored color representations produces impaired color imagery with preserved color perception, whereas a disconnection of visual input to these representations produces achromatopsia with preserved color imagery.
authors: Department of Neurology, University of Cincinnati College of Medicine, OH 45267-0525, USA.
authors: J E
authors: JE
authors: Shuren
authors: T G
authors: TG
authors: Brott
authors: B K
authors: BK
authors: Schefft
authors: W
authors: W
authors: Houston
mesh_terms: D002544:Cerebral Infarction / Q000150:complications / Q000473:pathology; D003118:Color Perception / Q000502:physiology*; D003119:Color Perception Tests; D003117:Color Vision Defects / Q000209:etiology / Q000473:pathology / Q000523:psychology*; D006801:Humans; D007092:Imagination / Q000502:physiology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests