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NEUROLOGY 1980;30:1064
© 1980 American Academy of Neurology

Central achromatopsia

Behavioral, anatomic, and physiologic aspects

A. Damasio, M. D., T. Yamada, M. D., H. Damasio, M. D., J. Corbett, M. D. and J. McKee, M. D.

Department of Neurology, Divisions of Behavioral Neurology (Drs. A. and H. Damasio, Corbett, and Mckee) and Clinical Electrophysiology (Dr. Yamada), University of Iowa College of Medicine, Iowa City, IA.

The neuropsychologic, neuroanatomic, and neurophysiologic correlates of achromatopsia were studied in two patients. Prosopagnosia accompanied the color perception defect in the bilateral case but not in the unilateral one. No other neuropsychologic disturbance was present in either case. The lesions compromised the ventromedial sector of the occipital lobe in both cases. Cerebral evoked responses produced by pattern shift stimulation were normal for black and white but abnormal for red and green, when stimulation was given in the achromatopsic field.

Address correspondence and reprint requests to Dr. A. Damasio, Department of Neurology, University of Iowa Hospitals and Clinics, Iowa City, IA 52242.

Accepted for publication December 20, 1979




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