Prosopagnosia and covert recognition.

DOI 35 References
  • Koyama Yoshiko
    Ishikawa Prefectural Takamatsu Hospital Department of Neuropsychiatry, Kanazawa University School of Medicine
  • Torii Housaku
    Department of Neuropsychiatry, Kanazawa Medical University
  • Yamaguchi Nariyoshi
    Department of Neuropsychiatry, Kanazawa University School of Medicine Matsubara Hospital

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  • 相貌失認とコバート認知

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    Recently, Prosopagnosia, inability to recognize visually familiar faces, has been discussed on its heterogenuity. De Renzi (1991) and Benton (1993) classifyed prosopagnosia into apperceptive and associative forms. Covert recognition for familiar faces which had not been identified overtly was revealed in some cases of associative prosopagnosia since the first report by Bruyer et al (1983).<br>    We reported a case with prosopagnosia and cerebral achromatopsia following bilateral infarction of the posterior cerebral artery territories. Signs of covert face recognition were evidenced in the behavioral methology such as familiar-unfamiliar discrimination task, a test of occupationguess, face-name learning task and multiple forced-choice method. The patient was unable to identify famous faces overtly, but he seemed to have access covertly to semantic code of those faces, e. g. name and / or occupation.<br>    Covert recognition is a interesting phenomenon which may elucidate a mechanism of prosopagnosia.

Journal

  • Higher Brain Function Research

    Higher Brain Function Research 15 (3), 242-248, 1995

    Japanese Society of Aphasiology (Renamed as Japan Society for Higher Brain Function)

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