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Amnesia following Left Medial Frontal Subcortical Hemorrhage : A Case Report Osamu Iizuka 1 , Kyoko Suzuki 1 , Toshikatsu Fujii 1 , Etsuro Mori 1 , Atsushi Yamadori 2 1Devision of Behavioral Neurology and Cognitive Neuroscience, Department of Functional Medical Science, Tohoku University Graduate School of Medicine 2Division of Psychology Section of Medical Psychology, Department of Humanities and Sciences, Kobe Gakuin University Keyword: frontal lobe , amnesia , anterior cingulate gyrus , Papez's circuite pp.227-231
Published Date 2005/3/1
DOI https://doi.org/10.11477/mf.1406100028
  • Abstract
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There has been a controversy as to the contribution of the frontal lobe to human memory function. We describe a 49-year-old right-handed patient with memory disturbance following a left medial frontal subcortical hematoma. Her amnesia was characterized by 1)predominant anterograde amnesia, 2)difficulty in both voluntary recall and recognition tasks, 3)a great number of false-alarm responses in a recognition task, and 4)no confabulation. An MRI demonstrated that her lesion was restricted to the left medial frontal area and anterior cingulate gyrus. This case represents a rare instance of amnesia following damage to the frontal lobe. We speculated that the unique feature of her memory impairment resulted from combined lesions in the medial frontal subcortical white matter and anterior cingulate gyrus. It seems that Papez's circuite participated in the development of these symptoms.

(Received : November 15, 2004)


Copyright © 2005, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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