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Neural mechanisms underlying chronic fatigue

  • Masaaki Tanaka

    Masaaki Tanaka is an Assistant Professor, Department of Physiology, Osaka City Graduate School of Medicine, Osaka Japan. He is also a medical doctor. In 2003, he took a medical doctorate (PhD) at Osaka City University Graduate School of Medicine. His specialty is fatigue science and functional neuroimaging.

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    , Akira Ishii

    Akira Ishii is an Assistant Professor, Department of Physiology, Osaka City Graduate School of Medicine, Osaka Japan. He is also a medical doctor. In 2010, he took a medical doctorate (PhD) at Osaka City University Graduate School of Medicine. His specialty is fatigue science and functional neuroimaging.

    und Yasuyoshi Watanabe

    Yasuyoshi Watanabe is a Director, Center for Life Science Technologies, RIKEN and a Professor, Department of Physiology, Osaka City Graduate School of Medicine. He is also a medical doctor. In 1981, he took a medical doctorate (PhD) at Kyoto University. His specialty is Fatigue science and molecular neuroimaging.

Veröffentlicht/Copyright: 11. Oktober 2013
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Abstract

Fatigue is defined as a condition or phenomenon of declined ability and efficiency of mental and/or physical activities, caused by excessive mental or physical activities, diseases, or syndromes. Acute fatigue is a normal condition that disappears after a period of rest; in contrast, chronic fatigue does not disappear after an ordinary rest. Chronic fatigue impairs daily activities and contributes to various medical conditions and death. In addition, many people complain of chronic fatigue. It would thus be of great value to clarify the mechanisms underlying chronic fatigue and to develop efficient treatment methods to overcome it. Here, we review data primarily from behavioral, neurophysiological, and neuroimaging experiments related to the neural mechanisms underlying chronic fatigue. We propose that repetitive and prolonged overwork and/or stress cause neural damage of a facilitation system, as well as central sensitization and classical conditioning of an inhibition system. We also propose a new treatment strategy for chronic fatigue on the basis of its underlying neural mechanisms.


Corresponding author: Masaaki Tanaka, Department of Physiology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan, e-mail:

About the authors

Masaaki Tanaka

Masaaki Tanaka is an Assistant Professor, Department of Physiology, Osaka City Graduate School of Medicine, Osaka Japan. He is also a medical doctor. In 2003, he took a medical doctorate (PhD) at Osaka City University Graduate School of Medicine. His specialty is fatigue science and functional neuroimaging.

Akira Ishii

Akira Ishii is an Assistant Professor, Department of Physiology, Osaka City Graduate School of Medicine, Osaka Japan. He is also a medical doctor. In 2010, he took a medical doctorate (PhD) at Osaka City University Graduate School of Medicine. His specialty is fatigue science and functional neuroimaging.

Yasuyoshi Watanabe

Yasuyoshi Watanabe is a Director, Center for Life Science Technologies, RIKEN and a Professor, Department of Physiology, Osaka City Graduate School of Medicine. He is also a medical doctor. In 1981, he took a medical doctorate (PhD) at Kyoto University. His specialty is Fatigue science and molecular neuroimaging.

We thank Forte Science Communication for editorial assistance with the manuscript. This work was supported in part by the Grant-in-Aid for Scientific Research B (KAKENHI: 23300241) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan and the Health Labour Sciences Research Grant of Japan.

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Received: 2013-8-22
Accepted: 2013-9-5
Published Online: 2013-10-11
Published in Print: 2013-12-01

©2013 by Walter de Gruyter Berlin Boston

Heruntergeladen am 19.11.2025 von https://www.degruyterbrill.com/document/doi/10.1515/revneuro-2013-0035/pdf
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