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Ma, Jiyoung Kim, Myeongju Kim, Jungyoon Hong, Gahae Namgung, Eun Park, Shinwon Lim, Soo Mee Lyoo, In Kyoon Yoon, Sujung
Published in
Sleep medicine
Bright light (BL) exposure is a safe non-pharmacological intervention for sleep disturbances. However, the functional brain correlates underlying the effects of bright light exposure need to be further clarified. As alterations in the salience network were reported in individuals with sleep disturbances, we have investigated whether bright light ex...
Yoshiike, Takuya Honma, Motoyasu Yamada, Naoto Kim, Yoshiharu Kuriyama, Kenichi
Published in
Physiology & behavior
Bright light (BL) not only regulates human emotion and circadian physiology but can also directly modulate emotional memories. Impaired fear extinction and enhanced fear acquisition and consolidation are hallmarks of fear-circuitry disorders; thus, we tested whether BL facilitates fear extinction and inhibits fear acquisition. We randomly exposed 2...
Nagashima, Shunsuke Yamashita, Makoto Tojo, Chiaki Kondo, Masayuki Morita, Takeshi Wakamura, Tomoko
[Background]Tryptophan (TRP) is an essential amino acid, and it has been suggested that TRP intake at breakfast combined with daytime bright light exposure can increase nocturnal melatonin secretion. However, the mechanisms involved are not yet clear. The aim of this study was to examine the effect of TRP supplement intake at breakfast on nocturnal...
Nagashima, Shunsuke Yamashita, Makoto Tojo, Chiaki Kondo, Masayuki Morita, Takeshi Wakamura, Tomoko
Published in
Journal of Physiological Anthropology
BackgroundTryptophan (TRP) is an essential amino acid, and it has been suggested that TRP intake at breakfast combined with daytime bright light exposure can increase nocturnal melatonin secretion. However, the mechanisms involved are not yet clear. The aim of this study was to examine the effect of TRP supplement intake at breakfast on nocturnal m...
Fukushige, Haruna Fukuda, Yumi Tanaka, Mizuho Inami, Kaoru Wada, Kai Tsumura, Yuki Kondo, Masayuki Harada, Tetsuo Wakamura, Tomoko Morita, Takeshi
...
Published in
Journal of Physiological Anthropology
BackgroundThe purpose of the present study is to investigate effects of tryptophan intake and light exposure on melatonin secretion and sleep by modifying tryptophan ingestion at breakfast and light exposure during the daytime, and measuring sleep quality (by using actigraphy and the OSA sleep inventory) and melatonin secretion at night.MethodsThir...
