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  1. No Access

    Article

    Differences in psychosocial factors and sleep study findings between delayed sleep–wake phase disorder and hypersomnia in teenagers

    Central hypersomnia (HS) and delayed sleep–wake phase disorder (DSWPD) appear commonly in adolescents, and they severely reduce quality of life and have an enormous impact on academic performance and other asp...

    Yayumi Kamiyama, Yoshiyuki Kaneko, Kaori Saitoh… in Sleep and Biological Rhythms (2023)

  2. No Access

    Chapter and Conference Paper

    Asymmetrical Changes in Cerebral Blood Oxygenation Induced by an Active Standing Test in Children with Postural Tachycardia Syndrome

    Near-infrared spectroscopy enables recognition of various brain conditions based on certain factors, such as oxygenated hemoglobin (oxy-Hb). Since July 2012, we have been trying to determine the mechanisms of ...

    Yayumi Kamiyama, Yukihiko Fujita, Tatsuo Fuchigami… in Oxygen Transport to Tissue XXXVI (2014)