Shigekazu Higuchi

Summary

Country: Japan

Publications

  1. ncbi request reprint Effects of VDT tasks with a bright display at night on melatonin, core temperature, heart rate, and sleepiness
    Shigekazu Higuchi
    Department of Public Health, Akita University School of Medicine, Akita 010 8543, Japan
    J Appl Physiol 94:1773-6. 2003
  2. ncbi request reprint Effects of playing a computer game using a bright display on presleep physiological variables, sleep latency, slow wave sleep and REM sleep
    Shigekazu Higuchi
    Department of Public Health, Akita University School of Medicine, Akita, Japan
    J Sleep Res 14:267-73. 2005
  3. ncbi request reprint Less exposure to daily ambient light in winter increases sensitivity of melatonin to light suppression
    Shigekazu Higuchi
    Department of Public Health, Akita University School of Medicine, Akita, Japan
    Chronobiol Int 24:31-43. 2007
  4. ncbi request reprint Influence of eye colors of Caucasians and Asians on suppression of melatonin secretion by light
    Shigekazu Higuchi
    Department of Public Health, Akita University School of Medicine, Akita, Japan
    Am J Physiol Regul Integr Comp Physiol 292:R2352-6. 2007
  5. ncbi request reprint Relationship between individual difference in melatonin suppression by light and habitual bedtime
    Shigekazu Higuchi
    Department of Public Health, Akita University School of Medicine, Akita, Japan
    J Physiol Anthropol Appl Human Sci 24:419-23. 2005
  6. doi request reprint Inter-individual difference in pupil size correlates to suppression of melatonin by exposure to light
    Shigekazu Higuchi
    Department of Psychophysiology, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan
    Neurosci Lett 440:23-6. 2008
  7. ncbi request reprint Error and individual difference in cardiovascular responses to orthostatic stress in humans
    Keita Ishibashi
    Department of Physiological Anthropology, Faculty of Design, Kyushu University, Fukuoka, Japan
    J Physiol Anthropol Appl Human Sci 24:339-43. 2005
  8. ncbi request reprint Effects of lifestyle, body composition, and physical fitness on cold tolerance in humans
    Takafumi Maeda
    Department of Hygiene and Preventive Medicine, Fukushima Medical University School of Medicine, Fukushima, Japan
    J Physiol Anthropol Appl Human Sci 24:439-43. 2005

Detail Information

Publications8

  1. ncbi request reprint Effects of VDT tasks with a bright display at night on melatonin, core temperature, heart rate, and sleepiness
    Shigekazu Higuchi
    Department of Public Health, Akita University School of Medicine, Akita 010 8543, Japan
    J Appl Physiol 94:1773-6. 2003
    ..The results suggest that performing an exciting VDT task with a BD suppresses the nocturnal changes in melatonin concentration and other physiological indicators of human biological clocks...
  2. ncbi request reprint Effects of playing a computer game using a bright display on presleep physiological variables, sleep latency, slow wave sleep and REM sleep
    Shigekazu Higuchi
    Department of Public Health, Akita University School of Medicine, Akita, Japan
    J Sleep Res 14:267-73. 2005
    ..These results suggest that playing an exciting computer game affects sleep latency and REM sleep but that a bright display does not affect sleep variables...
  3. ncbi request reprint Less exposure to daily ambient light in winter increases sensitivity of melatonin to light suppression
    Shigekazu Higuchi
    Department of Public Health, Akita University School of Medicine, Akita, Japan
    Chronobiol Int 24:31-43. 2007
    ..The results suggest that the increase in suppression of melatonin by light in winter is caused by less exposure to daily ambient light...
  4. ncbi request reprint Influence of eye colors of Caucasians and Asians on suppression of melatonin secretion by light
    Shigekazu Higuchi
    Department of Public Health, Akita University School of Medicine, Akita, Japan
    Am J Physiol Regul Integr Comp Physiol 292:R2352-6. 2007
    ..01). No significant difference was found between pupil sizes in light-eyed Caucasians and dark-eyed Asians. These results suggest that sensitivity of melatonin to light suppression is influenced by eye pigmentation and/or ethnicity...
  5. ncbi request reprint Relationship between individual difference in melatonin suppression by light and habitual bedtime
    Shigekazu Higuchi
    Department of Public Health, Akita University School of Medicine, Akita, Japan
    J Physiol Anthropol Appl Human Sci 24:419-23. 2005
    ..These results suggest that there are some people with very low sensitivity to light and that this may affect habitual bedtime...
  6. doi request reprint Inter-individual difference in pupil size correlates to suppression of melatonin by exposure to light
    Shigekazu Higuchi
    Department of Psychophysiology, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan
    Neurosci Lett 440:23-6. 2008
    ....
  7. ncbi request reprint Error and individual difference in cardiovascular responses to orthostatic stress in humans
    Keita Ishibashi
    Department of Physiological Anthropology, Faculty of Design, Kyushu University, Fukuoka, Japan
    J Physiol Anthropol Appl Human Sci 24:339-43. 2005
    ..In the perspective of physiological parameters, PC monitoring may serve as an empirical approach to evaluate physiological polymorphism...
  8. ncbi request reprint Effects of lifestyle, body composition, and physical fitness on cold tolerance in humans
    Takafumi Maeda
    Department of Hygiene and Preventive Medicine, Fukushima Medical University School of Medicine, Fukushima, Japan
    J Physiol Anthropol Appl Human Sci 24:439-43. 2005
    ..These results suggest that some lifestyle factors affect cold tolerance; in particular, daily activity might improve our ability to control heat radiation and basal heat production...