World's Best Scientists 2026 revealed!

D-Index & Metrics

Neuroscience

D-Index
57
Citations
13255
World Ranking
4318
National Ranking
127

Overview

Masako Okawa is affiliated with Shiga University of Medical Science in Japan. Their research focuses primarily on sleep and related disorders, with significant contributions in the fields of neuroscience, psychology, and social sciences. The subfields that characterize their work include experimental and cognitive psychology, cognitive neuroscience, education, endocrine and autonomic systems, and sociology and political science.

The main topics covered in Masako Okawa's research are:

  • Sleep and related disorders
  • Sleep and wakefulness research
  • Youth substance use and school attendance
  • Circadian rhythm and melatonin
  • Impact of technology on adolescents
  • Child development and digital technology
  • Gender and technology in education

Among their recent papers are the following:

  • "Effects of Cognitive Behavioral Therapy for Insomnia on Subjective-Objective Sleep Discrepancy in Patients with Primary Insomnia: a Small-Scale Cohort Pilot Study," 2021, International Journal of Behavioral Medicine
  • "A rare genetic variant in the cleavage site of prepro-orexin is associated with idiopathic hypersomnia," 2022, npj Genomic Medicine
  • "Genome-wide association study of idiopathic hypersomnia in a Japanese population," 2021, Sleep and Biological Rhythms
  • "Prevalence and associated factors of circadian rhythm sleep-wake disorders and insomnia among visually impaired Japanese individuals," 2021, BMC Public Health
  • "Sleep-health care and education are urgently needed for excessive screen time and sleep problems among school-age children," 2022, Sleep and Biological Rhythms

The frequent venues for Masako Okawa's publications include:

  • International Journal of Behavioral Medicine
  • Sleep and Biological Rhythms
  • npj Genomic Medicine
  • BMC Public Health

Collaborators commonly working with Masako Okawa include Naoto Yamada, Yuichi Inoue, Kohei Nishikawa, Kenichi Kuriyama, and Takuya Yoshiike. These coauthors have contributed to multiple studies, reflecting collaborative research efforts in their shared fields.

Masako Okawa's work spans comprehensive investigations into cognitive and biological aspects of sleep disorders, exploring both genetic underpinnings and behavioral interventions. Their research also addresses the impact of technology on adolescent sleep patterns and the need for sleep-health education among young populations.

Best Publications

  • Psychometric assessment of subjective sleep quality using the Japanese version of the Pittsburgh Sleep Quality Index (PSQI-J) in psychiatric disordered and control subjects

    Yuriko Doi;Masumi Minowa;Makoto Uchiyama;Masako Okawa

  • A schizophrenia-associated mutation of DISC1 perturbs cerebral cortex development.

    Atsushi Kamiya;Atsushi Kamiya;Ken Ichiro Kubo;Toshifumi Tomoda;Toshifumi Tomoda;Manabu Takaki

  • Association of structural polymorphisms in the human period3 gene with delayed sleep phase syndrome

    Takashi Ebisawa;Makoto Uchiyama;Naofumi Kajimura;Kazuo Mishima

  • Disrupted-in-Schizophrenia-1 (DISC-1): Mutant truncation prevents binding to NudE-like (NUDEL) and inhibits neurite outgrowth

    Yuji Ozeki;Toshifumi Tomoda;John Kleiderlein;Atsushi Kamiya

  • Morning bright light therapy for sleep and behavior disorders in elderly patients with dementia

    K. Mishima;M. Okawa;Y. Hishikawa;S. Hozumi

  • Incidental Lewy body disease in a patient with REM sleep behavior disorder

    M. Uchiyama;K. Isse;K. Tanaka;N. Yokota

  • Sleep loss and daytime sleepiness in the general adult population of Japan.

    Xianchen Liu;Makoto Uchiyama;Keiko Kim;Masako Okawa

  • Diminished melatonin secretion in the elderly caused by insufficient environmental illumination.

    K. Mishima;M. Okawa;T. Shimizu;Y. Hishikawa

  • Prevalence of sleep disturbance and hypnotic medication use in relation to sociodemographic factors in the general Japanese adult population.

    Yuriko Doi;Masumi Minowa;Masako Okawa;Makoto Uchiyama

  • Melatonin secretion rhythm disorders in patients with senile dementia of Alzheimer’s type with disturbed sleep–waking

    Kazuo Mishima;Tozawa Tozawa;Kohtoku Satoh;Yasuhiro Matsumoto

  • Prevalence and correlates of self-reported sleep problems among Chinese adolescents

    Xianchen Liu;Makoto Uchiyama;Masako Okawa;Hiroshi Kurita

  • Circadian rhythm disorders in sleep-waking and body temperature in elderly patients with dementia and their treatment.

    M Okawa;K Mishima;Y Hishikawa;S Hozumi

  • Activity of Midbrain Reticular Formation and Neocortex during the Progression of Human Non-Rapid Eye Movement Sleep

    Naofumi Kajimura;Makoto Uchiyama;Yutaka Takayama;Sunao Uchida

  • Sleep and mood disorders

    Ruth M. Benca;Masako Okawa;Makoto Uchiyama;Shigeru Ozaki

  • Mutation screening of the human Clock gene in circadian rhythm sleep disorders.

    Toshio Iwase;Naofumi Kajimura;Makoto Uchiyama;Takashi Ebisawa

  • Melatonin Rhythms in Delayed Sleep Phase Syndrome

    Kayo Shibui;Makoto Uchiyama;Masako Okawa

  • Subjective sleep quality and sleep problems in the general Japanese adult population.

    Yuriko Doi;Masumi Minowa;Makoto Uchiyama;Masako Okawa

  • A missense variation in human Casein kinase I Epsilon gene that induces functional alteration and shows an inverse association with circadian rhythm sleep disorders

    Atsuko Takano;Makoto Uchiyama;Naofumi Kajimura;Kazuo Mishima

  • Serine racemase binds to PICK1: potential relevance to schizophrenia.

    K Fujii;K Maeda;K Maeda;T Hikida;A K Mustafa

  • Randomized, DIM Light Controlled, Crossover test of Morning Bright Light Therapy for Rest-Activity Rhythm Disorders in Patients with Vascular Dementia and Dementia of Alzheimer's type

    Kazuo Mishima;Yasuo Hishikawa;Masako Okawa

  • Prolonged interval from body temperature nadir to sleep offset in patients with delayed sleep phase syndrome

    Shigeru Ozaki;Makoto Uchiyama;Shuichiro Shirakawa;Masako Okawa

  • Four congenitally blind children with circadian sleep-wake rhythm disorder.

    M. Okawa;T. Nanami;S. Wada;T. Shimizu

Frequent Co-Authors

Kiyohisa Takahashi
Kiyohisa Takahashi Shiga University of Medical Science
Kazuo Mishima
Kazuo Mishima Akita University
Akira Sawa
Akira Sawa Johns Hopkins University
Mary E. Hatten
Mary E. Hatten Rockefeller University
Harumasa Takano
Harumasa Takano National Institutes for Quantum and Radiological Science and Technology
Takashi Kanbayashi
Takashi Kanbayashi University of Tsukuba
Solomon H. Snyder
Solomon H. Snyder Johns Hopkins University School of Medicine
Hiroshi Matsuda
Hiroshi Matsuda Tokyo University of Agriculture and Technology
Hidenao Fukuyama
Hidenao Fukuyama Kyoto University
Jenae M. Neiderhiser
Jenae M. Neiderhiser Pennsylvania State University

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Exploring neuroscience often leads students to related fields like psychology, social work, and behavior analysis, each offering unique online learning opportunities. For those considering a career supporting individuals and communities, affordable msw programs online provide a flexible and cost-effective route to qualify as a social worker.

Students interested in applied behavior analysis—a discipline closely linked to brain science—can benefit from bcba programs online that pave the way to Board Certified Behavior Analyst (BCBA) credentials. Both fields prepare graduates for in-demand, people-centered roles.

For those wanting to fast-track their education, accelerated masters in social work and fastest online psychology degree options are available. Accelerated programs help motivated students complete degrees more quickly and start their careers sooner.

These related online degrees expand career pathways connected to neuroscience, making advanced study more accessible, flexible, and tailored to diverse professional goals.

Best Scientists Citing Masako Okawa

Trending Scientists

Recently Published Articles