1. Preface

   • Kiyohisa Takahashi

   EditorialNotes 28 July 2016 Pages: 1 - 1

2. Trying to understand sleep in Parkinson’s disease patients

   • Jean-Jacques Askenasy

   Review Article 28 July 2016 Pages: 2 - 14

3. Sleeping habits in Italian children and adolescents

   • Flavia Giannotti
   • Flavia Cortesi
   • Cristina Vagnoni

   Review Article 28 July 2016 Pages: 15 - 21

4. Evaluation of depression with actigraphy

   • Toshiro Ueda
   • Taijiro Mukai
   • Kazuhiko Hitomi

   Original Article 28 July 2016 Pages: 22 - 26

5. Seasonal variations of mood and behavior among Japanese graduate students

   • Henrik Pallos
   • Naoto Yamada
   • Masako Okawa

   Original Article 28 July 2016 Pages: 27 - 31

6. The numerical characteristics of repeated least squares spectrum for residual, a newly developed method for time series analysis

   • Einosuke Koga

   Technical Note 28 July 2016 Pages: 32 - 38

7. Morning sunlight can phase advance the circadian rhythm of young adults

   • Simon Smith
   • John Trinder

   Short Paper 28 July 2016 Pages: 39 - 41

8. Relationship between actigraphically estimated sleep patterns in Japanese school children with special reference to morningess — eveningness preference

   • Alexandru Gaina
   • Michikazu Sekine
   • Sadanobu Kagamimori

   Short Paper 28 July 2016 Pages: 42 - 44

9. Obstructive sleep apnea syndrome patients and hypozincemia

   • Chikaya Hattori
   • Kenji Suzuki
   • Tadao Nishimura

   Short Paper 28 July 2016 Pages: 45 - 46