Akira Usui

Relation between morningness–eveningness score and depressive symptoms among patients with delayed sleep phase syndrome

Takashi Abe, Yuichi Inoue, Yoko Komada et al. · Sleep Medicine · 2011 · 106 citations

Medicine, Psychiatry, Psychology +13

Quality of life in patients with narcolepsy with cataplexy, narcolepsy without cataplexy, and idiopathic hypersomnia without long sleep time: Comparison between patients on psychostimulants, drug-naïve patients and the general Japanese population

Akiko Ozaki, Yuichi Inoue, Kenichi Hayashida et al. · Sleep Medicine · 2011 · 102 citations

Medicine, Pharmacotherapy, Psychiatry +16

Sleep spindle frequency changes during the menstrual cycle

Yoshikazu Ishizuka, Charles P. Pollak, Shuichiro Shirakawa et al. · Journal of Sleep Research · 1994 · 77 citations · Full text

Medicine, Endocrinology, Neuroscience +17

Effectiveness of Aroma on Work Efficiency: Lavender Aroma during Recesses Prevents Deterioration of Work Performance

Reiko Sakamoto, Kazuya Minoura, Akira Usui et al. · Chemical Senses · 2005 · 72 citations · Full text

Social Sciences, Kinesiology, Psychology +13

Short Sleep Duration and Irregular Bedtime Are Associated with Increased Behavioral Problems among Japanese Preschool-Age Children

Yoko Komada, Takashi Abe, Isa Okajima et al. · The Tohoku Journal of Experimental Medicine · 2011 · 54 citations · Full text

Social Sciences, Behavioral Sciences, Psychology +15