Ohira H, Osumi T, Matsunaga M, Yamakawa K. Pro-inflammatory cytokine predicts reduced rejection of unfair financial offers.  Neuro Endocrinol Lett. 2013 Jan;  34(1): 47-51

Matsunaga M, Isowa T, Yamakawa K, Kawanishi Y, Tsuboi H, Kaneko H, Sadato N, Oshida A, Katayama A, Kashiwagi M, Ohira H. Psychological and physiological responses to odor-evoked autobiographic memory.  Neuro Endocrinol Lett. 2011 Jan;  32(6): 774-780

Matsunaga M, Isowa T, Yamakawa K, Tsuboi H, Kawanishi Y, Kaneko H, Kasugai K, Yoneda M, Ohira H. Association between perceived happiness levels and peripheral circulating pro-inflammatory cytokine levels in middle-aged adults in Japan.  Neuro Endocrinol Lett. 2011 Jan;  32(4): 458-463

Matsunaga M, Sato S, Isowa T, Tsuboi H, Konagaya T, Kaneko H, Ohira H. Profiling of serum proteins influenced by warm partner contact in healthy couples.  Neuro Endocrinol Lett. 2009 Jan;  30(2): 227-236

Tsuboi H, Matsunaga M, Tsujiguchi H, Kannon T, Hosomichi K, Sato T, Tajima A, Yoshida N, Hara A, Nakamura H. Elevated ratio of serum anandamide to arachidonic acid intake in community-dwelling women with high depressive symptoms.  Neuro Endocrinol Lett. 2022 Sep;  43(3): 145-153

Matsunaga M, Ohtsubo Y, Masuda T, Noguchi Y, Yamasue H, Ishii K. Exploratory research on genetic polymorphisms associated with positive empathy and trait forgivingness among the Japanese.  Neuro Endocrinol Lett. 2023 Dec;  44(8): 506-516