Sakakura, S., Honma, M., Masaoka, Y., Manabe, R., Okuda, K., Yoshida, M., Yoshikawa, A., Matsui, M., Shoji, D., Kosuge, M., Kosuge, S., Miyo, K., Ida, M., Yamaguchi, F., Yokoe, T., Izumizaki, M. (2026). Distinct brain pathways link depressive symptoms due to respiratory dysfunction and reduced physical activity in patients with chronic obstructive pulmonary disease: A single-center observational pilot study. PLoS ONE. https://doi.org/10.1371/journal.pone.0340067