Sadness enhances the experience of pain via neural activation in the anterior cingulate cortex and amygdala: An fMRI study. - Atsuo Yoshino; Yasumasa Okamoto; Keiichi Onoda; Shinpei Yoshimura; Yoshihiko Kunisato; Yoshihiko Demoto; Go Okada; Shigeto Yamawaki (NeuroImage, 2010)