Context-dependent cortical activation in response to financial reward and penalty: an event-related fMRI study. - Yuko Akitsuki; Motoaki Sugiura; Jobu Watanabe; Keiichi Yamashita; Yuko Sassa; Shuichi Awata; Hiroo Matsuoka; Yasuhiro Maeda; Yoshihiko Matsue; Hiroshi Fukuda; Ryuta Kawashima (NeuroImage, 2003)