Turk David J, Banfield Jane F, Walling Bobbi R, Heatherton Todd F, Grafton Scott T, Handy Todd C, Gazzaniga Michael S, Macrae C Neil
Department of Psychological and Brain Sciences, Center for Cognitive Neuroscience, Dartmouth College, Hanover, NH 03755, USA.
Neuroimage. 2004 Jul;22(3):1281-90. doi: 10.1016/j.neuroimage.2004.02.037.
The current experiment examined the neural substrates of response selection, comparing conditions that required participants to make criterion-free selections from sets of same-sex faces (i.e., inconsequential decision) to choosing a dinner date from opposite-sex faces (i.e., consequential decision). In each of these tasks, either a single face (i.e., no choice) or two or three faces (i.e., free choice) appeared for selection. The results revealed that regions of dorsal premotor cortex (PMd) and parietal cortex bilaterally, as well as an area along the medial surface of the superior frontal gyrus, were activated by both consequential and inconsequential decisions, thereby providing evidence for a common selection network. Consequential decisions were further indexed by activation of the insula/ventrolateral prefrontal cortex (BA 47) and the paracingulate gyrus (BA 32). The implications of these findings for current accounts of response selection and social-cognitive functioning are considered.
当前的实验研究了反应选择的神经基础，比较了要求参与者从同性面孔集合中进行无标准选择（即无关紧要的决策）与从异性面孔中选择晚餐约会对象（即重要决策）的条件。在这些任务中的每一项中，要么出现一张面孔（即无选择），要么出现两张或三张面孔（即自由选择）以供选择。结果显示，双侧背侧运动前皮层（PMd）和顶叶皮层区域，以及额上回内侧表面的一个区域，在重要决策和无关紧要的决策中均被激活，从而为一个共同的选择网络提供了证据。重要决策还通过脑岛/腹外侧前额叶皮层（BA 47）和扣带旁回（BA 32）的激活得到进一步体现。本文考虑了这些发现对当前反应选择和社会认知功能理论的启示。
