Materna Simone, Dicke Peter W, Thier Peter
University of Tübingen, Tübingen, Germany.
J Cogn Neurosci. 2008 Jan;20(1):108-19. doi: 10.1162/jocn.2008.20.1.108.
Abstract Previous imaging work has shown that the superior temporal sulcus (STS) region and the intraparietal sulcus (IPS) are specifically activated during the passive observation of shifts in eye gaze [Pelphrey, K. A., Singerman, J. D., Allison, T., & McCarthy, G. Brain activation evoked by perception of gaze shifts: The influence of context. Neuropsychologia, 41, 156-170, 2003; Hoffman, E. A., & Haxby, J. V. Distinct representations of eye gaze and identity in the distributed human neural system for face perception. Nature Neuroscience, 3, 80-84, 2000; Puce, A., Allison, T., Bentin, S., Gore, J. C., & McCarthy, G. Temporal cortex activation in humans viewing eye and mouth movements. Journal of Neuroscience, 18, 2188-2199, 1998; Wicker, B., Michel, F., Henaff, M. A., & Decety, J. Brain regions involved in the perception of gaze: A PET study. Neuroimage, 8, 221-227, 1998]. Are the same brain regions also involved in extracting gaze direction in order to establish joint attention? In an event-related functional magnetic resonance imaging experiment, healthy human subjects actively followed the directional cue provided by the eyes of another person toward an object in space or, in the control condition, used a nondirectional symbolic cue to make an eye movement toward an object in space. Our results show that the posterior part of the STS region and the cuneus are specifically involved in extracting and using detailed directional information from the eyes of another person to redirect one's own gaze and establish joint attention. The IPS, on the other hand, seems to be involved in encoding spatial direction and mediating shifts of spatial attention independent of the type of cue that triggers this process.
摘要 先前的成像研究表明，在被动观察目光转移时，颞上沟（STS）区域和顶内沟（IPS）会被特异性激活[佩尔弗里，K.A.，辛格曼，J.D.，艾利森，T.，& 麦卡锡，G. 目光转移感知诱发的大脑激活：情境的影响。《神经心理学》，41，156 - 170，2003；霍夫曼，E.A.，& 哈克斯比，J.V. 人类面部感知分布式神经系统中目光注视和身份的不同表征。《自然神经科学》，3，80 - 84，2000；普斯，A.，艾利森，T.，本廷，S.，戈尔，J.C.，& 麦卡锡，G. 人类观察眼睛和嘴巴运动时颞叶皮质的激活。《神经科学杂志》，18，2188 - 2199，1998；维克，B.，米歇尔，F.，埃纳夫，M.A.，& 德凯蒂，J. 参与目光感知的脑区：一项PET研究。《神经影像学》，8，221 - 227，1998]。同样的脑区是否也参与提取注视方向以建立共同注意呢？在一项事件相关功能磁共振成像实验中，健康人类受试者积极跟随他人眼睛提供的方向线索看向空间中的一个物体，或者在对照条件下，使用非方向符号线索向空间中的一个物体进行眼动。我们的结果表明，STS区域的后部和楔叶特别参与从他人眼睛中提取并利用详细的方向信息来重新定向自己的目光并建立共同注意。另一方面，IPS似乎参与编码空间方向并介导空间注意的转移，而与触发该过程的线索类型无关。
