Thompson James C, Hardee Jillian E, Panayiotou Anita, Crewther David, Puce Aina
Department of Psychology and Krasnow Institute for Advanced Study, George Mason University, MSN 3F5, Fairfax, VA 22030, USA.
Neuroimage. 2007 Sep 1;37(3):966-73. doi: 10.1016/j.neuroimage.2007.05.058. Epub 2007 Jun 14.
The superior temporal sulcus (STS) and surrounding lateral temporal and inferior parietal cortices are an important part of a network involved in the processing of biological movement. It is unclear whether the STS responds to the movement of different body parts uniformly, or if the response depends on the body part that is moving. Here we examined brain activity to recognizing sequences of face and hand movements as well as radial grating motion, controlling for differences in movement dynamics between stimuli. A region of the right posterior STS (pSTS) showed common activation to both face and hand motion, relative to radial grating motion, with no significant difference between responses to face and hand motion in this region. Distinct responses to face motion relative to hand motion were observed in the right mid-STS, while the right posterior inferior temporal sulcus (pITS) and inferior parietal lobule (IPL) showed greater responses to hand motion relative to face motion. These findings indicate that while there may be distinct processing of different body part motion in lateral temporal and inferior parietal cortices, the response of the pSTS is not body part specific. This region may provide input to other parts of a network involved with processing human actions with a high-level visual description of biological motion.
颞上沟（STS）以及周围的颞叶外侧和顶下皮质是参与生物运动处理的网络的重要组成部分。目前尚不清楚颞上沟对不同身体部位的运动反应是否一致，或者这种反应是否取决于正在运动的身体部位。在这里，我们研究了大脑活动，以识别面部和手部运动序列以及径向光栅运动，并控制刺激之间运动动力学的差异。相对于径向光栅运动，右侧后颞上沟（pSTS）的一个区域对面部和手部运动均表现出共同激活，该区域对面部和手部运动的反应之间无显著差异。在右侧颞上沟中部观察到对面部运动相对于手部运动的不同反应，而右侧后颞下沟（pITS）和顶下小叶（IPL）对手部运动相对于面部运动表现出更大的反应。这些发现表明，虽然颞叶外侧和顶下皮质可能对不同身体部位的运动进行不同处理，但pSTS的反应并非特定于身体部位。该区域可能为参与以生物运动的高级视觉描述处理人类动作的网络的其他部分提供输入。
