University of Cologne, Cologne, Germany.
Soc Neurosci. 2009;4(1):40-8. doi: 10.1080/17470910801938023.
In a recent experiment with functional magnetic-resonance imaging, we found that brain activity in the extrastriate body area (EBA) distinguished between observed self- and other-generated movements, being significantly higher during observation of someone else's movement. Here, we investigated further the role of EBA in self-other distinctions using low-frequency repetitive transcranial magnetic stimulation (rTMS). As compared with rTMS applied over a control site, rTMS applied over the EBA increased reaction times, without affecting accuracy, for the detection of other-generated movements. Performance on a control motion-direction detection task was unaffected. These findings provide additional evidence for the role of the EBA in processing information necessary for identifying ourselves as agents of self-generated movements.
在最近一项使用功能磁共振成像的实验中，我们发现，额下回后部（EBA）的大脑活动可以区分观察到的自我和他人产生的运动，在观察他人运动时，EBA 的活跃度明显更高。在这里，我们使用低频重复经颅磁刺激（rTMS）进一步研究了 EBA 在自我与他人区分中的作用。与施加于对照部位的 rTMS 相比，施加于 EBA 的 rTMS 增加了对他人产生的运动的检测的反应时间，而不影响准确性。对控制运动方向检测任务的表现没有影响。这些发现为 EBA 在处理识别自我为自我产生运动的主体所需的信息方面的作用提供了额外的证据。
