mirror neuron system in common marmosets

在这项研究中，我们调查是否存在镜像神经元在普通绒猴（Callithrix jacchus）。首先，我们从上级颞沟后部发现了对他人抓握动作有反应的细胞，然后将逆行荧光示踪剂（CTB-Alexa 555）注入该区域。一周后，通过使用荧光立体显微镜，我们能够识别腹侧运动前皮质中含有标记细胞的区域。最后，我们将线性阵列多触点电极植入腹侧运动前区皮质的标记区域和上级颞沟的示踪剂注射部位，并在清醒状态下记录多个单位。我们发现腹侧前运动皮层中有相当数量的多单位是镜像神经元，它们在执行抓握动作和观察实验者执行各种抓握动作时都表现出显著的反应。

In this study, we investigate whether mirror neurons exist in common marmosets (Callithrix jacchus). First we discovered cells responsive to other's grasping action from a posterior part of the superior temporal sulcus, then injected retrograde fluorescent tracer (CTB- Alexa555) into the region. One week later, by using a fluorescence stereomicroscope, we were able to identify the regions containing the labeled cells in the ventral premotor cortex. Finally, we implanted linear array multi-contact electrodes into both labeled regions in the ventral premotor cortex and tracer injection site in the superior temporal sulcus, and recorded multi-units under awake condition. We found a significant number of multi-unit in the ventral premotor cortex were mirror neurons which showed significant responses both when performing a grasping action and when observing the experimenter performing various grasping actions.