One of the post-doctoral researchers introduces a pair of experimental animals, Anna and Hedwig, that underwent brain surgery in March and April respectively.

• 为了探究猴类大脑的工作原理，工作人员必须破坏部分脑部组织，这涉及到晃动绒猴头部，对其头骨穿孔，嵌入针状物体，注射少量毒液。