"This pruning process, the dying off of cells, is a very important part of brain development," Romanski said.
“这个削减过程，这些死亡的细胞，对于大脑发育而言非常重要，”Romanski说。
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"This very nicely builds on previous research and tries to explain why this increase in brain size might be, and what they find is it's because of an increased number of neurons," Romanski said.