In the zebra finches, the LM did what they expected, responding more to dots that seemed to move from back-to-front.

在斑胸草雀中，中脑豆状核的表现符预期，对看似从后向前移动的点反应更强烈。

Research has shown that a hummingbird’s LM is bigger relative to its brain size than in other birds, and these scientists wondered if it processes visual information differently, too.

究显示，蜂鸟的中脑豆状核相对于其脑小来说比其他鸟类更，这些科学家怀疑视觉信息的方式也不同。

To find out, they put half a dozen hummingbirds under anesthesia and exposed the area of their brains where the LM is located, inserting tiny electrodes to record activity in their neurons.

为了找出答案，他们给半打蜂鸟进行了麻醉， 并暴露了们脑中中脑豆状核所在的位置， 插入微型电极来记录神经元的活动。

There’s a small spot in the brain called the nucleus of the optic tract in humans and the lentiformis mesencephalic or LM in birds.

在人脑中有一个叫做视束核的小区域，在鸟类中则称为中脑豆状核或LM。