马宏升的中风导致身体左侧颈动脉血流阻塞，而颈动脉正是大脑左半球供血的主要通道。

Maloney's stroke resulted from a clot in his left carotid artery, the main supplier of blood to the brain's left hemisphere.

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研究表明，音乐所涉及的闹区横跨大脑两半球—它激活了创造力和控制情绪所在的的右脑区，同时又激活了负责控制节奏和音调的左侧脑区。

The studies show that music engages both hemispheres of the brain - its creativity and emotion engage the right lobe, while rhythm and pitch engage the left.

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大脑左右半球明显对称是人类的特征，因为我们的大脑已经专门化了，左侧大脑更多地与语言能力相关。

Pronounced asymmetry between right and left brain hemispheres is a hallmark of humans, because our cerebrum has become specialized, with the left side more involved in language.

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