They're producing electrical signals in the brain they're not recording from the brain, but it's not that big of a difference.

它们只能向大脑发出信号,而不能记录反馈大脑的信号,但是这两者技术要求差别不大

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So it's not a big difference.

所以这其实也没有很大区别。

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But whether or not you do so doesn't seem to make a big difference.

但不论你是否选择这样做,都不会有什么太大的影响

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