左耳边的手机处于关机状态，而右耳一侧的手机正在播放一段长达50分钟的留言。
The phone on the left ear was turned off, while the one on the right received a 50-minute recorded message.
如果在头部两侧放置已关机的手机(右图)，大脑的活动将维持正常状态。
In a brain with phones placed to both sides of the head but turned off (right), activity was normal.
一边的手机处于关机状态，另一侧的进行50分钟的通话。
One phone was turned off, while the other had an active call going for 50 minutes.
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