The worry is that a teenager, after several hours of playing a virtual reality game, might get behind the wheel of a car and have balance and vision impairments similar to being drunk.

最令人担忧的是，青少年很可能在玩了几个小时的虚拟现实游戏后接着就去开车，此时他很可能出现醉酒般的平衡和视觉障碍。

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The brain behaves as if it were playing a virtual reality video game.

大脑表现得就像在玩虚拟现实电子游戏。

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Online game addiction can blur the line between reality and the virtual world.

沉迷于网络游戏会使现实世界与虚拟世界的界限愈发模糊。

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Now based at the Karolinska Institute in Stockholm, Sweden, Dr Ehrsson told CNN that his study has already caught the eye of virtual reality researchers and video game developers.

CNN: Scientists recreate out-of-body experience

Valve programmer Joe Ludwig's 'What We Learned Porting Team Fortress 2 to Virtual Reality' will explore the efforts of several employees over the last year to get the game to run in virtual reality goggles.

ENGADGET: Stay seated: Valve's Team Fortress 2 ported to virtual reality

Phobias may represent the biggest market for video-game and virtual-reality therapy, and clinics are popping up worldwide.

ECONOMIST: Monitor