Jolted by the adrenaline rush, his heart beat faster and his muscles tensed, a reminder that even without goggles the brain cobbles together a world from whatever it can.

• 随着他的肾上腺素升高，他的心跳加速，肌肉也开始紧张。这个试验提醒人们：即使不用护目镜，大脑也会自己制造出一个想象中的世界。