我们的心脏一直都在跳动,因此它发出的声音也一直没有停止。心跳声意味着胸腔内有一大块肌肉正在努力将血液运输到身体各处,然而,除非极度恐惧或者刚刚锻炼完在大口喘气,否则几乎不会听到自己的心跳。而近期的一项研究显示,为了跟上从眼睛、耳朵、鼻子和其他感觉器官接收到的海量信息,大脑必须过滤掉一些背景噪音,包括我们的心跳。也就是说,我们的大脑会调低 Our heart has been beating all the time, so its voice has not stopped. The heartbeat means that a large piece of muscle in the chest is trying to transport the blood throughout the body, however, almost no heartbeat will be heard unless it is extremely frightened or wheezes at the end of exercise. A recent study shows that the brain must filter out some background noise, including our heartbeat, in order to keep up with the vast amount of information it receives from the eyes, ears, nose and other sensory organs. In other words, our brains will be lowered