科学60秒:头球好的人会“脑残”

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Michael Lipton of the Albert Einstein College of Medicine
the Radiological Society of North America's Annual Meeting American football and international hockey have gotten hammered for their brutal hits, which can lead to serious brain injury. But soccer players are also getting their heads examined. A new study used diffusion tensor imaging, a kind of MRI that can pick up on changes to nerve connections, to look for signs of injury in soccer players who head the ball — a lot. "The suspicion, concern and the indications of our findings are that changes to the brain similar to what happens when someone has actual head trauma occur in the brain of someone due to heading." Michael Lipton of the Albert Einstein College of Medicine. The results were presented at the Radiological Society of North America's Annual Meeting. An occasional heading of a soccer ball isn't likely to be a problem — the ball isn't hard enough to directly injure nerve fibers in most cases. But frequent heading might be causing other harm that leads to a deterioration of crucial connections. The researchers found that the changes came in players averaging 1,000 to 1,500 head hits a year. The advice to them: wise up — use your foot.橄榄球和曲棍球因为他们野蛮的撞击而受到排斥,这些撞击可以导致严重的大脑损伤。但是这些运动员也接受脑部的检查。 一项利用扩散张量造影的核磁共振技术(收集神经信号变化),被用来寻找那些使用头球的运动员脑部手上的位点。 “质疑、忧虑和研究结果显示出来的迹象都在改变与曾经受过创伤的大脑相似的因为头球所致创伤的大脑”,艾伯特爱因斯坦医学院的Michael Lipton这么说。这个结果被揭示在北美放射学联合的年会上。 足球给头部偶然的撞击也许不是什么问题,因为在大多数案例中球没有足够硬到能够给神经纤维造成直接的伤害。但是频繁的撞击也许会造成其他伤害,并且导致严重的神经连接损伤。科学家们发现平均每年1000到1500次头部的撞击可能会导致这种情况的发生。因此,给这些人的建议是:用脚做个聪明人。