Violent games 'affect behaviour'	SOS，暴力游戏！
Previous research has suggested a link between violence and game playing. Violent computer games may make people more likely to act aggressively, a study says. Previous research has found people who play such games are more likely to be aggressive but some say this just shows violent people gravitate towards them. But a team from the University of Missouri-Columbia said their study which monitored the brain activity of 39 game players suggests a causal link. The findings were published on the New Scientist website. The researchers measured a type of brain activity called the P300 response which reflects the emotional impact of an image. When shown images of real-life violence, people who played violent video games were found to have a diminished response. However, when the same group were shown other disturbing images such as dead animals or ill children they had a much more natural response. When the game players were given the opportunity to punish a pretend opponent those with the greatest reduction in P300 meted out the severest punishments. Psychologist Bruce Bartholow, the lead researcher of the study which will be published in full in the Journal of Experimental Social Psychology later this year, said: "As far as I'm aware, this is the first study to show that exposure to violent games has effects on the brain that predict aggressive behaviour. "People who play a lot of violent video games didn't see them as much different from neutral. "They become desensitised. However, their responses are still normal for the non-violent negative scenes." The findings will back up what many have argued over recent years with the growth in games with scenes of graphic violence. (Agencies)	研究表明，玩暴力电脑游戏会让人变的更具侵略性。 此前的调查发现爱玩暴力游戏的人侵略性较强，但是有人说这只能说明具有暴力倾向的人喜欢玩暴力游戏。 密苏里哥伦比亚大学的一个研究小组说，他们对39个游戏"玩家"的脑部运动进行了监控，结果发现玩暴力游戏确实会导致暴力倾向。 这个研究结果公布在《新科学家》杂志的网页上。 研究人员对一种名为"P300反应"的脑部活动进行了测量，"P300反应"体现了图像对人情绪的影响。 当把现实中的暴力画面放在暴力游戏玩家面前时，他们的反应不是很强烈。 然而，当看到其它的消极画面时，比如，死去的动物或生病的孩子，他们的反应则比较正常。 但是，当一个虚拟对手出现，游戏玩家得到惩罚对手的机会时，P300反应最弱的玩家给予了对手最严厉的惩罚。 这项研究的领头人心理学家布鲁斯·巴索洛说："据我了解，这项研究首次揭示玩暴力游戏会对预知进攻行为的脑部组织产生影响。"研究报告全文将于今年晚些时候在《实验社会心理学》杂志上发表。 "爱玩视频暴力游戏的人并不觉得自己跟其他人有什么不一样。他们的感觉变得迟钝。但是在看到非暴力的消极场景时，他们的反映还是正常的。" 近年来，带有暴力场景的电脑游戏不断增多，很多人对此提出异议，而此项研究结果则将成为这些人的有力支持。 P300是一个跟独特讯息有关的波形（即在刺激画面呈现之后300毫秒时，大脑所出现的一个正波。 (中国日报网站编译)