Violent games 'affect behaviour'	SOS，暴力游戲！
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，玩暴力電腦游戲會讓人變的更具侵略性。 此前的調查發現愛玩暴力游戲的人侵略性較強，但是有人說這只能說明具有暴力傾向的人喜歡玩暴力游戲。 密蘇里哥倫比亞大學的一個研究小組說，他們對39個游戲"玩家"的腦部運動進行了監控，結果發現玩暴力游戲確實會導致暴力傾向。 這個研究結果公布在《新科學家》雜志的網頁上。 研究人員對一種名為"P300反應"的腦部活動進行了測量，"P300反應"體現了圖像對人情緒的影響。 當把現實中的暴力畫面放在暴力游戲玩家面前時，他們的反應不是很強烈。 然而，當看到其它的消極畫面時，比如，死去的動物或生病的孩子，他們的反應則比較正常。 但是，當一個虛擬對手出現，游戲玩家得到懲罰對手的機會時，P300反應最弱的玩家給予了對手最嚴厲的懲罰。 這項研究的領頭人心理學家布魯斯·巴索洛說："據我了解，這項研究首次揭示玩暴力游戲會對預知進攻行為的腦部組織產生影響。"研究報告全文將于今年晚些時候在《實驗社會心理學》雜志上發表。 "愛玩視頻暴力游戲的人并不覺得自己跟其他人有什么不一樣。他們的感覺變得遲鈍。但是在看到非暴力的消極場景時，他們的反映還是正常的。" 近年來，帶有暴力場景的電腦游戲不斷增多，很多人對此提出異議，而此項研究結果則將成為這些人的有力支持。 P300是一個跟獨特訊息有關的波形（即在刺激畫面呈現之后300毫秒時，大腦所出現的一個正波。 (中國日報網站編譯)