On February 17 former Chicago Bears football player Dave Duerson killed himself with a gun shot to the chest.

Doctors later found that Duerson had a condition in common with more than 20 other dead football players in the U.S.: Chronic Traumatic Encephalopathy or CTE, a degenerative disease linked to [--1--], depression and dementia. And Duerson thought he had it. Which is why he took great care to leave his brain [--2--] for study.

And concerns have been growing that the concussions and other [--3--] that are common in the NFL might be to blame.

Last week the Canadian Sports Concussion Project announced the results from brain autopsies of four CFL football players. Bobby Kuntz, a former Toronto Argonaut and Jay Roberts, who played for the Ottawa Roughriders, showed classic signs of CTE. But Peter Ribbons, a Winnipeg Blue Bomber, and Tony Proudfoot, from the Montreal Alloettes, showed no signs. All four played when it was common to [--4--] with head-first tackles.

The Canadian Project seeks more brain donations from former contact sport athletes. To try to find out why some seem able to avoid CTE, while others [--5--] are not.
【視聽版科學(xué)小組榮譽出品】
impulsive behavior intact head injuries spear opponents tragically
足球運動員的"隱形殺手" 二月17日,前芝加哥熊隊足球運動員Dave Duerson用一把槍抵著自己的胸部自殺了。 醫(yī)護人員隨后發(fā)現(xiàn)Duerson和其他20多名美國死亡的足球運動員有一個普遍特性:慢性創(chuàng)傷性腦?。ê喎QCET),一種與沖動行為、抑郁以及癡呆相關(guān)的變性疾病。而Duerson認為自己得了這種病,正因為如此,他小心翼翼的保存自己大腦的完整以供研究。 隨著社會輿論的不斷關(guān)注,在NFL中常見的腦震蕩或其他腦損傷可能會承擔(dān)一些責(zé)任。 上周,加拿大運動性腦震蕩項目宣布了4名CFL足球運動員的大腦解剖結(jié)果。前多倫多亞爾古隊隊員Bobby Kuntz和曾為渥太華野蠻騎士隊踢球的Jay Roberts有典型的CTE癥狀。但是溫尼伯藍色轟炸機隊的Peter Ribbons和蒙特利爾云雀隊的Tony Proudfoot并無癥狀。這四位的共同特點都是用頭部攔截對手的球。 加拿大項目旨在從前接觸型運動項目運動員中獲得更多的大腦捐贈,試圖找出為什么有些運動員可以避免CTE,而有些卻悲劇的無法避免。