Weekly Topic


News Release from University of Oxford on November 11, 2010.


© flickr & Jef Harris

ゲームのテトリスが,トラウマ(心的外傷)が原因で起こるフラッシュバック(過去の出来事を突然,鮮明に思い出す現象)を防ぐという。衝撃的な映像を見た後にテトリスをする群,Pub Quiz Machine 2008という言葉で行うゲームをする群,何もしない群に健康な被験者を分けた実験で,テトリスはフラッシュバックを減少,Pub Quizは増加させた。研究者は,フラッシュバック発生には脳の知覚的情報を扱う回路が必要だが,心的外傷後6時間以内ならこの回路をテトリスのような知覚的活動に使ってしまうことでフラッシュバックを防げると考えている。(吉田素子)

In earlier laboratory work(1) the Oxford team showed that playing Tetris(2) after traumatic(3) events could reduce memory flashbacks(4) in healthy volunteers. These are a laboratory model(5) of the types of intrusive memories(6) associated with(7) post-traumatic stress disorder(8) (PTSD).

In this new experimental(9) study the researchers(10) compared the effectiveness(11) of Tetris at reducing flashbacks with Pub Quiz Machine 2008(12), a word-based(13) quiz game. They found that whilst(14) playing Tetris after viewing traumatic images reduced flashbacks by contrast(15) playing Pub Quiz increased the frequency(16) of flashbacks.

A report of the research is published in this week’s edition of the journal PLoS ONE(17).

In two separate experiments, the team showed a film to healthy volunteers that included traumatic images of injury from a variety of(18) sources, including adverts(19) highlighting(20) the dangers of drink driving(21) -- a recognised way to study the effects of trauma(22) in the laboratory.

In the first experiment, after waiting for 30 minutes, 20 volunteers played Tetris for 10 minutes, 20 played Pub Quiz, in which they had to select one of four on-screen(23) answers, for 10 minutes and 20 did nothing. Those who had played Tetris experienced significantly fewer flashbacks of the film than those who did nothing, whilst those who played Pub Quiz experienced significantly more flashbacks.

In the second experiment, this wait was extended to four hours, with 25 volunteers in each group. Those who played Tetris again had significantly fewer flashbacks that the other two groups. In both experiments, all groups were equally able to recall specific details of the film.

(1) 実験室での研究 (2) テトリス (3) 衝撃的な (4) フラッシュバック (5) 実験モデル
(6) 侵入的回想 (7) ~と関連した (8) 心的外傷後ストレス障害 (9) 実験的 (10) 研究者
(11) 有効性 (12) (クイズゲームのソフトウェアの名称) (13) ~に基づく (14) ~だが(= while)
(15) それに反して (16) 頻度 (17) (雑誌名) (18) 様々な (19) 広告 (20) ~を強調する
(21) 飲酒運転 (22) 心的外傷  (23) 画面上の



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