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The ''Tetris'' effect (also known as ''Tetris'' Syndrome) occurs when people devote so much time and attention to an activity that it begins to pattern their thoughts, mental images, and dreams. It takes its name from the video game ''Tetris''. People who play ''Tetris'' for a prolonged amount of time may then find themselves thinking about ways different shapes in the real world can fit together, such as the boxes on a supermarket shelf, the buildings on a street, or hallucinating pieces being generated and falling into place on an invisible layout.〔Earling, A. (1996, March 21–28). (The Tetris Effect: Do computer games fry your brain? ) ''Philadelphia City Paper''〕 In this sense, the ''Tetris'' effect is a form of habit. They might also dream about falling tetrominos when drifting off to sleep or see images of falling tetrominos at the edges of their visual fields or when they close their eyes.〔 In this sense, the ''Tetris'' effect is a form of hypnagogic imagery. ==Other examples== The ''Tetris'' effect can occur with other video games. It has also been known to occur with non-video games, such as the illusion of curved lines after doing a jigsaw puzzle, or the involuntary mental visualisation of Rubik's Cube algorithms common amongst speedcubers. On a perceptual level, sea legs are a kind of Tetris effect. A person newly on land after spending long periods at sea may sense illusory rocking motion, having become accustomed to the constant work of adjusting to the boat making such movements (see "Illusions of self-motion" and "Mal de debarquement"). The poem ''(Boots )'' by Rudyard Kipling describes the effect, resulting from repetitive visual experience during a route march: On the mental level, computer programming has resulted in dreams about coding. Mathematicians have reported dreaming of numbers or equations, for example Srinivasa Ramanujan, or Friedrich Engels who remarked "last week in a dream I gave a chap my shirt-buttons to differentiate, and he ran off with them". 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tetris effect」の詳細全文を読む スポンサード リンク
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