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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Backward masking ： ウィキペディア英語版 Backward masking Backward masking has several meanings. *The original meaning of the term, in psychoacoustics, refers to temporal masking of quiet sounds that occur moments before a louder sound. *A similar meaning, in use in cognitive psychology, refers to a phenomenon wherein presenting one visual stimulus (a "mask" or "masking stimulus") immediately after another brief (≤ 50 ms) "target" visual stimulus leads to a failure to consciously perceive the first stimulus.〔Breitmeyer, B.G. and Ogmen, H. (2007) (''Visual masking'' ), Scholarpedia, 2(7):3330.〕 It is unknown how a later stimulus is able to block an earlier one. However, one theory for this phenomenon, known as the dual channel interaction theory, proposes that a fast signal created by the second stimulus is able to catch up to and overcome a slower signal sent from the first impulse. A similar phenomenon can occur when a masking stimulus precedes a target stimulus rather than follows it: this is known as forward masking.〔 While not consciously perceived, the masked stimulus can nevertheless still have an effect on cognitive processes such as context interpretation. It has been shown that visually masked stimuli can elicit motor responses in simple reaction-time tasks (e.g., Response Priming) independent of their conscious visibility.〔Vorberg, D., Mattler, U., Heinecke, A., Schmidt, T., & Schwarzbach, J.: ''Different time courses for visual perception and action priming.'' In: ''Proceedings of the National Academy of Sciences USA'', Nr. 100, 2003, p. 6275-6280.〕 It is a widespread belief that masked stimuli can be used for psychological manipulation (see subliminal messages, psychorama). However, the empirical evidence for subliminal persuasion is limited. *In popular music, "backward masking" incorrectly refers to backmasking, or hiding messages in sound recordings that are audible when played backward. ==References== 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「Backward masking」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.