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conducted, defense, exceptional, lean, legend, mock, molecules, ounce, perceived, sensitivity

Amazing Facts About Your Senses

Sight, hearing, taste, touch, and smell: Our five senses are what help us make, well, sense of the world around us. But scientists are still discovering how they workand how you can sharpen yours. Read on for a comprehensive look at the new science of your senses.

source: PARADE


The human eye is an exceptional tool for gathering light; it can distinguish among 500 shades of gray and spot the light of a candle 14 miles away. But for all the eye’s extraordinary ability, seeing is a function of the brainhumansvisual cortex is more developed than that of any other mammal. Vision demands that the brain differentiate foreground from background, and edges from linesskills that even the world’s most powerful computers have been unable to match. Your brain makes sense of shapes and symbols by putting them together like a jigsaw puzzle, organizing fragments into a coherent whole. (Movies work because the brain stitches a ­series of frames into an unbroken stream.) We develop this ability as infantswhich explains why patients who grew up blind but have had their sight restored often struggle to understand what they are seeing: Their brains can’t initially distinguish an object from its background, or accurately separate two over­lapping objects. (A chair and desk would be perceived as a single flat image, like an abstract painting made of rectangles.) Optical illusions work by exploiting the mind’s tendency to try to find order in patternsa face in the pockmarks on a cement wallor make sense of an impossible image, like the endless climbing staircase in an Escher drawing.

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 abstract第四級[形容詞] 抽象的; [名詞] 摘要
 accurately第三級accurate(準確的) 的衍生的副詞
 amazing第三級[形容詞] 驚人的,令人吃驚的; amaze(使大為驚奇) 的現在分詞
 background第三級[名詞] 背景
 cement第四級[動詞] 黏緊,黏牢; [名詞] 水泥
 demands第四級demand(要求,請求) 的第三人稱單數現在式; demand(要求,請求) 的複數
 distinguish第四級[動詞] 區別;識別
 frames第四級frame(給...裝框子) 的第三人稱單數現在式; frame(骨架;結構) 的複數
 image第三級[名詞] 肖像影像
 infants第四級infant(嬰兒) 的複數
 initially第四級initial(開始的,最初的) 的衍生的副詞; [副詞] 最初;開頭
 restored第四級restore(恢復) 的過去式及過去分詞
 shades第三級shade(遮蔽,蔽蔭) 的第三人稱單數現在式; shade(蔭;陰涼處;陰暗) 的複數
 stitches第三級stitch(縫;繡;編結) 的第三人稱單數現在式; stitch(一針;(縫合傷口的)針線;針法) 的複數
 tendency第四級[名詞] 傾向;癖性
 vision第三級[名詞] 視力;視覺;洞察力
 visual第四級[形容詞] 視力的;光學的