研究：老年人买便宜货可增强记忆力
<p><span word="Shopping">Shopping</span> <span word="can">can</span> <span word="boost">boost</span> <span word="the">the</span> <span word="brainpower">brainpower</span> <span word="of">of</span> <span word="the">the</span> <span word="elderly">elderly</span>, <span word="researchers">researchers</span> <span word="have">have</span> <span word="found">found</span>.</p><p>研究人员发现，购物能提高老年人的智力。</p><p><span word="Duke">Duke</span> <span word="University">University</span> <span word="scientists">scientists</span> <span word="found">found</span> <span word="older">older</span> <span word="adults">adults</span> <span word="seem">seem</span> <span word="to">to</span> <span word="need">need</span> <span word="extra">extra</span> <span word="brainpower">brainpower</span> <span word="to">to</span> <span word="make">make</span> <span word="shopping">shopping</span> <span word="decisions">decisions</span> - <span word="especially">especially</span> <span word="ones">ones</span> <span word="that">that</span> <span word="rely">rely</span> <span word="on">on</span> <span word="memory">memory</span>.</p><p>美国杜克大学（<span word="Duke">Duke</span> <span word="University">University</span>）的科学家们观察到，老年人在作出购物决定（尤其是那些要依靠记忆力的决定）时，似乎需要动用额外的脑力。</p><p><span word="To">To</span> <span word="do">do</span> <span word="this">this</span>, <span word="they">they</span> <span word="discovered">discovered</span> <span word="they">they</span> <span word="use">use</span> <span word="an">an</span> <span word="additional">additional</span> <span word="brain">brain</span> <span word="area">area</span> <span word="to">to</span> <span word="remember">remember</span> <span word="competing">competing</span> <span word="consumer">consumer</span> <span word="products">products</span> <span word="and">and</span> <span word="choose">choose</span> <span word="the">the</span> <span word="better">better</span> <span word="one">one</span> - <span word="meaning">meaning</span> <span word="they">they</span> <span word="don">don</span>'<span word="t">t</span> <span word="miss">miss</span> <span word="a">a</span> <span word="bargain">bargain</span>. <span word="Older">Older</span> <span word="shoppers">shoppers</span> <span word="use">use</span> <span word="an">an</span> <span word="additional">additional</span> <span word="brain">brain</span> <span word="area">area</span> <span word="to">to</span> <span word="remember">remember</span> <span word="competing">competing</span> <span word="consumer">consumer</span> <span word="products">products</span> <span word="and">and</span> <span word="choose">choose</span> <span word="the">the</span> <span word="better">better</span> <span word="one">one</span> - <span word="meaning">meaning</span> <span word="they">they</span> <span word="don">don</span>'<span word="t">t</span> <span word="miss">miss</span> <span word="a">a</span> <span word="bargain">bargain</span>.</p><p>为了作出购物决定，老年人会用一个额外的大脑区域去记住各类产品，然后从中挑选出最优的——这意味着他们不会错过任何一件便宜货。</p><p>'<span word="The">The</span> <span word="study">study</span> <span word="gives">gives</span> <span word="a">a</span> <span word="bright">bright</span> <span word="picture">picture</span>, <span word="actually">actually</span>,' <span word="Nichole">Nichole</span> <span word="Lighthall">Lighthall</span>, <span word="who">who</span> <span word="led">led</span> <span word="the">the</span> <span word="research">research</span>, <span word="appearing">appearing</span> <span word="Nov">Nov</span>. 19 <span word="in">in</span> <span word="the">the</span> <span word="Journal">Journal</span> <span word="of">of</span> <span word="Neuroscience">Neuroscience</span>.</p><p>这项研究发表于11月19日的《神经科学杂志》（<span word="Journal">Journal</span> <span word="of">of</span> <span word="Neuroscience">Neuroscience</span>）。项目负责人尼科尔·莱特霍尔（<span word="Nichole">Nichole</span> <span word="Lighthall">Lighthall</span>）认为：“事实上，此研究能为医学界带来一个明朗的未来。”</p><p>'<span word="It">It</span> <span word="suggests">suggests</span> <span word="that">that</span> <span word="for">for</span> <span word="healthy">healthy</span> <span word="older">older</span> <span word="adults">adults</span>, <span word="even">even</span> <span word="though">though</span> <span word="their">their</span> <span word="memory">memory</span> <span word="might">might</span> <span word="not">not</span> <span word="be">be</span> <span word="as">as</span> <span word="good">good</span>, <span word="they">they</span> <span word="can">can</span> <span word="naturally">naturally</span> <span word="recruit">recruit</span> <span word="other">other</span> <span word="brain">brain</span> <span word="regions">regions</span> <span word="that">that</span> <span word="are">are</span> <span word="not">not</span> <span word="typically">typically</span> <span word="involved">involved</span> <span word="in">in</span> <span word="the">the</span> <span word="task">task</span>.</p>
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