Pregnancy alters woman's brain 'for at least two years' 初次怀孕对女性大脑的影响“至少持续两年”
<p>媒体英语 <span word="Pregnancy">Pregnancy</span> <span word="alters">alters</span> <span word="woman">woman</span>'<span word="s">s</span> <span word="brain">brain</span> '<span word="for">for</span> <span word="at">at</span> <span word="least">least</span> <span word="two">two</span> <span word="years">years</span>' 初次怀孕对女性大脑的影响“至少持续两年” </p><p><span word="Play">Play</span> <span word="audio">audio</span> <span word="file">file</span>怀孕会减少女性大脑特定区域中灰质的总体积，然而这不仅能加强孕妇与其婴儿之间的联系，还可以帮助产妇适应母亲这个新身份。科学家们对 25 名初孕女性进行了脑部扫描，结果显示她们的大脑在怀孕期间发生了结构性的改变，且这一变化会在产后至少持续两年。请听 <span word="Robert">Robert</span> <span word="Pigott">Pigott</span> 的报道。</p><p><span word="When">When</span> <span word="the">the</span> <span word="brains">brains</span> <span word="of">of</span> 25 <span word="first">first</span>-<span word="time">time</span> <span word="mothers">mothers</span> <span word="were">were</span> <span word="scanned">scanned</span> <span word="soon">soon</span> <span word="after">after</span> <span word="they">they</span> <span word="had">had</span> <span word="become">become</span> <span word="pregnant">pregnant</span> <span word="and">and</span> <span word="again">again</span> <span word="after">after</span> <span word="they">they</span> <span word="had">had</span> <span word="given">given</span> <span word="birth">birth</span>, “<span word="substantial">substantial</span>” <span word="reductions">reductions</span> <span word="in">in</span> <span word="the">the</span> <span word="volume">volume</span> <span word="of">of</span> <span word="grey">grey</span> <span word="matter">matter</span> <span word="were">were</span> <span word="revealed">revealed</span>.</p><p><span word="Pregnant">Pregnant</span> <span word="women">women</span> <span word="have">have</span> <span word="often">often</span> <span word="complained">complained</span> <span word="of">of</span> <span word="brain">brain</span> <span word="fog">fog</span> <span word="and">and</span> <span word="poor">poor</span> <span word="memory">memory</span>, <span word="but">but</span> <span word="researchers">researchers</span> <span word="at">at</span> <span word="Leiden">Leiden</span> <span word="University">University</span> <span word="in">in</span> <span word="the">the</span> <span word="Netherlands">Netherlands</span> <span word="and">and</span> <span word="the">the</span> <span word="Autonomous">Autonomous</span> <span word="University">University</span> <span word="of">of</span> <span word="Barcelona">Barcelona</span> <span word="say">say</span> <span word="that">that</span> <span word="rather">rather</span> <span word="than">than</span> <span word="indicating">indicating</span> <span word="a">a</span> <span word="simple">simple</span> <span word="loss">loss</span> <span word="of">of</span> <span word="mental">mental</span> <span word="capacity">capacity</span> <span word="or">or</span> <span word="intelligence">intelligence</span>, <span word="the">the</span> <span word="changes">changes</span> <span word="represent">represent</span> <span word="a">a</span> <span word="pruning">pruning</span> <span word="and">and</span> <span word="refinement">refinement</span> <span word="of">of</span> <span word="brain">brain</span> <span word="circuits">circuits</span>. <span word="They">They</span> <span word="say">say</span> <span word="the">the</span> <span word="changes">changes</span> <span word="largely">largely</span> <span word="affect">affect</span> <span word="areas">areas</span> <span word="of">of</span> <span word="the">the</span> <span word="brain">brain</span> <span word="associated">associated</span> <span word="with">with</span> <span word="the">the</span> <span word="ability">ability</span> <span word="to">to</span> <span word="attribute">attribute</span> <span word="thoughts">thoughts</span> <span word="and">and</span> <span word="feelings">feelings</span> <span word="to">to</span> <span word="oneself">oneself</span> <span word="and">and</span> <span word="other">other</span> <span word="people">people</span>, <span word="and">and</span> <span word="could">could</span> <span word="help">help</span> <span word="women">women</span> <span word="adapt">adapt</span> <span word="to">to</span> <span word="motherhood">motherhood</span> <span word="by">by</span> <span word="recognising">recognising</span> <span word="threats">threats</span> <span word="to">to</span> <span word="their">their</span> <span word="baby">baby</span> <span word="or">or</span> <span word="anticipating">anticipating</span> <span word="the">the</span> <span word="child">child</span>’<span word="s">s</span> <span word="needs">needs</span>.</p><p><span word="Parts">Parts</span> <span word="of">of</span> <span word="the">the</span> <span word="brain">brain</span> <span word="where">where</span> <span word="grey">grey</span> <span word="matter">matter</span> <span word="had">had</span> <span word="been">been</span> <span word="pruned">pruned</span> <span word="lit">lit</span> <span word="up">up</span> <span word="on">on</span> <span word="MRI">MRI</span> <span word="scans">scans</span> <span word="when">when</span> <span word="mothers">mothers</span> <span word="saw">saw</span> <span word="pictures">pictures</span> <span word="of">of</span> <span word="their">their</span> <span word="own">own</span> <span word="babies">babies</span>. <span word="The">The</span> <span word="brains">brains</span> <span word="of">of</span> <span word="first">first</span>-<span word="time">time</span> <span word="fathers">fathers</span> <span word="did">did</span> <span word="not">not</span> <span word="show">show</span> <span word="such">such</span> <span word="changes">changes</span> <span word="in">in</span> <span word="structure">structure</span>.</p>
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