研究:电流刺激大脑可增强学习能力
<p><span word="Electrically">Electrically</span> <span word="stimulating">stimulating</span> <span word="the">the</span> <span word="brain">brain</span> <span word="can">can</span> <span word="help">help</span> <span word="to">to</span> <span word="speed">speed</span> <span word="up">up</span> <span word="the">the</span> <span word="process">process</span> <span word="of">of</span> <span word="learning">learning</span>, <span word="scientists">scientists</span> <span word="have">have</span> <span word="shown">shown</span>。</p><p><span word="Applying">Applying</span> <span word="a">a</span> <span word="small">small</span> <span word="current">current</span> <span word="to">to</span> <span word="specific">specific</span> <span word="parts">parts</span> <span word="of">of</span> <span word="the">the</span> <span word="brain">brain</span> <span word="can">can</span> <span word="increase">increase</span> <span word="its">its</span> <span word="activity">activity</span>, <span word="making">making</span> <span word="learning">learning</span> <span word="easier">easier</span>。</p><p><span word="Researchers">Researchers</span> <span word="from">from</span> <span word="the">the</span> <span word="University">University</span> <span word="of">of</span> <span word="Oxford">Oxford</span> <span word="have">have</span> <span word="studied">studied</span> <span word="the">the</span> <span word="changing">changing</span> <span word="structure">structure</span> <span word="of">of</span> <span word="the">the</span> <span word="brain">brain</span> <span word="in">in</span> <span word="stroke">stroke</span> <span word="patients">patients</span> <span word="and">and</span> <span word="in">in</span> <span word="healthy">healthy</span> <span word="adults">adults</span>。</p><p><span word="Prof">Prof</span> <span word="Heidi">Heidi</span> <span word="Johansen">Johansen</span>-<span word="Berg">Berg</span> <span word="presented">presented</span> <span word="their">their</span> <span word="findings">findings</span> <span word="at">at</span> <span word="the">the</span> <span word="British">British</span> <span word="Science">Science</span> <span word="Festival">Festival</span> <span word="in">in</span> <span word="Bradford">Bradford</span>。</p><p><span word="The">The</span> <span word="team">team</span> <span word="at">at</span> <span word="Oxford">Oxford</span> <span word="has">has</span> <span word="been">been</span> <span word="conducting">conducting</span> <span word="research">research</span> <span word="into">into</span> <span word="how">how</span> <span word="the">the</span> <span word="structure">structure</span> <span word="of">of</span> <span word="the">the</span> <span word="brain">brain</span> <span word="changes">changes</span> <span word="in">in</span> <span word="adulthood">adulthood</span>, <span word="and">and</span> <span word="in">in</span> <span word="particular">particular</span> <span word="what">what</span> <span word="changes">changes</span> <span word="occur">occur</span> <span word="after">after</span> <span word="a">a</span> <span word="stroke">stroke</span>。</p><p><span word="They">They</span> <span word="have">have</span> <span word="used">used</span> <span word="an">an</span> <span word="approach">approach</span> <span word="called">called</span> <span word="functional">functional</span> <span word="MRI">MRI</span> <span word="to">to</span> <span word="monitor">monitor</span> <span word="activity">activity</span> <span word="in">in</span> <span word="the">the</span> <span word="brain">brain</span> <span word="as">as</span> <span word="stroke">stroke</span> <span word="patients">patients</span> <span word="re">re</span>-<span word="learn">learn</span> <span word="motor">motor</span> <span word="skills">skills</span> <span word="that">that</span> <span word="were">were</span> <span word="lost">lost</span> <span word="as">as</span> <span word="a">a</span> <span word="result">result</span> <span word="of">of</span> <span word="their">their</span> <span word="illness">illness</span>。</p><p><span word="One">One</span> <span word="of">of</span> <span word="the">the</span> <span word="major">major</span> <span word="findings">findings</span> <span word="is">is</span> <span word="that">that</span> <span word="the">the</span> <span word="brain">brain</span> <span word="is">is</span> <span word="very">very</span> <span word="flexible">flexible</span> <span word="and">and</span> <span word="can">can</span> <span word="restructure">restructure</span> <span word="itself">itself</span>, <span word="growing">growing</span> <span word="new">new</span> <span word="connections">connections</span> <span word="and">and</span> <span word="reassigning">reassigning</span> <span word="tasks">tasks</span> <span word="to">to</span> <span word="different">different</span> <span word="areas">areas</span>, <span word="when">when</span> <span word="damage">damage</span> <span word="occurs">occurs</span> <span word="or">or</span> <span word="a">a</span> <span word="specific">specific</span> <span word="task">task</span> <span word="is">is</span> <span word="practised">practised</span>。</p><p><span word="As">As</span> <span word="part">part</span> <span word="of">of</span> <span word="this">this</span> <span word="research">research</span>, <span word="they">they</span> <span word="investigated">investigated</span> <span word="the">the</span> <span word="possibility">possibility</span> <span word="of">of</span> <span word="using">using</span> <span word="non">non</span>-<span word="invasive">invasive</span> <span word="electric">electric</span> <span word="brain">brain</span> <span word="stimulation">stimulation</span> <span word="to">to</span> <span word="improve">improve</span> <span word="the">the</span> <span word="recovery">recovery</span> <span word="of">of</span> <span word="these">these</span> <span word="motor">motor</span> <span word="skills">skills</span>; <span word="the">the</span> <span word="short">short</span>-<span word="term">term</span> <span word="improvement">improvement</span> <span word="in">in</span> <span word="stroke">stroke</span> <span word="patients">patients</span> <span word="had">had</span> <span word="already">already</span> <span word="been">been</span> <span word="noted">noted</span>。</p><p><span word="But">But</span> <span word="an">an</span> <span word="unexpected">unexpected</span> <span word="result">result</span> <span word="was">was</span> <span word="found">found</span> <span word="when">when</span> <span word="the">the</span> <span word="same">same</span> <span word="brain">brain</span> <span word="stimulation">stimulation</span> <span word="was">was</span> <span word="applied">applied</span> <span word="to">to</span> <span word="healthy">healthy</span> <span word="adults">adults</span>: <span word="their">their</span> <span word="speed">speed</span> <span word="of">of</span> <span word="learning">learning</span> <span word="was">was</span> <span word="also">also</span> <span word="significantly">significantly</span> <span word="increased">increased</span>。</p><p><span word="To">To</span> <span word="observe">observe</span> <span word="this">this</span> <span word="effect">effect</span>, <span word="the">the</span> <span word="team">team</span> <span word="devised">devised</span> <span word="an">an</span> <span word="experiment">experiment</span> <span word="whereby">whereby</span> <span word="volunteers">volunteers</span> <span word="memorised">memorised</span> <span word="a">a</span> <span word="sequence">sequence</span> <span word="of">of</span> <span word="buttons">buttons</span> <span word="to">to</span> <span word="press">press</span> "<span word="like">like</span> <span word="playing">playing</span> <span word="a">a</span> <span word="tune">tune</span> <span word="on">on</span> <span word="a">a</span> <span word="piano">piano</span>"。</p>
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