科学家研究发现鸽子脑内有与生俱来的空间图
<p></p><p>蓝箭头指示喂食鸽房的方向，红箭头指示鸽房方向，白点为放飞地点。黄色表示饥饿鸽子的飞行路线，黑色表示喂过食鸽子的飞行路线。</p><p><span word="The">The</span> <span word="mystery">mystery</span> <span word="of">of</span> <span word="how">how</span> <span word="a">a</span> <span word="pigeon">pigeon</span> <span word="can">can</span> <span word="always">always</span> <span word="find">find</span> <span word="its">its</span> <span word="way">way</span> <span word="back">back</span> <span word="home">home</span> <span word="has">has</span> <span word="finally">finally</span> <span word="been">been</span> <span word="solved">solved</span>.</p><p><span word="Scientists">Scientists</span> <span word="believe">believe</span> <span word="that">that</span> <span word="pigeons">pigeons</span> <span word="have">have</span> <span word="a">a</span> <span word="spatial">spatial</span> <span word="map">map</span> <span word="that">that</span> <span word="allows">allows</span> <span word="them">them</span> <span word="to">to</span> <span word="fly">fly</span> <span word="in">in</span> <span word="an">an</span> <span word="unfamiliar">unfamiliar</span> <span word="territory">territory</span> <span word="and">and</span> <span word="know">know</span> <span word="exactly">exactly</span> <span word="where">where</span> <span word="they">they</span> <span word="are">are</span> <span word="going">going</span>.</p><p><span word="The">The</span> <span word="finding">finding</span> <span word="replaces">replaces</span> <span word="the">the</span> <span word="current">current</span> <span word="theory">theory</span> <span word="that">that</span> <span word="pigeons">pigeons</span> <span word="compare">compare</span> <span word="the">the</span> <span word="coordinates">coordinates</span> <span word="of">of</span> <span word="their">their</span> <span word="location">location</span> <span word="with">with</span> <span word="those">those</span> <span word="of">of</span> <span word="the">the</span> <span word="home">home</span> <span word="loft">loft</span> <span word="and">and</span> <span word="then">then</span> <span word="systematically">systematically</span> <span word="reduce">reduce</span> <span word="the">the</span> <span word="difference">difference</span> <span word="between">between</span> <span word="the">the</span> <span word="two">two</span> <span word="to">to</span> <span word="find">find</span> <span word="their">their</span> <span word="way">way</span> <span word="home">home</span>.</p><p><span word="This">This</span> <span word="earlier">earlier</span> <span word="theory">theory</span> <span word="likens">likens</span> <span word="the">the</span> <span word="navigation">navigation</span> <span word="of">of</span> <span word="pigeons">pigeons</span> <span word="to">to</span> <span word="that">that</span> <span word="of">of</span> <span word="flying">flying</span> <span word="robots">robots</span>.</p><p><span word="But">But</span> <span word="experiments">experiments</span> <span word="carried">carried</span> <span word="out">out</span> <span word="at">at</span> <span word="the">the</span> <span word="University">University</span> <span word="of">of</span> <span word="Zurich">Zurich</span> <span word="have">have</span> <span word="shown">shown</span> <span word="that">that</span> <span word="pigeons">pigeons</span> <span word="possess">possess</span> <span word="cognitive">cognitive</span> <span word="capabilities">capabilities</span>.</p><p><span word="In">In</span> <span word="unknown">unknown</span> <span word="areas">areas</span>, <span word="the">the</span> <span word="scientists">scientists</span> <span word="claim">claim</span> <span word="pigeons">pigeons</span> <span word="recognise">recognise</span> <span word="where">where</span> <span word="they">they</span> <span word="are">are</span> <span word="in">in</span> <span word="relation">relation</span> <span word="to">to</span> <span word="their">their</span> <span word="home">home</span> <span word="loft">loft</span> <span word="and">and</span> <span word="are">are</span> <span word="able">able</span> <span word="to">to</span> <span word="choose">choose</span> <span word="their">their</span> <span word="targets">targets</span> <span word="themselves">themselves</span>.</p><p><span word="Homing">Homing</span> <span word="pigeons">pigeons</span> <span word="and">and</span> <span word="migratory">migratory</span> <span word="birds">birds</span> <span word="determine">determine</span> <span word="their">their</span> <span word="flight">flight</span> <span word="direction">direction</span> <span word="with">with</span> <span word="the">the</span> <span word="help">help</span> <span word="of">of</span> <span word="the">the</span> <span word="Earth">Earth</span>’<span word="s">s</span> <span word="magnetic">magnetic</span> <span word="field">field</span>, <span word="the">the</span> <span word="stars">stars</span> <span word="and">and</span> <span word="the">the</span> <span word="position">position</span> <span word="of">of</span> <span word="the">the</span> <span word="sun">sun</span>.</p><p><span word="Nicole">Nicole</span> <span word="Blaser">Blaser</span>, <span word="a">a</span> <span word="doctoral">doctoral</span> <span word="student">student</span> <span word="in">in</span> <span word="biology">biology</span> <span word="at">at</span> <span word="the">the</span> <span word="University">University</span> <span word="of">of</span> <span word="Zurich">Zurich</span> <span word="proposed">proposed</span> <span word="the">the</span> <span word="theory">theory</span> <span word="that">that</span> <span word="pigeons">pigeons</span> <span word="have">have</span> <span word="a">a</span> <span word="spatial">spatial</span> <span word="understanding">understanding</span> <span word="and">and</span> <span word="knowledge">knowledge</span> <span word="of">of</span> <span word="their">their</span> <span word="position">position</span> <span word="in">in</span> <span word="space">space</span> <span word="relative">relative</span> <span word="to">to</span> <span word="their">their</span> <span word="home">home</span> <span word="loft">loft</span>.</p><p><span word="This">This</span> <span word="theory">theory</span> <span word="presupposes">presupposes</span> <span word="a">a</span> <span word="type">type</span> <span word="of">of</span> <span word="mental">mental</span> <span word="map">map</span> <span word="in">in</span> <span word="their">their</span> <span word="brain">brain</span> <span word="and">and</span> <span word="thus">thus</span> <span word="cognitive">cognitive</span> <span word="capabilities">capabilities</span>. <span word="Up">Up</span> <span word="until">until</span> <span word="now">now</span>, <span word="there">there</span> <span word="has">has</span> <span word="not">not</span> <span word="been">been</span> <span word="any">any</span> <span word="clear">clear</span> <span word="evidence">evidence</span> <span word="to">to</span> <span word="support">support</span> <span word="this">this</span>.</p>
页:
[1]