Mystery of Chameleon Eyes Solved
<p><span word="Chameleons">Chameleons</span> <span word="can">can</span> <span word="move">move</span> <span word="their">their</span> <span word="eyes">eyes</span> <span word="in">in</span> <span word="different">different</span> <span word="directions">directions</span>, <span word="and">and</span> <span word="most">most</span> <span word="scientists">scientists</span> <span word="thought">thought</span> <span word="that">that</span> <span word="meant">meant</span> <span word="that">that</span> <span word="each">each</span> <span word="eye">eye</span> <span word="worked">worked</span> <span word="independently">independently</span> <span word="from">from</span> <span word="the">the</span> <span word="other">other</span>. <span word="Scientists">Scientists</span> <span word="in">in</span> <span word="Israel">Israel</span> <span word="say">say</span> <span word="they">they</span> <span word="have">have</span> <span word="discovered">discovered</span>, <span word="however">however</span>, <span word="that">that</span> <span word="chameleons">chameleons</span>' <span word="eyes">eyes</span> <span word="are">are</span>, <span word="in">in</span> <span word="fact">fact</span>, <span word="highly">highly</span> <span word="coordinated">coordinated</span>.</p><p><span word="Many">Many</span> <span word="fish">fish</span> <span word="and">and</span> <span word="birds">birds</span> <span word="have">have</span> <span word="eyes">eyes</span> <span word="on">on</span> <span word="opposite">opposite</span> <span word="sides">sides</span> <span word="of">of</span> <span word="the">the</span> <span word="head">head</span>, <span word="and">and</span> <span word="they">they</span> <span word="seemingly">seemingly</span> <span word="have">have</span> <span word="at">at</span> <span word="any">any</span> <span word="given">given</span> <span word="moment">moment</span> <span word="two">two</span> <span word="different">different</span> <span word="pictures">pictures</span> <span word="of">of</span> <span word="the">the</span> <span word="world">world</span> <span word="around">around</span> <span word="them">them</span>. <span word="But">But</span> <span word="chameleons">chameleons</span>' <span word="eyes">eyes</span> <span word="are">are</span> <span word="slightly">slightly</span> <span word="bulging">bulging</span> <span word="so">so</span> <span word="they">they</span> <span word="can">can</span> <span word="focus">focus</span> <span word="both">both</span> <span word="eyes">eyes</span> <span word="on">on</span> <span word="one">one</span> <span word="object">object</span> <span word="or">or</span> <span word="track">track</span> <span word="two">two</span> <span word="different">different</span> <span word="objects">objects</span> <span word="with">with</span> <span word="each">each</span> <span word="eye">eye</span>.</p><p><span word="The">The</span> <span word="puzzling">puzzling</span> <span word="question">question</span> <span word="was">was</span>: <span word="does">does</span> <span word="one">one</span> <span word="eye">eye</span> <span word="know">know</span> <span word="what">what</span> <span word="the">the</span> <span word="other">other</span> <span word="is">is</span> <span word="doing">doing</span>?</p><p><span word="Scientists">Scientists</span> <span word="at">at</span> <span word="Haifa">Haifa</span> <span word="University">University</span>, <span word="in">in</span> <span word="Israel">Israel</span>, <span word="tried">tried</span> <span word="to">to</span> <span word="find">find</span> <span word="the">the</span> <span word="answer">answer</span> <span word="with">with</span> <span word="the">the</span> <span word="help">help</span> <span word="of">of</span> <span word="a">a</span> <span word="computer">computer</span> <span word="screen">screen</span>.</p><p>"<span word="We">We</span> <span word="found">found</span> <span word="out">out</span> <span word="that">that</span> <span word="each">each</span> <span word="eye">eye</span> <span word="has">has</span> <span word="a">a</span> <span word="different">different</span> <span word="role">role</span>. <span word="We">We</span> <span word="have">have</span> <span word="the">the</span> <span word="tracking">tracking</span> <span word="eye">eye</span>, <span word="that">that</span> <span word="will">will</span> <span word="continue">continue</span> <span word="tracking">tracking</span> <span word="the">the</span> <span word="target">target</span>, <span word="and">and</span> <span word="the">the</span> <span word="converging">converging</span> <span word="eye">eye</span> <span word="that">that</span> <span word="will">will</span> <span word="converge">converge</span> <span word="to">to</span> <span word="the">the</span> <span word="tracking">tracking</span> <span word="eye">eye</span>, <span word="and">and</span> <span word="eventually">eventually</span> <span word="she">she</span> <span word="will">will</span> <span word="choose">choose</span> <span word="that">that</span> <span word="target">target</span>," <span word="said">said</span> <span word="Hadas">Hadas</span> <span word="Ketter">Ketter</span>-<span word="Katz">Katz</span>, <span word="who">who</span> <span word="is">is</span> <span word="a">a</span> <span word="scientist">scientist</span> <span word="at">at</span> <span word="the">the</span> <span word="university">university</span>. "<span word="We">We</span> <span word="found">found</span> <span word="out">out</span> <span word="that">that</span> <span word="each">each</span> <span word="eye">eye</span> <span word="has">has</span> <span word="a">a</span> <span word="different">different</span> <span word="subtle">subtle</span> <span word="pattern">pattern</span> <span word="of">of</span> <span word="eye">eye</span> <span word="movements">movements</span> <span word="according">according</span> <span word="to">to</span> <span word="her">her</span> <span word="role">role</span>."</p><p><span word="Split">Split</span> <span word="screen">screen</span></p><p><span word="When">When</span> <span word="the">the</span> <span word="picture">picture</span> <span word="of">of</span> <span word="an">an</span> <span word="insect">insect</span> <span word="projected">projected</span> <span word="on">on</span> <span word="the">the</span> <span word="screen">screen</span> <span word="was">was</span> <span word="split">split</span> <span word="in">in</span> <span word="two">two</span>, <span word="which">which</span> <span word="then">then</span> <span word="started">started</span> <span word="to">to</span> <span word="move">move</span> <span word="in">in</span> <span word="opposite">opposite</span> <span word="directions">directions</span>, <span word="the">the</span> <span word="chameleon">chameleon</span> <span word="was">was</span> <span word="able">able</span> <span word="to">to</span> <span word="follow">follow</span> <span word="both">both</span>.</p><p> <span word="But">But</span> <span word="when">when</span> <span word="the">the</span> <span word="animal">animal</span> <span word="finally">finally</span> <span word="decided">decided</span> <span word="on">on</span> <span word="one">one</span> <span word="of">of</span> <span word="the">the</span> <span word="targets">targets</span>, <span word="its">its</span> <span word="other">other</span> <span word="eye">eye</span> <span word="suddenly">suddenly</span> <span word="swiveled">swiveled</span> <span word="back">back</span> <span word="to">to</span> <span word="focus">focus</span> <span word="on">on</span> <span word="the">the</span> <span word="same">same</span> <span word="spot">spot</span>. <span word="In">In</span> <span word="a">a</span> <span word="split">split</span> <span word="second">second</span>, <span word="it">it</span> <span word="lashed">lashed</span> <span word="out">out</span> <span word="its">its</span> <span word="long">long</span> <span word="tongue">tongue</span> <span word="at">at</span> <span word="the">the</span> <span word="target">target</span>. <span word="This">This</span> <span word="proved">proved</span> <span word="that">that</span> <span word="the">the</span> <span word="second">second</span> <span word="eye">eye</span> <span word="knew">knew</span> <span word="what">what</span> <span word="the">the</span> <span word="first">first</span> <span word="eye">eye</span> <span word="was">was</span> <span word="seeing">seeing</span>.</p>
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