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Goodlooksthevideo-gamesindustryisdiscoveringwillgetyouonlysofar.Thegraphicsonamoderngamemayfaroutstripthepixellatedblobsofthe1980sbutthereismoretoagoodgamethaneyecandy.Photo-realisticgraphicsmakethelackofauthenticityofotheraspectsofgameplaymoreapparent.Itisnotenoughforgamecharacterstolookbetter—theirbehaviourmustalsobemoresophisticatedsayresearchersworkingattheinterfacebetweengamingandartificialintelligenceAI. Today’sgamesmaylookbetterbutthegameplayis"basicallythesame"asitwasafewyearsagosaysMichaelMateasthefounderoftheExperimentalGameLabattheGeorgiaInstituteofTechnology.AIhesuggestsoffersan"untappedfrontier"ofnewpossibilities."Wearetoppingoutonthegraphicssowhat’sgoingtobethenextthingthatimprovesgame-play"asksJohnLairddirectoroftheAIlabattheUniversityofMichigan.ImprovedAIisabigpartoftheanswerhesays.Thoseintheindustryagree.Thehigh-definitiongraphicspossibleonnext-generationgamesconsolessuchasMicrosoft’sXbox360areraisingexpectationsacrosstheboardsaysNeilYoungofElectronicArtstheworld’sbiggestgamespublisher."Youhavetohavehigh-resolutionmodelswhichrequireshigh-resolutionanimation"hesays"sonowIexpecthigh-resolutionbehaviour." RepresentativesfromindustryandacademiawillconvergeinMarinadelReyCalifornialaterthismonthforthesecondannualArtificialIntelligenceandInteractiveDigitalEntertainmentAIIDEconference.TheaimsaysDrLairdwhowillchairtheeventistoincreasethetrafficofpeopleandideasbetweenthetwospheres."GameshavebeenveryimportanttoAIthroughtheyears"henotes.AlanTuringoneofthepioneersofcomputinginthe1940swroteasimplechess-playingprogrambeforetherewereanycomputerstoruniton;healsoproposedtheTuringtestaquestion-and-answergamethatisayardstickformachineintelligence.EvensoAIresearchandvideogamesexistedinseparateworldsuntilrecently.TheAItechniquesusedingameswereverysimplisticfromanacademicperspectivesaysDr.MateaswhileAIresearcherswereinturncluelessaboutmoderngames.Buthesays"bothsidesarelearningandarenowmuchcloser." Considerforexamplethesoftwarethatcontrolsanenemyinafirst-personshooterFPS—agameinwhichtheplayerviewstheworldalongthebarrelofagun.Thebehaviourofenemiesusedtobepre-scripted:waituntiltheplayerisnearbypopupfrombehindaboxfireweaponandthenrollandhidebehindanotherboxforexample.Butsomegamesnowusefarmoreadvanced"planningsystems"importedfromacademia."Insteadofscriptsandhand-codedbehaviourtheAImonstersinanFPScanreasonfromfirstprinciples"saysDr.Mateas.Theycanforexampleworkoutwhethertheplayercanseethemornotseekoutcoverwheninjuredandsoon."Ratherthanjustmovingbetweenpredefinedspotsthecharactersinawargamecandynamicallyshiftdependingonwhat’shappening"saysFionaSperryofElectronicArts. Iftheindustryisborrowingideasfromacademiatheoppositeisalsotrue.Commercialgamessuchas"UnrealTournament"whichcanbeeasilymodifiedorscriptedarebeingadoptedasresearchtoolsinuniversitiessaysDr.Laird.Suchtoolsprovideflexibleenvironmentsforexperimentsandalsomeanthatstudentsendupwithtransferableskills. ButthegreatestpotentialliesincombiningresearchwithgamedevelopmentarguesDr.Mateas."Onlybywrestlingwithrealcontentarethetechnicalproblemsrevealedandonlybywrestlingwithtechnologydoesitgiveyouinsightintowhatnewkindsofcontentarepossible"hesays. ThelastsentencesonowIexpecthigh-resolutionbehaviorinthesecondparagraphmostprobablymeans
SomeoftheconcernssurroundingTurkey’sapplicationtojointheEuropeanUniontobe1onbytheEU’sCouncilofMinistersonDecember17thareeconomic—inparticularthecountry’srelativepoverty.ItsGDPperheadislessthanathirdoftheaverageforthe15pre-2004membersoftheEU.2itisnotfaroffthatofLatvia—oneofthetennewmemberswhich3onMay1st2004anditismuchthesameas4oftwocountriesBulgariaandRomaniawhichthisweekconcluded5talkswiththeEUthatcouldmakethemfullmembersonJanuary1st2007. 6thecountry’srecenteconomicprogresshasbeenaccordingtoDonaldJohnstonthesecretary-generaloftheOECDstunning.GDPinthesecondquarteroftheyearwas13.4%higherthanayearearliera7ofgrowththatnoEUcountrycomescloseto8.Turkey’s9ratehasjustfallenintosinglefiguresforthefirsttimesince1972andthisweekthecountry10agreementwiththeIMFonanewthree-year＄10billioneconomicprogramthatwillhelpTurkey11inflationtowardEuropeanlevelsandenhancetheeconomy’sresilience. Resiliencehasnothistoricallybeenthecountry’seconomicstrongpoint.12throughoutthe1990sgrowthoscillatedlikeanelectrocardiogram13aviolentheartattack.This14hasbeenoneofthemainreasonswhythecountryhasfaileddismallytoattackmuch-neededforeigndirectinvestment.Itsstockofsuchinvestmentislowernowthanitwasinthe1980sandannual15havescarcelyeverreached＄1billion. Onedeterrenttoforeigninvestorsisdueto16onJanuary1st2005.OnthatdayTurkeywilltakeawaytherightofvirtuallyeveryoneofitscitizenstocallthemselvesamillionaire.Sixzeroswillberemovedfromthefacevalueofthelira里拉土耳其货币单位;oneunitofthelocal17willhenceforthbeworthwhatlmillionarenow—ieabout0.530.53欧元.Goodswillhavetobe18inboththenewandoldliraforthewholeoftheyear19foreignbankersand20canbegintolookforwardtoatimeinTurkeywhentheywillnolongerhavetojugglementallywithindeterminatestringsofzeros Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.17
Addictionissuchaharmfulbehaviorinfactthatevolutionshouldhavelongagoweededitoutofthepopulation:ifit’shardtodrivesafelyundertheinfluenceimaginetryingtorunfromasaber-toothedtigerorcatchasquirrelforlunch.AndyetsaysDr.NoraVolkowdirectorofNIDAandapioneerintheuseofimagingtounderstandaddiction"theuseofdrugshasbeenrecordedsincethebeginningofcivilization.Humansinmyviewwillalwayswanttoexperimentwiththingstomakethemfeelgood." That’sbecausedrugsofabuseco-opttheverybrainfunctionsthatallowedourdistantancestorstosurviveinahostileworld.Ourmindsareprogrammedtopayextraattentiontowhatneurologistscallsalience—thatisspecialrelevance.Threatsforexamplearehighlysalientwhichiswhyweinstinctivelytrytogetawayfromthem.Butsoarefoodandsexbecausetheyhelptheindividualandthespeciessurvive.Drugsofabusecapitalizeonthisready-madeprogramming.Whenexposedtodrugsourmemorysystemsrewardcircuitsdecisionmakingskillsandconditioningkickin—salienceinoverdrive—tocreateanallconsumingpatternofuncontrollablecraving."Somepeoplehaveageneticpredispositiontoaddiction"saysVolkow."Butbecauseitinvolvesthesebasicbrainfunctionseveryonewillbecomeanaddictifsufficientlyexposedtodrugsoralcohol." Thatcangofornonchemicaladdictionsaswell.Behaviorsfromgamblingtoshoppingtosexmaystartoutashabitsbutslideintoaddictions.Sometimestheremightbeabehavior-specificrootoftheproblem.Volkow’sresearchgroupforexamplehasshownthatpathologicallyobesepeoplewhoarecompulsiveeatersexhibithyperactivityintheareasofthebrainthatprocessfoodstimuli—includingthemouthlipsandtongue.Forthemactivatingtheseregionsislikeopeningthefloodgatestothepleasurecenter.Almostanythingdeeplyenjoyablecanturnintoanaddictionthough. Ofcoursenoteveryonebecomesanaddict.That’sbecausewehaveothermoreanalyticalregionsthatcanevaluateconsequencesandoverridemerepleasureseeking.Brainimagingisshowingexactlyhowthathappens.PaulusforexamplelookedatdrugaddictsenrolledinaVAhospital’sintensivefour-weekrehabilitationprogram.Thosewhoweremorelikelytorelapseinthefirstyearaftercompletingtheprogramwerealsolessabletocompletetasksinvolvingcognitiveskillsandlessabletoadjusttonewrulesquickly.Thissuggestedthatthosepatientsmightalsobelessadeptatusinganalyticalareasofthebrainwhileperformingdecision-makingtasks.Sureenoughbrainscansshowedthattherewerereducedlevelsofactivationintheprefrontalcortexwhererationalthoughtcanoverrideimpulsivebehavior.It’simpossibletosayifthedrugsmighthavedamagedtheseabilitiesintherelapsersaneffectratherthanacauseofthechemicalabuse—butthefactthatthecognitivedeficitexistedinonlysomeofthedruguserssuggeststhattherewassomethinginnatethatwasuniquetothem.TohissurprisePaulusfoundthat80%to90%ofthetimehecouldaccuratelypredict:whowouldrelapsewithinayearsimplybyexaminingthescans. Anotherareaoffocusforresearchersinvolvesthebrain’srewardsystempoweredlargelybytheneurotransmitterdopamine.Investigatorsarelookingspecificallyatthefamilyofdopaminereceptorsthatpopulatenervecellsandbindtothecompound.Thehopeisthatifyoucanreducetheeffectofthebrainchemicalthatcarriesthepleasurablesignalyoucanloosenthedrug’shold. Compulsiveeatersaretypicalexampleof
SomeoftheconcernssurroundingTurkey’sapplicationtojointheEuropeanUniontobe1onbytheEU’sCouncilofMinistersonDecember17thareeconomic—inparticularthecountry’srelativepoverty.ItsGDPperheadislessthanathirdoftheaverageforthe15pre-2004membersoftheEU.2itisnotfaroffthatofLatvia—oneofthetennewmemberswhich3onMay1st2004anditismuchthesameas4oftwocountriesBulgariaandRomaniawhichthisweekconcluded5talkswiththeEUthatcouldmakethemfullmembersonJanuary1st2007. 6thecountry’srecenteconomicprogresshasbeenaccordingtoDonaldJohnstonthesecretary-generaloftheOECDstunning.GDPinthesecondquarteroftheyearwas13.4%higherthanayearearliera7ofgrowththatnoEUcountrycomescloseto8.Turkey’s9ratehasjustfallenintosinglefiguresforthefirsttimesince1972andthisweekthecountry10agreementwiththeIMFonanewthree-year＄10billioneconomicprogramthatwillhelpTurkey11inflationtowardEuropeanlevelsandenhancetheeconomy’sresilience. Resiliencehasnothistoricallybeenthecountry’seconomicstrongpoint.12throughoutthe1990sgrowthoscillatedlikeanelectrocardiogram13aviolentheartattack.This14hasbeenoneofthemainreasonswhythecountryhasfaileddismallytoattackmuch-neededforeigndirectinvestment.Itsstockofsuchinvestmentislowernowthanitwasinthe1980sandannual15havescarcelyeverreached＄1billion. Onedeterrenttoforeigninvestorsisdueto16onJanuary1st2005.OnthatdayTurkeywilltakeawaytherightofvirtuallyeveryoneofitscitizenstocallthemselvesamillionaire.Sixzeroswillberemovedfromthefacevalueofthelira里拉土耳其货币单位;oneunitofthelocal17willhenceforthbeworthwhatlmillionarenow—ieabout0.530.53欧元.Goodswillhavetobe18inboththenewandoldliraforthewholeoftheyear19foreignbankersand20canbegintolookforwardtoatimeinTurkeywhentheywillnolongerhavetojugglementallywithindeterminatestringsofzeros Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.3
SomeoftheconcernssurroundingTurkey’sapplicationtojointheEuropeanUniontobe1onbytheEU’sCouncilofMinistersonDecember17thareeconomic—inparticularthecountry’srelativepoverty.ItsGDPperheadislessthanathirdoftheaverageforthe15pre-2004membersoftheEU.2itisnotfaroffthatofLatvia—oneofthetennewmemberswhich3onMay1st2004anditismuchthesameas4oftwocountriesBulgariaandRomaniawhichthisweekconcluded5talkswiththeEUthatcouldmakethemfullmembersonJanuary1st2007. 6thecountry’srecenteconomicprogresshasbeenaccordingtoDonaldJohnstonthesecretary-generaloftheOECDstunning.GDPinthesecondquarteroftheyearwas13.4%higherthanayearearliera7ofgrowththatnoEUcountrycomescloseto8.Turkey’s9ratehasjustfallenintosinglefiguresforthefirsttimesince1972andthisweekthecountry10agreementwiththeIMFonanewthree-year＄10billioneconomicprogramthatwillhelpTurkey11inflationtowardEuropeanlevelsandenhancetheeconomy’sresilience. Resiliencehasnothistoricallybeenthecountry’seconomicstrongpoint.12throughoutthe1990sgrowthoscillatedlikeanelectrocardiogram13aviolentheartattack.This14hasbeenoneofthemainreasonswhythecountryhasfaileddismallytoattackmuch-neededforeigndirectinvestment.Itsstockofsuchinvestmentislowernowthanitwasinthe1980sandannual15havescarcelyeverreached＄1billion. Onedeterrenttoforeigninvestorsisdueto16onJanuary1st2005.OnthatdayTurkeywilltakeawaytherightofvirtuallyeveryoneofitscitizenstocallthemselvesamillionaire.Sixzeroswillberemovedfromthefacevalueofthelira里拉土耳其货币单位;oneunitofthelocal17willhenceforthbeworthwhatlmillionarenow—ieabout0.530.53欧元.Goodswillhavetobe18inboththenewandoldliraforthewholeoftheyear19foreignbankersand20canbegintolookforwardtoatimeinTurkeywhentheywillnolongerhavetojugglementallywithindeterminatestringsofzeros Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.1
SomeoftheconcernssurroundingTurkey’sapplicationtojointheEuropeanUniontobe1onbytheEU’sCouncilofMinistersonDecember17thareeconomic—inparticularthecountry’srelativepoverty.ItsGDPperheadislessthanathirdoftheaverageforthe15pre-2004membersoftheEU.2itisnotfaroffthatofLatvia—oneofthetennewmemberswhich3onMay1st2004anditismuchthesameas4oftwocountriesBulgariaandRomaniawhichthisweekconcluded5talkswiththeEUthatcouldmakethemfullmembersonJanuary1st2007. 6thecountry’srecenteconomicprogresshasbeenaccordingtoDonaldJohnstonthesecretary-generaloftheOECDstunning.GDPinthesecondquarteroftheyearwas13.4%higherthanayearearliera7ofgrowththatnoEUcountrycomescloseto8.Turkey’s9ratehasjustfallenintosinglefiguresforthefirsttimesince1972andthisweekthecountry10agreementwiththeIMFonanewthree-year＄10billioneconomicprogramthatwillhelpTurkey11inflationtowardEuropeanlevelsandenhancetheeconomy’sresilience. Resiliencehasnothistoricallybeenthecountry’seconomicstrongpoint.12throughoutthe1990sgrowthoscillatedlikeanelectrocardiogram13aviolentheartattack.This14hasbeenoneofthemainreasonswhythecountryhasfaileddismallytoattackmuch-neededforeigndirectinvestment.Itsstockofsuchinvestmentislowernowthanitwasinthe1980sandannual15havescarcelyeverreached＄1billion. Onedeterrenttoforeigninvestorsisdueto16onJanuary1st2005.OnthatdayTurkeywilltakeawaytherightofvirtuallyeveryoneofitscitizenstocallthemselvesamillionaire.Sixzeroswillberemovedfromthefacevalueofthelira里拉土耳其货币单位;oneunitofthelocal17willhenceforthbeworthwhatlmillionarenow—ieabout0.530.53欧元.Goodswillhavetobe18inboththenewandoldliraforthewholeoftheyear19foreignbankersand20canbegintolookforwardtoatimeinTurkeywhentheywillnolongerhavetojugglementallywithindeterminatestringsofzeros Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.11
Goodlooksthevideo-gamesindustryisdiscoveringwillgetyouonlysofar.Thegraphicsonamoderngamemayfaroutstripthepixellatedblobsofthe1980sbutthereismoretoagoodgamethaneyecandy.Photo-realisticgraphicsmakethelackofauthenticityofotheraspectsofgameplaymoreapparent.Itisnotenoughforgamecharacterstolookbetter—theirbehaviourmustalsobemoresophisticatedsayresearchersworkingattheinterfacebetweengamingandartificialintelligenceAI. Today’sgamesmaylookbetterbutthegameplayis"basicallythesame"asitwasafewyearsagosaysMichaelMateasthefounderoftheExperimentalGameLabattheGeorgiaInstituteofTechnology.AIhesuggestsoffersan"untappedfrontier"ofnewpossibilities."Wearetoppingoutonthegraphicssowhat’sgoingtobethenextthingthatimprovesgame-play"asksJohnLairddirectoroftheAIlabattheUniversityofMichigan.ImprovedAIisabigpartoftheanswerhesays.Thoseintheindustryagree.Thehigh-definitiongraphicspossibleonnext-generationgamesconsolessuchasMicrosoft’sXbox360areraisingexpectationsacrosstheboardsaysNeilYoungofElectronicArtstheworld’sbiggestgamespublisher."Youhavetohavehigh-resolutionmodelswhichrequireshigh-resolutionanimation"hesays"sonowIexpecthigh-resolutionbehaviour." RepresentativesfromindustryandacademiawillconvergeinMarinadelReyCalifornialaterthismonthforthesecondannualArtificialIntelligenceandInteractiveDigitalEntertainmentAIIDEconference.TheaimsaysDrLairdwhowillchairtheeventistoincreasethetrafficofpeopleandideasbetweenthetwospheres."GameshavebeenveryimportanttoAIthroughtheyears"henotes.AlanTuringoneofthepioneersofcomputinginthe1940swroteasimplechess-playingprogrambeforetherewereanycomputerstoruniton;healsoproposedtheTuringtestaquestion-and-answergamethatisayardstickformachineintelligence.EvensoAIresearchandvideogamesexistedinseparateworldsuntilrecently.TheAItechniquesusedingameswereverysimplisticfromanacademicperspectivesaysDr.MateaswhileAIresearcherswereinturncluelessaboutmoderngames.Buthesays"bothsidesarelearningandarenowmuchcloser." Considerforexamplethesoftwarethatcontrolsanenemyinafirst-personshooterFPS—agameinwhichtheplayerviewstheworldalongthebarrelofagun.Thebehaviourofenemiesusedtobepre-scripted:waituntiltheplayerisnearbypopupfrombehindaboxfireweaponandthenrollandhidebehindanotherboxforexample.Butsomegamesnowusefarmoreadvanced"planningsystems"importedfromacademia."Insteadofscriptsandhand-codedbehaviourtheAImonstersinanFPScanreasonfromfirstprinciples"saysDr.Mateas.Theycanforexampleworkoutwhethertheplayercanseethemornotseekoutcoverwheninjuredandsoon."Ratherthanjustmovingbetweenpredefinedspotsthecharactersinawargamecandynamicallyshiftdependingonwhat’shappening"saysFionaSperryofElectronicArts. Iftheindustryisborrowingideasfromacademiatheoppositeisalsotrue.Commercialgamessuchas"UnrealTournament"whichcanbeeasilymodifiedorscriptedarebeingadoptedasresearchtoolsinuniversitiessaysDr.Laird.Suchtoolsprovideflexibleenvironmentsforexperimentsandalsomeanthatstudentsendupwithtransferableskills. ButthegreatestpotentialliesincombiningresearchwithgamedevelopmentarguesDr.Mateas."Onlybywrestlingwithrealcontentarethetechnicalproblemsrevealedandonlybywrestlingwithtechnologydoesitgiveyouinsightintowhatnewkindsofcontentarepossible"hesays. TheexampleofFPSisusedinthepassageto
SomeoftheconcernssurroundingTurkey’sapplicationtojointheEuropeanUniontobe1onbytheEU’sCouncilofMinistersonDecember17thareeconomic—inparticularthecountry’srelativepoverty.ItsGDPperheadislessthanathirdoftheaverageforthe15pre-2004membersoftheEU.2itisnotfaroffthatofLatvia—oneofthetennewmemberswhich3onMay1st2004anditismuchthesameas4oftwocountriesBulgariaandRomaniawhichthisweekconcluded5talkswiththeEUthatcouldmakethemfullmembersonJanuary1st2007. 6thecountry’srecenteconomicprogresshasbeenaccordingtoDonaldJohnstonthesecretary-generaloftheOECDstunning.GDPinthesecondquarteroftheyearwas13.4%higherthanayearearliera7ofgrowththatnoEUcountrycomescloseto8.Turkey’s9ratehasjustfallenintosinglefiguresforthefirsttimesince1972andthisweekthecountry10agreementwiththeIMFonanewthree-year＄10billioneconomicprogramthatwillhelpTurkey11inflationtowardEuropeanlevelsandenhancetheeconomy’sresilience. Resiliencehasnothistoricallybeenthecountry’seconomicstrongpoint.12throughoutthe1990sgrowthoscillatedlikeanelectrocardiogram13aviolentheartattack.This14hasbeenoneofthemainreasonswhythecountryhasfaileddismallytoattackmuch-neededforeigndirectinvestment.Itsstockofsuchinvestmentislowernowthanitwasinthe1980sandannual15havescarcelyeverreached＄1billion. Onedeterrenttoforeigninvestorsisdueto16onJanuary1st2005.OnthatdayTurkeywilltakeawaytherightofvirtuallyeveryoneofitscitizenstocallthemselvesamillionaire.Sixzeroswillberemovedfromthefacevalueofthelira里拉土耳其货币单位;oneunitofthelocal17willhenceforthbeworthwhatlmillionarenow—ieabout0.530.53欧元.Goodswillhavetobe18inboththenewandoldliraforthewholeoftheyear19foreignbankersand20canbegintolookforwardtoatimeinTurkeywhentheywillnolongerhavetojugglementallywithindeterminatestringsofzeros Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.9
Addictionissuchaharmfulbehaviorinfactthatevolutionshouldhavelongagoweededitoutofthepopulation:ifit’shardtodrivesafelyundertheinfluenceimaginetryingtorunfromasaber-toothedtigerorcatchasquirrelforlunch.AndyetsaysDr.NoraVolkowdirectorofNIDAandapioneerintheuseofimagingtounderstandaddiction"theuseofdrugshasbeenrecordedsincethebeginningofcivilization.Humansinmyviewwillalwayswanttoexperimentwiththingstomakethemfeelgood." That’sbecausedrugsofabuseco-opttheverybrainfunctionsthatallowedourdistantancestorstosurviveinahostileworld.Ourmindsareprogrammedtopayextraattentiontowhatneurologistscallsalience—thatisspecialrelevance.Threatsforexamplearehighlysalientwhichiswhyweinstinctivelytrytogetawayfromthem.Butsoarefoodandsexbecausetheyhelptheindividualandthespeciessurvive.Drugsofabusecapitalizeonthisready-madeprogramming.Whenexposedtodrugsourmemorysystemsrewardcircuitsdecisionmakingskillsandconditioningkickin—salienceinoverdrive—tocreateanallconsumingpatternofuncontrollablecraving."Somepeoplehaveageneticpredispositiontoaddiction"saysVolkow."Butbecauseitinvolvesthesebasicbrainfunctionseveryonewillbecomeanaddictifsufficientlyexposedtodrugsoralcohol." Thatcangofornonchemicaladdictionsaswell.Behaviorsfromgamblingtoshoppingtosexmaystartoutashabitsbutslideintoaddictions.Sometimestheremightbeabehavior-specificrootoftheproblem.Volkow’sresearchgroupforexamplehasshownthatpathologicallyobesepeoplewhoarecompulsiveeatersexhibithyperactivityintheareasofthebrainthatprocessfoodstimuli—includingthemouthlipsandtongue.Forthemactivatingtheseregionsislikeopeningthefloodgatestothepleasurecenter.Almostanythingdeeplyenjoyablecanturnintoanaddictionthough. Ofcoursenoteveryonebecomesanaddict.That’sbecausewehaveothermoreanalyticalregionsthatcanevaluateconsequencesandoverridemerepleasureseeking.Brainimagingisshowingexactlyhowthathappens.PaulusforexamplelookedatdrugaddictsenrolledinaVAhospital’sintensivefour-weekrehabilitationprogram.Thosewhoweremorelikelytorelapseinthefirstyearaftercompletingtheprogramwerealsolessabletocompletetasksinvolvingcognitiveskillsandlessabletoadjusttonewrulesquickly.Thissuggestedthatthosepatientsmightalsobelessadeptatusinganalyticalareasofthebrainwhileperformingdecision-makingtasks.Sureenoughbrainscansshowedthattherewerereducedlevelsofactivationintheprefrontalcortexwhererationalthoughtcanoverrideimpulsivebehavior.It’simpossibletosayifthedrugsmighthavedamagedtheseabilitiesintherelapsersaneffectratherthanacauseofthechemicalabuse—butthefactthatthecognitivedeficitexistedinonlysomeofthedruguserssuggeststhattherewassomethinginnatethatwasuniquetothem.TohissurprisePaulusfoundthat80%to90%ofthetimehecouldaccuratelypredict:whowouldrelapsewithinayearsimplybyexaminingthescans. Anotherareaoffocusforresearchersinvolvesthebrain’srewardsystempoweredlargelybytheneurotransmitterdopamine.Investigatorsarelookingspecificallyatthefamilyofdopaminereceptorsthatpopulatenervecellsandbindtothecompound.Thehopeisthatifyoucanreducetheeffectofthebrainchemicalthatcarriesthepleasurablesignalyoucanloosenthedrug’shold. AccordingtoDr.NoraVolkowtheuseofdrugs
SomeoftheconcernssurroundingTurkey’sapplicationtojointheEuropeanUniontobe1onbytheEU’sCouncilofMinistersonDecember17thareeconomic—inparticularthecountry’srelativepoverty.ItsGDPperheadislessthanathirdoftheaverageforthe15pre-2004membersoftheEU.2itisnotfaroffthatofLatvia—oneofthetennewmemberswhich3onMay1st2004anditismuchthesameas4oftwocountriesBulgariaandRomaniawhichthisweekconcluded5talkswiththeEUthatcouldmakethemfullmembersonJanuary1st2007. 6thecountry’srecenteconomicprogresshasbeenaccordingtoDonaldJohnstonthesecretary-generaloftheOECDstunning.GDPinthesecondquarteroftheyearwas13.4%higherthanayearearliera7ofgrowththatnoEUcountrycomescloseto8.Turkey’s9ratehasjustfallenintosinglefiguresforthefirsttimesince1972andthisweekthecountry10agreementwiththeIMFonanewthree-year＄10billioneconomicprogramthatwillhelpTurkey11inflationtowardEuropeanlevelsandenhancetheeconomy’sresilience. Resiliencehasnothistoricallybeenthecountry’seconomicstrongpoint.12throughoutthe1990sgrowthoscillatedlikeanelectrocardiogram13aviolentheartattack.This14hasbeenoneofthemainreasonswhythecountryhasfaileddismallytoattackmuch-neededforeigndirectinvestment.Itsstockofsuchinvestmentislowernowthanitwasinthe1980sandannual15havescarcelyeverreached＄1billion. Onedeterrenttoforeigninvestorsisdueto16onJanuary1st2005.OnthatdayTurkeywilltakeawaytherightofvirtuallyeveryoneofitscitizenstocallthemselvesamillionaire.Sixzeroswillberemovedfromthefacevalueofthelira里拉土耳其货币单位;oneunitofthelocal17willhenceforthbeworthwhatlmillionarenow—ieabout0.530.53欧元.Goodswillhavetobe18inboththenewandoldliraforthewholeoftheyear19foreignbankersand20canbegintolookforwardtoatimeinTurkeywhentheywillnolongerhavetojugglementallywithindeterminatestringsofzeros Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.19
SomeoftheconcernssurroundingTurkey’sapplicationtojointheEuropeanUniontobe1onbytheEU’sCouncilofMinistersonDecember17thareeconomic—inparticularthecountry’srelativepoverty.ItsGDPperheadislessthanathirdoftheaverageforthe15pre-2004membersoftheEU.2itisnotfaroffthatofLatvia—oneofthetennewmemberswhich3onMay1st2004anditismuchthesameas4oftwocountriesBulgariaandRomaniawhichthisweekconcluded5talkswiththeEUthatcouldmakethemfullmembersonJanuary1st2007. 6thecountry’srecenteconomicprogresshasbeenaccordingtoDonaldJohnstonthesecretary-generaloftheOECDstunning.GDPinthesecondquarteroftheyearwas13.4%higherthanayearearliera7ofgrowththatnoEUcountrycomescloseto8.Turkey’s9ratehasjustfallenintosinglefiguresforthefirsttimesince1972andthisweekthecountry10agreementwiththeIMFonanewthree-year＄10billioneconomicprogramthatwillhelpTurkey11inflationtowardEuropeanlevelsandenhancetheeconomy’sresilience. Resiliencehasnothistoricallybeenthecountry’seconomicstrongpoint.12throughoutthe1990sgrowthoscillatedlikeanelectrocardiogram13aviolentheartattack.This14hasbeenoneofthemainreasonswhythecountryhasfaileddismallytoattackmuch-neededforeigndirectinvestment.Itsstockofsuchinvestmentislowernowthanitwasinthe1980sandannual15havescarcelyeverreached＄1billion. Onedeterrenttoforeigninvestorsisdueto16onJanuary1st2005.OnthatdayTurkeywilltakeawaytherightofvirtuallyeveryoneofitscitizenstocallthemselvesamillionaire.Sixzeroswillberemovedfromthefacevalueofthelira里拉土耳其货币单位;oneunitofthelocal17willhenceforthbeworthwhatlmillionarenow—ieabout0.530.53欧元.Goodswillhavetobe18inboththenewandoldliraforthewholeoftheyear19foreignbankersand20canbegintolookforwardtoatimeinTurkeywhentheywillnolongerhavetojugglementallywithindeterminatestringsofzeros Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.13
SomeoftheconcernssurroundingTurkey’sapplicationtojointheEuropeanUniontobe1onbytheEU’sCouncilofMinistersonDecember17thareeconomic—inparticularthecountry’srelativepoverty.ItsGDPperheadislessthanathirdoftheaverageforthe15pre-2004membersoftheEU.2itisnotfaroffthatofLatvia—oneofthetennewmemberswhich3onMay1st2004anditismuchthesameas4oftwocountriesBulgariaandRomaniawhichthisweekconcluded5talkswiththeEUthatcouldmakethemfullmembersonJanuary1st2007. 6thecountry’srecenteconomicprogresshasbeenaccordingtoDonaldJohnstonthesecretary-generaloftheOECDstunning.GDPinthesecondquarteroftheyearwas13.4%higherthanayearearliera7ofgrowththatnoEUcountrycomescloseto8.Turkey’s9ratehasjustfallenintosinglefiguresforthefirsttimesince1972andthisweekthecountry10agreementwiththeIMFonanewthree-year＄10billioneconomicprogramthatwillhelpTurkey11inflationtowardEuropeanlevelsandenhancetheeconomy’sresilience. Resiliencehasnothistoricallybeenthecountry’seconomicstrongpoint.12throughoutthe1990sgrowthoscillatedlikeanelectrocardiogram13aviolentheartattack.This14hasbeenoneofthemainreasonswhythecountryhasfaileddismallytoattackmuch-neededforeigndirectinvestment.Itsstockofsuchinvestmentislowernowthanitwasinthe1980sandannual15havescarcelyeverreached＄1billion. Onedeterrenttoforeigninvestorsisdueto16onJanuary1st2005.OnthatdayTurkeywilltakeawaytherightofvirtuallyeveryoneofitscitizenstocallthemselvesamillionaire.Sixzeroswillberemovedfromthefacevalueofthelira里拉土耳其货币单位;oneunitofthelocal17willhenceforthbeworthwhatlmillionarenow—ieabout0.530.53欧元.Goodswillhavetobe18inboththenewandoldliraforthewholeoftheyear19foreignbankersand20canbegintolookforwardtoatimeinTurkeywhentheywillnolongerhavetojugglementallywithindeterminatestringsofzeros Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.15
Addictionissuchaharmfulbehaviorinfactthatevolutionshouldhavelongagoweededitoutofthepopulation:ifit’shardtodrivesafelyundertheinfluenceimaginetryingtorunfromasaber-toothedtigerorcatchasquirrelforlunch.AndyetsaysDr.NoraVolkowdirectorofNIDAandapioneerintheuseofimagingtounderstandaddiction"theuseofdrugshasbeenrecordedsincethebeginningofcivilization.Humansinmyviewwillalwayswanttoexperimentwiththingstomakethemfeelgood." That’sbecausedrugsofabuseco-opttheverybrainfunctionsthatallowedourdistantancestorstosurviveinahostileworld.Ourmindsareprogrammedtopayextraattentiontowhatneurologistscallsalience—thatisspecialrelevance.Threatsforexamplearehighlysalientwhichiswhyweinstinctivelytrytogetawayfromthem.Butsoarefoodandsexbecausetheyhelptheindividualandthespeciessurvive.Drugsofabusecapitalizeonthisready-madeprogramming.Whenexposedtodrugsourmemorysystemsrewardcircuitsdecisionmakingskillsandconditioningkickin—salienceinoverdrive—tocreateanallconsumingpatternofuncontrollablecraving."Somepeoplehaveageneticpredispositiontoaddiction"saysVolkow."Butbecauseitinvolvesthesebasicbrainfunctionseveryonewillbecomeanaddictifsufficientlyexposedtodrugsoralcohol." Thatcangofornonchemicaladdictionsaswell.Behaviorsfromgamblingtoshoppingtosexmaystartoutashabitsbutslideintoaddictions.Sometimestheremightbeabehavior-specificrootoftheproblem.Volkow’sresearchgroupforexamplehasshownthatpathologicallyobesepeoplewhoarecompulsiveeatersexhibithyperactivityintheareasofthebrainthatprocessfoodstimuli—includingthemouthlipsandtongue.Forthemactivatingtheseregionsislikeopeningthefloodgatestothepleasurecenter.Almostanythingdeeplyenjoyablecanturnintoanaddictionthough. Ofcoursenoteveryonebecomesanaddict.That’sbecausewehaveothermoreanalyticalregionsthatcanevaluateconsequencesandoverridemerepleasureseeking.Brainimagingisshowingexactlyhowthathappens.PaulusforexamplelookedatdrugaddictsenrolledinaVAhospital’sintensivefour-weekrehabilitationprogram.Thosewhoweremorelikelytorelapseinthefirstyearaftercompletingtheprogramwerealsolessabletocompletetasksinvolvingcognitiveskillsandlessabletoadjusttonewrulesquickly.Thissuggestedthatthosepatientsmightalsobelessadeptatusinganalyticalareasofthebrainwhileperformingdecision-makingtasks.Sureenoughbrainscansshowedthattherewerereducedlevelsofactivationintheprefrontalcortexwhererationalthoughtcanoverrideimpulsivebehavior.It’simpossibletosayifthedrugsmighthavedamagedtheseabilitiesintherelapsersaneffectratherthanacauseofthechemicalabuse—butthefactthatthecognitivedeficitexistedinonlysomeofthedruguserssuggeststhattherewassomethinginnatethatwasuniquetothem.TohissurprisePaulusfoundthat80%to90%ofthetimehecouldaccuratelypredict:whowouldrelapsewithinayearsimplybyexaminingthescans. Anotherareaoffocusforresearchersinvolvesthebrain’srewardsystempoweredlargelybytheneurotransmitterdopamine.Investigatorsarelookingspecificallyatthefamilyofdopaminereceptorsthatpopulatenervecellsandbindtothecompound.Thehopeisthatifyoucanreducetheeffectofthebrainchemicalthatcarriesthepleasurablesignalyoucanloosenthedrug’shold. Wecaninferfromthepassagethatwemaycureaddictionby
SomeoftheconcernssurroundingTurkey’sapplicationtojointheEuropeanUniontobe1onbytheEU’sCouncilofMinistersonDecember17thareeconomic—inparticularthecountry’srelativepoverty.ItsGDPperheadislessthanathirdoftheaverageforthe15pre-2004membersoftheEU.2itisnotfaroffthatofLatvia—oneofthetennewmemberswhich3onMay1st2004anditismuchthesameas4oftwocountriesBulgariaandRomaniawhichthisweekconcluded5talkswiththeEUthatcouldmakethemfullmembersonJanuary1st2007. 6thecountry’srecenteconomicprogresshasbeenaccordingtoDonaldJohnstonthesecretary-generaloftheOECDstunning.GDPinthesecondquarteroftheyearwas13.4%higherthanayearearliera7ofgrowththatnoEUcountrycomescloseto8.Turkey’s9ratehasjustfallenintosinglefiguresforthefirsttimesince1972andthisweekthecountry10agreementwiththeIMFonanewthree-year＄10billioneconomicprogramthatwillhelpTurkey11inflationtowardEuropeanlevelsandenhancetheeconomy’sresilience. Resiliencehasnothistoricallybeenthecountry’seconomicstrongpoint.12throughoutthe1990sgrowthoscillatedlikeanelectrocardiogram13aviolentheartattack.This14hasbeenoneofthemainreasonswhythecountryhasfaileddismallytoattackmuch-neededforeigndirectinvestment.Itsstockofsuchinvestmentislowernowthanitwasinthe1980sandannual15havescarcelyeverreached＄1billion. Onedeterrenttoforeigninvestorsisdueto16onJanuary1st2005.OnthatdayTurkeywilltakeawaytherightofvirtuallyeveryoneofitscitizenstocallthemselvesamillionaire.Sixzeroswillberemovedfromthefacevalueofthelira里拉土耳其货币单位;oneunitofthelocal17willhenceforthbeworthwhatlmillionarenow—ieabout0.530.53欧元.Goodswillhavetobe18inboththenewandoldliraforthewholeoftheyear19foreignbankersand20canbegintolookforwardtoatimeinTurkeywhentheywillnolongerhavetojugglementallywithindeterminatestringsofzeros Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.5
SomeoftheconcernssurroundingTurkey’sapplicationtojointheEuropeanUniontobe1onbytheEU’sCouncilofMinistersonDecember17thareeconomic—inparticularthecountry’srelativepoverty.ItsGDPperheadislessthanathirdoftheaverageforthe15pre-2004membersoftheEU.2itisnotfaroffthatofLatvia—oneofthetennewmemberswhich3onMay1st2004anditismuchthesameas4oftwocountriesBulgariaandRomaniawhichthisweekconcluded5talkswiththeEUthatcouldmakethemfullmembersonJanuary1st2007. 6thecountry’srecenteconomicprogresshasbeenaccordingtoDonaldJohnstonthesecretary-generaloftheOECDstunning.GDPinthesecondquarteroftheyearwas13.4%higherthanayearearliera7ofgrowththatnoEUcountrycomescloseto8.Turkey’s9ratehasjustfallenintosinglefiguresforthefirsttimesince1972andthisweekthecountry10agreementwiththeIMFonanewthree-year＄10billioneconomicprogramthatwillhelpTurkey11inflationtowardEuropeanlevelsandenhancetheeconomy’sresilience. Resiliencehasnothistoricallybeenthecountry’seconomicstrongpoint.12throughoutthe1990sgrowthoscillatedlikeanelectrocardiogram13aviolentheartattack.This14hasbeenoneofthemainreasonswhythecountryhasfaileddismallytoattackmuch-neededforeigndirectinvestment.Itsstockofsuchinvestmentislowernowthanitwasinthe1980sandannual15havescarcelyeverreached＄1billion. Onedeterrenttoforeigninvestorsisdueto16onJanuary1st2005.OnthatdayTurkeywilltakeawaytherightofvirtuallyeveryoneofitscitizenstocallthemselvesamillionaire.Sixzeroswillberemovedfromthefacevalueofthelira里拉土耳其货币单位;oneunitofthelocal17willhenceforthbeworthwhatlmillionarenow—ieabout0.530.53欧元.Goodswillhavetobe18inboththenewandoldliraforthewholeoftheyear19foreignbankersand20canbegintolookforwardtoatimeinTurkeywhentheywillnolongerhavetojugglementallywithindeterminatestringsofzeros Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.7
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