阅读理解。Sincethe1970sscientistshavebeensearchingforwaystolinkthebrainwithcomputers.Brain-computerinterface(界面)(BCI)technologycouldhelppeoplewithdisabilitiessendcommandstomachines.Recentlytw
阅读理解。
Sincethe1970sscientistshavebeensearchingforwaystolinkthebrainwithcomputers.
Brain-computerinterface(界面)(BCI)technologycouldhelppeoplewithdisabilitiessendcommands
tomachines.
RecentlytworesearchersJoseMilanandMicheleTavellafromtheFederalPolytechnicschoolin
LausanneSwitzerlanddemonstrated(展示)asmallroboticwheelchairdirectedbyaperson'sthoughts.
InthelaboratoryTavellaoperatedthewheelchairjustbythinkingaboutmovinghisleftorrighthand.
Hecouldeventalkashewatchedthevehicleandguideditwithhisthoughts.
"Ourbrainhasbillionsofnervecells.Thesesendsignalsthroughthespinalcord(脊髓)tothemuscles
togiveustheabilitytomove.Butspinalcordinjuriesorotherconditionscanpreventtheseweakelectricalsignalsfromreachingthemuscles"Tavellasays. "Oursystemallowsdisabledpeopletocommunicate
withexternalworldandalsotocontroldevices."
Theresearchersdesignedaspecialcapfortheuser.Thisheadcoverpicksupthesignalsfromthe
scalp(头皮)andsendsthemtoacomputer.Thecomputerinterpretsthesignalsandcommandsthe
motorizedwheelchair.Thewheelchairalsohastwocamerasthatidentifyobjectsinitspath.Theyhelp
thecomputerreacttocommandsfromthebrain.
Prof.Milantheteamleadersaysscientistskeepimprovingthecomputersoftwarethatinterprets
brainsignalsandturnsthemintosimplecommands."ThepracticalpossibilitiesthatBCItechnologyoffers
todisabledpeoplecanbegroupedintwocategories:communicationandcontrollingdevices.One
exampleisthiswheelchair."
Hesayshisteamhassettwogoals.Oneistestingwithrealpatientssoastoprovethatthisisa
technologytheycanbenefitfrom.Andtheotheristoguaranteethattheycanusethetechnologyover
longperiodsoftime.
1.BCIisatechnologythatcan_______.
A.helptoupdatecomputersystems
B.linkthehumanbrainwithcomputers
C.helpthedisabledtorecover
D.controlaperson'sthoughts