cerebrum, the largest and uppermost portion of the brain. The cerebrum consists of the cerebral hemispheres and accounts for two-thirds of the total weight ...cerebrumSections&MediaArticleIntroduction&QuickFactsFastFactsRelatedContentMediaImagesAdditionalInfoMoreArticlesOnThisTopicContributorsArticleHistoryHomeHealth&MedicineAnatomy&PhysiologycerebrumanatomyPrintCiteverifiedCiteWhileeveryefforthasbeenmadetofollowcitationstylerules,theremaybesomediscrepancies.Pleaserefertotheappropriatestylemanualorothersourcesifyouhaveanyquestions.SelectCitationStyleMLAAPAChicagoManualofStyleCopyCitationShareShareSharetosocialmediaFacebookTwitterURLhttps://www.britannica.com/science/cerebrumMoreGiveFeedbackExternalWebsitesFeedbackCorrections?Updates?Omissions?Letusknowifyouhavesuggestionstoimprovethisarticle(requireslogin).FeedbackTypeSelectatype(Required)FactualCorrectionSpelling/GrammarCorrectionLinkCorrectionAdditionalInformationOtherYourFeedbackSubmitFeedbackThankyouforyourfeedbackOureditorswillreviewwhatyou’vesubmittedanddeterminewhethertorevisethearticle.JoinBritannica'sPublishingPartnerProgramandourcommunityofexpertstogainaglobalaudienceforyourwork!ExternalWebsitesInnerBody-CerebrumByTheEditorsofEncyclopaediaBritannica|ViewEditHistoryFastFactsRelatedContentrightcerebralhemisphereofthehumanbrainSeeallmediaKeyPeople:TorstenWiesel...(Showmore)RelatedTopics:brainmidbrainendbraininterbrain...(Showmore)Seeallfactsanddata→cerebrum,thelargestanduppermostportionofthebrain.Thecerebrumconsistsofthecerebralhemispheresandaccountsfortwo-thirdsofthetotalweightofthebrain.Onehemisphere,usuallytheleft,isfunctionallydominant,controllinglanguageandspeech.Theotherhemisphereinterpretsvisualandspatialinformation.Thecerebralhemispheresconsistofaninnercoreofmyelinatednervefibres,thewhitematter,andanoutercortexofgraymatter.Thecerebralcortexisresponsibleforintegratingsensoryimpulses,directingmotoractivity,andcontrollinghigherintellectualfunctions.Thehumancortexisseveralcentimetresthickandhasasurfaceare