Inferior parietal lobule | Radiology Reference Article

The inferior parietal lobule (IPL), also known as Geschwind territory or area, is one of the three divisions of the parietal lobe. ×RecentEditsLogInArticlesSignUpCasesCoursesQuizDonateAbout×MenuSearch ADVERTISEMENT:Radiopaediaisfreethankstooursupportersandadvertisers.BecomeaGoldSupporterandseenoads. ArticlesCasesCoursesLogIn LoginSignup {"url":"/signup-modal-props.json?lang=us\u0026email="} ArticlesCasesCoursesQuizAboutRecentEditsGoad-freeSearch InferiorparietallobuleLastrevisedbyDrDanielJBell◉on21Apr2021EditarticleViewrevisionhistoryReportproblemwithArticleCitation,DOI&articledataCitation:Gai,D.,Bell,D.Inferiorparietallobule.Referencearticle,Radiopaedia.org.(accessedon28May2022)https://doi.org/10.53347/rID-38712DOI:https://doi.org/10.53347/rID-38712Permalink:https://radiopaedia.org/articles/38712rID:38712Articlecreated:30Jul2015byDrDayuGai◉◈Revisions:10timesby6users-seefullrevisionhistorySystem:CentralNervousSystemSection:AnatomyTags:-Synonyms:Geschwind'sterritoryGeschwind'sareaGeschwindareaGeschwindterritoryInferiorparietallobule(IPL)URLofArticle Theinferiorparietallobule(IPL),alsoknownasGeschwindterritoryorarea,isoneofthethreedivisionsoftheparietallobe.Itiscomposedofasupramarginalgyrusrostrallyandanangulargyruscaudally. Itisinvolvedwithsensorimotorintegration,spatialattentionandvisuomotorandauditoryprocessing1. Onthispage: Article: Grossanatomy Arterialsupply Historyandetymology Relatedpathology Practicalpoints Relatedarticles References Images:Casesandfigures GrossanatomyRelationsTheinferiorparietallobuleisseparatedfromthesuperiorparietallobule(SPL)bytheintraparietalsulcus.Itisboundedbythepostcentralsulcusanteriorly,temporo-occipitallinelaterally,parieto-occipitalsulcusposteriorlyandintraparietalsulcusmedially.ArterialsupplyThechiefbloodsupplyoftheinferiorparietallobuleisfromthemiddlecerebralartery.HistoryandetymologyNormanGeschwind(1926-1984)wasanAmericanneurologistwithamajorinfluenceontheneurologyofbehavior3.RelatedpathologyDamagetothedominantinferiorparietallobulemayleadtoimpairmentofspeechrepetition2.PracticalpointsTheposteriorascendingramus(oftheSylvianfissure)signstatesthattheSylvianfissureextendsintotheanteriorportionoftheinferiorparietallobule.Thegyruswhichcapsthisfissureisthesupramarginalgyrus. References1.CaspersS,SchleicherA,Bacha-TramsMet-al.Organizationofthehumaninferiorparietallobulebasedonreceptorarchitectonics.Cereb.Cortex.2012;23(3):615-28.doi:10.1093/cercor/bhs048-Freetextatpubmed-Pubmedcitation 2.FridrikssonJ,KjartanssonO,MorganPSet-al.Impairedspeechrepetitionandleftparietallobedamage.J.Neurosci.2010;30(33):11057-61.doi:10.1523/JNEUROSCI.1120-10.2010-Freetextatpubmed-Pubmedcitation3.DevinskyO.NormanGeschwind:influenceonhiscareerandcommentsonhiscourseontheneurologyofbehavior.(2009)Epilepsy&behavior:E&B.15(4):413-6.doi:10.1016/j.yebeh.2009.04.029-Pubmed Relatedarticles:Anatomy:Brain Anatomy:Brain brain greymatter whitematter cerebrum  cerebralhemisphere (telencephalon) cerebrallobesandgyri frontallobe frontalpole frontopolarcortex superiorfrontalgyrus middlefrontalgyrus inferiorfrontalgyrus parsorbitalis parstriangularis parsopercularis precentralgyrus medialfrontalgyrussupplementarymotorarea paracentrallobule cingulategyrusanteriorcingulatecortex orbitalgyrus gyrusrectus rostralgyrus septalarea parietallobe postcentralgyrus superiorparietallobule inferiorparietallobule supramarginalgyrus angulargyrus precuneus occipitallobe occipitalpole lingualgyrus fusiformgyrus(Brodmannarea37) calcarine(visual)cortex cuneus temporallobe temporalpole Heschlgyrus superiortemporalgyrus middletemporalgyrus inferiortemporalgyrus fusiformgyrus mesialtemporallobe amygdala hippocampusmalrotationofthehippocampus uncus dentategyrusbandofGiacomini parahippocampalgyrus medialoccipitotemporalgyrus subiculum entorhinalcortex lateralparietotemporalline basalforebrain anteriorperforatedsubstance substantiainnominatabasalnucleusofMeynert limbicsystem limbiclobe parahippocampus septalnuclei nucleusaccumbens Papezcircuit insula limeninsulae operculum cerebralsulciandfissures(A-Z) calcarinefissure callosalsulcus central(Rolandic)sulcus cingulatesulcus collateralsulcus inferiorfrontalsulcus inferioroccipitalsulcus inferiortemporalsulcus interhemisphericfissure intraparietalsulcus lateral(Sylvian)sulcus anteriorramusofthelateralsulcus ascendingramusofthelateralsulcus circularsulcus lateraloccipitalsulcus marginalsulcus occipitotemporalsulcus olfactorysulcus paracentralsulcus paraolfactorysulcus parieto-occipitalfissure posteriorparolfactorysulcus precentralsulcus preoccipitalnotch postcentralsulcus rhinalsulcus rostralsulcus subparietalsulcus superiorfrontalsulcus superioroccipitalsulcus superiortemporalsulcus corticalhistologyBetzcells whitemattertracts commissures corpuscallosum indusiumgriseum callososeptalinterface Probstbundles anteriorcommissure hippocampalcommissurepsalterium habenularcommissure posteriorcommissure supraopticcommissure Guddencommissure Meynertcommissure Gasnercommissure fornix forcepsmajor forcepsminor internalcapsule externalcapsule extremecapsule coronaradiata centrumsemiovale corticobulbar mediallemniscus opticradiation Meyerloop superiorgeniculocalcarinetract subcorticalU-fibers terminalzonesofmyelination uncinatefasciculus deepgreymatter basalgangliaclaustrum caudatenucleuscaudothalamicgroove corpusstriatum lentiformnucleus globuspallidus putamen neostriatum nucleusaccumbens pituitarygland posteriorpituitaryandstalk (partofdiencephalon)ectopicposteriorpituitary anteriorpituitary inferiorhypophysealarterialcircle diencephalon thalamencephalon thalamus interthalamicadhesion lateralgeniculatenucleus medialgeniculatenucleus metathalamus epithalamus habenula striamedullaris pinealgland subthalamussubthalamicnuclei hypothalamus supraopticnucleus mammillarybodies tubercinereum brainstem  midbrain (mesencephalon) tectalplate tegmentum cerebralpeduncles corporaquadrigemina posteriorperforatedsubstance periaqueductalgreymatter pons (partofmetencephalon) facialcolliculus superiorolivarynucleus medullaoblongata (myelencephalon) olive inferiorolivarynucleus nucleusofthetractussolitarius nucleusambiguus dorsalvagalmotornucleus whitematter greymatter ​non-cranialnerve substantianigra rednucleus superiorcolliculi inferiorcolliculi cranialnervenuclei oculomotornucleus Edinger-Westphalnucleus trochlearnucleus motornucleusofCNV ​mesencephalicnucleusofCNV mainsensorynucleusofCNV spinalnucleusofCNV abducentnucleus facialnucleus superiorsalivatorynucleus cochlearnuclei vestibularnuclei inferiorsalivatorynucleus solitarytractnucleus ambiguusnucleus dorsalvagalmotornucleus hypoglossalnucleus cerebellum (partofmetencephalon) vermis cerebellarhemisphere cerebellartonsil dentatenucleus cerebellarpeduncles superiorcerebellarpeduncle middlecerebellarpeduncle inferiorcerebellarpeduncle cranialmeninges (meninxprimitiva) duramater (pachymeninx) falxcerebri tentoriumcerebelli falxcerebelli petroclinoidligaments diaphragmasellae carotidcave leptomeninges arachnoidmater  Liliequestmembrane arachnoidgranulationsaberrantarachnoidgranulations piamater veluminterpositumcavumveluminterpositum extraduralspace subduralspace subarachnoidspace bloodsupplyofthemeninges innervationofthemeninges CSFspaces ventricularsystem lateralventricles septumpellucidum cavumseptumpellucidum cavumvergae interventricularforamen(ofMonro)choroidalfissure thirdventricle laminaterminalis supraopticrecess infundibularrecess pinealrecess suprapinealrecess aqueductofSylvius fourthventricle superiormedullaryvelum inferiormedullaryvelum obex areapostrema rhomboidfossa calcaravis foramenofMagendie foraminaofLushka telachoroidea cerebrospinalfluid choroidplexusBochdalek'sflowerbasket subarachnoidcisterns suprasellarcisternemptysellasign interpeduncularcistern ambientcisterntransversefissure quadrigeminalcistern pericallosalcistern prepontinecistern cerebellopontinecistern premedullarycistern Sylviancistern cisternamagnamegacisternamagna Meckelcave cranialnerves(mnemonic) olfactorynerve(CNI) opticnerve(CNII) opticchiasm optictract oculomotornerve(CNIII) trochlearnerve(CNIV) trigeminalnerve(CNV)(mnemonic)trigeminalganglion abducensnerve(CNVI) facialnerve(CNVII)(segmentsmnemonic|branchesmnemonic) geniculateganglion greater(superficial)petrosalnerveVidiannerve externalpetrosalnerve nervetostapedius nervusintermedius vestibulocochlearnerve(CNVIII) vestibularganglion(Scarpa'sganglion) glossopharyngealnerve(CNIX) Jacobsonnerve lesserpetrosalnerve vagusnerve(CNX)Arnoldnerve spinalaccessorynerve(CNXI) hypoglossalnerve(CNXII) functionalneuroanatomy Brodmannareas corticalmotorsystemextrapyramidalsystem corticalsensorysystem painandtemperaturesensation vibrationandproprioceptionsensation auditory/speechsystem Broca'sarea(Brodmannarea44) Wernicke'sarea(Brodmannarea22) visualsystem olfactorysystem defaultmodenetwork CNSdevelopment braindevelopment neuralplateneuraltube prosencephalon telencephalon paraphysiselements Rathkepouch diencephalon mesencephalon rhombencephalon metencephalon myelencephalon cerebralvascularsupply arteries vascularterritories anteriorcirculation posteriorcirculation circleofWillis internalcarotidartery(ICA) (segments) inferolateraltrunk meningohypophysealtrunkinferiorhypophysealartery capsulararteries(ofMcConnell)(variable) superiorhypophysealartery anteriorcerebralartery(ACA) anteriorcommunicatingartery(ACOM) mediallenticulostriatearteries recurrentarteryofHeubner medialfrontobasalartery frontopolarartery orbitofrontalartery pericallosalartery callosomarginalartery pericallosalmoustache middlecerebralartery(MCA) M1branches lenticulostriatearteries mediallenticulostriatearteries laterallenticulostriatearteries anteriortemporalartery temporopolarartery M2branches posteriorcommunicatingartery(PCom) ophthalmicartery lacrimalartery supraorbitalartery posteriorethmoidalartery anteriorethmoidalartery internalpalpebralartery supratrochlearartery (frontalartery) dorsalnasalartery anteriorchoroidalartery vertebralartery posteriorinferiorcerebellarartery(PICA) basilarartery anteriorinferiorcerebellarartery(AICA)labyrinthineartery pontinearteries superiorcerebellarartery(SCA) posteriorcerebralartery(PCA) calcarineartery splenialartery posteriorchoroidalartery medialposteriorchoroidalartery lateralposteriorchoroidalartery normalvariants intracranialarterialfenestration internalcarotidartery(ICA) absentICA aberrantICA anteriorcerebralartery(ACA)azygosACA middlecerebralartery(MCA) accessoryMCA duplicatedMCA MCAfenestration posteriorcerebralartery(PCA) fetaloriginofPCA/fetalPCOM arteryofPercheron basilarartery basilararteryfenestration basilararteryhypoplasia persistentcarotid-vertebrobasilararteryanastomoses (mnemonic) persistentprimitivetrigeminalartery persistentoticartery persistenthypoglossalartery persistentproatlantalarterypersistentproatlantalintersegmentalartery vertebralarteryvertebralarteryhypoplasia ophthalmicarterymeningo-ophthalmicartery cerebralvenoussystem duralvenoussinuses basilarvenousplexus cavernoussinus (mnemonic) clivaldiploicveins inferiorpetro-occipitalvein inferiorpetrosalsinus inferiorsagittalsinus intercavernoussinus internalcarotidarteryvenousplexusofRektorzik jugularbulb marginalsinus occipitalsinus sigmoidsinus sphenoparietalsinus straightsinus superiorpetrosalsinussuperiorpetrosalvein superiorsagittalsinus torculaherophili transversesinus cerebralveins superficialveinsofthebrain superiorcerebralveins(superficialcerebralveins) inferiorcerebralveins superficialmiddlecerebralvein superioranastomoticvein(ofTrolard) inferioranastomoticvein(ofLabbe) deepveinsofthebrain greatcerebralvein(ofGalen) basalveinofRosenthal lateralmesencephalicvein peduncularvein anteriorpontomesencephalicvein transversepontineveins anteriormedullaryvein internalcerebralvein thalamostriatevein septalcerebralvein superiorcerebellarvein precentralcerebellarvein superiorvermianvein venouscircleofTrolard normalvariantspersistentfalcinesinus glymphaticpathway Promotedarticles(advertising) ADVERTISEMENT:Supportersseefewer/noads CasesandfiguresFigure1:superiorviewofinferiorparietallobuleFigure1:superiorviewofinferiorparietallobuleDragheretoreorder. 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