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Auditorypathway

Auditorypathway(auditorypathway),abbreviatedasauditorypathway,referstoaseriesofanatomicalstructuresrelatedtotheproductionofhearing.Thepartoftheauditorypathwayoutsidethecentralnervoussystem(brain)iscalledtheauditoryperiphery,andthepartwithinthecentralnervoussystemiscalledtheauditorycenterorcentralauditorysystem.

Theauditorycenterspansthecerebralcortexofthebrainstem,midbrain,andthalamus,andisoneofthelongestcentralpathwaysinthesensorysystem.Frombottomtotop,themainlinksinclude:Cochlearnucleus

Trapezoidbody

Auditory center

Periolivarynuclei

UpSuperiorolives

LateralLemniscus

InferiorcolliculusandSuperiorcolliculus

ThemedialkneeofthethalamusMedialgeniculatebody

Auditorycorticesinthetemporallobeofthecerebralcortex

Principleoftheauditorycenter

Correspondingtotheauditorycenter,locatedinTheauditorypathwaybelowthecenteriscalledtheperipheralauditorysystem.Soundinformationistransmittedfromthesurroundingauditorysystemtothecentralauditorysystem.Thecentralauditorysystemhasthefunctionofprocessingandanalyzingsound,likefeelingthesoundintensity,wavelength,anddeterminingdirection.Therearealsospeciallydifferentiatedcellsthatrespondtothebeginningandendofsoundrespectively.Theauditoryinformationtransmittedtothecerebralcortexisalsoconnectedwiththelanguagecenterofthebrainthatmanages"reading","writing",and"speaking",effectivelycompletingthefunctionsofreading,writing,andspeakingthatweoftenuse.Inaddition,withtheaidoftheauditorycenter,variousauditoryreflexes,suchasthestapediusreflex,etc.canbecompleted.Thisreflexcanprotecttheinnerearfromdamagewhenitisstimulatedloudly.

Relatedconcepts

Auditorytransmission

Therearetwowaysfortheconductionofmechanicalwavesintheear,namelyboneconductionandairconduction.Whenairconductiondisappears,boneconductionWhenthemainsoundtransmissionisconducted,itistransmissivedeafness,thatis,peripheralhearingloss.Whenbothtypesofconductiondecreaseorevendisappear,itissensorydeafness,thatis,centralhearingloss.

Auditorycentertest

Theauditorycentercanalsosendoutsomeinhibitorycommandstothesurroundingauditorysystem.Theauditoryattentionfunctionofthecentercanrelativelyeliminatetheinterferenceofothers.Therefore,whenfacingapatientwithauditorydysfunctionintheclinic,puretonethresholdtestandX-rayandCTexaminationcannotfullyreflectthepatient’sauditorydysfunction.Theauditorycentralfunctiontestisverynecessary.Thecentraltestcanhelpdeterminethelesion.Clarifythedegreeofhearingimpairment.

Therearemanywaystotestthecentralauditoryfunction,suchasfilteredspeech,timecompressedspeech,speechinnoise,interlacedYangyangewordstest,etc.Thepurposeofthesetestmethodsistoseetheintegrationoftheauditorycenterandanalyzewhetheritfunctionsnormally.TheinterlacedYangyangewordtestistoinputdifferenttwo-characterwordsintotheleftandrightearsinacertaintimesequence,resultinginbinauralcompetitionandnon-competition,allowingthesubjectstospeakthewordsinbothears.Fornormalpeople,althoughthereismutualinterferencebetweentwoears,withthehelpoftheintegratedfunctionoftheauditorycenter,itispossibletosaywhatthetwowordsare;butifthereisadiseaseintheauditorycenter,theerrorratewillincreasesignificantly.

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