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概述痛觉痛觉调制(tiáozhì)疼痛的治疗Americanpeoplespend1/3oftotalmedicalbudgetforpainrelievingOneinthreeAustralianhouseholdshasoneormoremembersinchronicpainOfthem45%complainingseveretounendurablepainthathasbeenpresentformorethan3yearsHowdowereallyperceptpainfromthebrainremainsunknownGlutamatereleasefromC-fiberTheRangeofActionoftheTwoClassesofTransmittersDifferGlutamateareconfinedtopostsynapticneuronsintheimmediatevicinityofthesynapticterminalasaresultoftheefficientreuptakeofaminoacidsintoglialcellsornerveterminalsNeuropeptides(includingsubstanceP)candiffuseconsiderabledistancefromtheirsiteofreleasebecausethereisnospecificreuptakemechanism---influencemanypostsynapticdorsalhornneuronsFig.2王韵王韵王韵Peripheralmechanismofpain:secondmessengersPeripheralmechanismofpain:asummaryforsecondmessengersDRG神经元分类(fēnlèi)与功能DRG神经元上的三种(sānzhǒnɡ)受体PsychologyofPain思考题：1.简述痛觉(tòngjié)产生的全过程2.如何判定一种化学物质为传递伤害性信息的神经递质？3.何为闸门控制学说及闸门控制学说的意义Thankyou感谢您的观看(guānkàn)！
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