欢迎来到天天文库
浏览记录
ID:39270669
大小:3.45 MB
页数:54页
时间:2019-06-29
《02-神经科学与行为》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Myers’PSYCHOLOGYChapter2NeuroscienceandBehaviorNeuralCommunicationBiologicalPsychologybranchofpsychologyconcernedwiththelinksbetweenbiologyandbehaviorsomebiologicalpsychologistscallthemselvesbehavioralneuroscientists,neuropsychologists,behaviorgeneticists,phy
2、siologicalpsychologists,orbiopsychologistsNeuronanervecellthebasicbuildingblockofthenervoussystemNeuralCommunicationDendritethebushy,branchingextensionsofaneuronthatreceivemessagesandconductimpulsestowardthecellbodyAxontheextensionofaneuron,endinginbranchingt
3、erminalfibers,throughwhichmessagesaresenttootherneuronsortomusclesorglandsMyelin[MY-uh-lin]SheathalayeroffattycellssegmentallyencasingthefibersofmanyneuronsenablesvastlygreatertransmissionspeedofneutralimpulsesNeuralCommunicationNeuralCommunicationActionPoten
4、tialaneuralimpulse;abriefelectricalchargethattravelsdownanaxongeneratedbythemovementofpositivelychargedatomsinandoutofchannelsintheaxon’smembraneThresholdthelevelofstimulationrequiredtotriggeraneuralimpulseNeuralCommunicationCellbodyendofaxonDirectionofneural
5、impulse:towardaxonterminalsNeuralCommunicationSynapse[SIN-aps]junctionbetweentheaxontipofthesendingneuronandthedendriteorcellbodyofthereceivingneurontinygapatthisjunctioniscalledthesynapticgaporcleftNeurotransmitterschemicalmessengersthattraversethesynapticga
6、psbetweenneuronswhenreleasedbythesendingneuron,neuro-transmitterstravelacrossthesynapseandbindtoreceptorsitesonthereceivingneuron,therebyinfluencingwhetheritwillgenerateaneuralimpulseNeuralCommunicationNeuralCommunicationSerotoninPathwaysDopaminePathwaysNeura
7、lCommunicationNeuralCommunicationAcetylcholine[ah-seat-el-KO-leen]aneurotransmitterthat,amongitsfunctions,triggersmusclecontractionEndorphins[en-DOR-fins]“morphinewithin”natural,opiatelikeneurotransmitterslinkedtopaincontrolandtopleasureNeuralCommunicationNeu
8、rotransmittermoleculeReceivingcellmembraneReceptorsiteonreceivingneuronAgonistmimicsneurotransmitterAntagonistblocksneurotransmitterTheNervousSystemNervousSystemthebody’sspeedy,electroche
此文档下载收益归作者所有