_19 brain rhythms and sleep kaist19章脑节律和睡眠韩国科学技术院课件

《_19 brain rhythms and sleep kaist19章脑节律和睡眠韩国科学技术院课件》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、Bear:Neuroscience:ExploringtheBrain3eChapter19:BrainRhythmsandSleepSlide1Neuroscience:ExploringtheBrain,3rdEd,Bear,Connors,andParadisoCopyright©2007LippincottWilliams&WilkinsIntroductionRhythmicControlsofBrainSleepingandwaking,hibernation,breathing,walking,electricalrhythmsofcerebralcortexCere

2、bralcortex:RangeofrapidelectricalrhythmsEEG:ClassicalmethodofrecordingbrainrhythmsCircadianrhythms:Changeinphysiologicalfunctionsaccordingtodailyclocksinbrain2Neuroscience:ExploringtheBrain,3rdEd,Bear,Connors,andParadisoCopyright©2007LippincottWilliams&WilkinsTheElectroencephalogramTheElectroe

3、ncephalogram(EEG)MeasurementprovidingglimpseofgeneralizedactivityofcerebralcortexFunctionDiagnoseneurologicalconditionssuchasepilepsy,researchpurposeRichardCatonin1875,electricalrecordingsfromsurfaceofdogandrabbitbrainsusingprimitivedevicesensitivetovoltageHansBergerin1929,humanEEG3Neuroscienc

4、e:ExploringtheBrain,3rdEd,Bear,Connors,andParadisoCopyright©2007LippincottWilliams&WilkinsRecordingBrainWavesElectrodestoscalp,low-resistanceconnectionConnectedtobanksofamplifiersandrecordingdevicesVoltagefluctuationsmeasured(tensofmicrovolts)Electrodepairs:MeasuredifferentbrainregionsSetofsim

5、ultaneoussquiggles,voltagechangesbetweenelectrodepairsTheElectroencephalogram4Neuroscience:ExploringtheBrain,3rdEd,Bear,Connors,andParadisoCopyright©2007LippincottWilliams&WilkinsEEGFluctuationsandOscillationsTheElectroencephalogram5Neuroscience:ExploringtheBrain,3rdEd,Bear,Connors,andParadiso

6、Copyright©2007LippincottWilliams&WilkinsMagnetoencephalography(MEG)RecordingminisculemagneticsignalsgeneratedbyneuralactivityComparisonwithEEG,fMRI,PETMEGlocalizessourcesofneuralactivitybetterthanEEGMEGcannotprovidedetailedimagesoffMRIEEG,MEGmeasureneuronactivity,fMRI,PETchangesinbloodflow,m

7、etabolismTheElectroencephalogram6Neuroscience:ExploringtheBrain,3rdEd,Bear,Connors,andParadisoCopyright©2007LippincottWilliams&WilkinsEEGRhythmsCategorizationofrhythmsbasedonfrequencyBeta:Greaterthan14Hz,activatedcortexAlpha:8-13Hz,quie