09.Spectral fingerprints of large-scale neuronal interactions .pdf

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1、REVIEWSSpectralfingerprintsoflarge-scaleneuronalinteractionsMarkusSiegel1*,TobiasH. Donner2*andAndreasK. Engel3Abstract

2、Cognitionresultsfrominteractionsamongfunctionallyspecializedbutwidelydistributedbrainregions;however,neurosciencehassofarlargelyfocusedoncharacterizin

3、gthefunctionofindividualbrainregionsandneuronstherein.Herewediscussrecentstudiesthathaveinsteadinvestigatedtheinteractionsbetweenbrainregionsduringcognitiveprocessesbyassessingcorrelationsbetweenneuronaloscillationsindifferentregionsoftheprimatecerebralcortex.Thesestudi

4、eshaveopenedanewwindowontothelarge-scalecircuitmechanismsunderlyingsensorimotordecision-makingandtop-downattention.Weproposethatfrequency-specificneuronalcorrelationsinlarge-scalecorticalnetworksmaybe‘fingerprints’ofcanonicalneuronalcomputationsunderlyingcognitiveproces

5、ses.Cognitiveprocessingishighlyselective,integrativeandinteractionbetweenneuronalpopulationslocatedinSpectralanalysisAgeneraltermforanalysisflexible.Thisisachievedthroughthetransientforma-widelyseparatedcorticalareas.Second,bothhavebeentionoflarge‘coalitionsofneurons’1,

6、whicharewidelythefocusofseveralrecentstudieslinkinginteractionstechniques(forexample,Fouriertransformorwavelettransform)distributedacrossmanybrainareas,exchangesignalsinbetweenbrainareastocognition.Thesestudiesshowedthatdecomposetimedomainaspecificmannerandcompetewithea

7、chother.Justasthatlarge-scalecorticalinteractionstypicallyinvolvesignalsintotheirdifferentinpolitics,onecoalitiontypicallyrulesuntilitisover-frequency-specific,correlatedneuronaloscillations.Thefrequencycomponents.turnedbyanother.Inthebrain,thewinningcoalitiondetailedan

8、alysesofsuchfrequency-specificinteractionsMulti-microelectrodegovernsapercept,thoughtoraction.Thus,understand-indicatetightmechanisticlinksbetweenprocessesthatrecordingsingtheneuronalbasisofcognitionrequiresanunder-mayseemdifferentatthebehaviourallevelofanalysis.Simulta

9、neousrecordingsofstandingofhowtransientcoalitionsofneuronsform,Theyhavealsobeenabletodissociatebetweenseem-sin