Withtherecentadventofnewrecordingdevicesandaneasieraccesstosignalprocessingtools,researchersareincreasinglyexploringandstudyingthePupilDilation(PD)signal.Recently,numerousstudiespointedouttherelationsbetweenPDdynamicsandpsychophysiologicalstates.AlthoughitiswellknownthatPDiscontrolledbytheAutonomicNervousSystem(ANS),andANSresponsesarerelatedtoemotionalevents/stimuli,therelationshipbetweenemotionalstatesandPDisstillanopenissue.TheaimofthisstudyistodefinethestatisticalpropertiesofthePDsignal,tounderstanditsrelationwithANScorrelatessuchasHeartRateVariability(HRV)andrespiration(RESP),andtoexploreifPDcouldprovideinformationfortheevaluationofthepsychophysiologicalresponseofANStoaffectivetriggeringevents.ECG,RESP,andPDdatafrom13normalsubjectswererecordedduringamemoryrecallparadigm,andprocessedwithspectralandcross-spectralanalysis.OurresultsdemonstratethatvariabilityindicesextractedfromfastPDoscillations,notobservablethroughstandardcardiorespiratoryidentificationinthefrequencydomain,wouldbeabletodiscernpsychophysiologicalresponseselicitedbybasicemotionalstimuli.Astronglinearcouplingwasfoundbetweenthevariables,duetotheinfluenceofRESPonbothPDandHRVwithintheHighFrequency(HF)band,from0.15to0.45Hz.Mostimportantly,ourresultspointatPDfeaturesaspossiblecandidatesforcharacterizingbasicemotionalstimuli.
Characterization of affective states by pupillary dynamics and autonomic correlates, 2013-11-06.
Characterization of affective states by pupillary dynamics and autonomic correlates
Onorati, Francesco;Mauri, Maurizio;Russo, Vincenzo
2013-11-06
Abstract
Withtherecentadventofnewrecordingdevicesandaneasieraccesstosignalprocessingtools,researchersareincreasinglyexploringandstudyingthePupilDilation(PD)signal.Recently,numerousstudiespointedouttherelationsbetweenPDdynamicsandpsychophysiologicalstates.AlthoughitiswellknownthatPDiscontrolledbytheAutonomicNervousSystem(ANS),andANSresponsesarerelatedtoemotionalevents/stimuli,therelationshipbetweenemotionalstatesandPDisstillanopenissue.TheaimofthisstudyistodefinethestatisticalpropertiesofthePDsignal,tounderstanditsrelationwithANScorrelatessuchasHeartRateVariability(HRV)andrespiration(RESP),andtoexploreifPDcouldprovideinformationfortheevaluationofthepsychophysiologicalresponseofANStoaffectivetriggeringevents.ECG,RESP,andPDdatafrom13normalsubjectswererecordedduringamemoryrecallparadigm,andprocessedwithspectralandcross-spectralanalysis.OurresultsdemonstratethatvariabilityindicesextractedfromfastPDoscillations,notobservablethroughstandardcardiorespiratoryidentificationinthefrequencydomain,wouldbeabletodiscernpsychophysiologicalresponseselicitedbybasicemotionalstimuli.Astronglinearcouplingwasfoundbetweenthevariables,duetotheinfluenceofRESPonbothPDandHRVwithintheHighFrequency(HF)band,from0.15to0.45Hz.Mostimportantly,ourresultspointatPDfeaturesaspossiblecandidatesforcharacterizingbasicemotionalstimuli.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
