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EnglishWiththerecentadventofnewrecordingdevicesandaneasieraccesstosignalprocessingtools,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.
| Titolo: | Characterization of affective states by pupillary dynamics and autonomic correlates |
| Autori: | Barbieri, Riccardo; Onorati, Francesco; Mainardi Luca; Mauri, Maurizio; Russo, Vincenzo |
| Rivista: | FRONTIERS IN NEUROENGINEERING |
| eISSN: | 1662-6443 |
| Data di pubblicazione: | 6-nov-2013 |
| Volume: | 6 |
| Fascicolo: | 9 |
| Digital Object Identifier (DOI): | 10.3389/fneng.2013.00009 |
| Nome editore: | Sea Frontiers Incorporated |
| Citazione: | Characterization of affective states by pupillary dynamics and autonomic correlates, 2013-11-06. |
| Appare nelle tipologie: | 01 - Articolo su rivista |
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