Thepresentkinematicstudyaimedatdeterminingwhethertheobservationofarm/handgesturesperformedbyconspecificsaffectedanactionapparentlyunrelatedtothegesture(i.e.,reaching-grasping).In3experimentsweexaminedtheinfluenceofdifferentgesturesonactionkinematics.Wealsoanalyzedtheeffectsofwordscorrespondinginmeaningtothegestures,onthesameaction.InExperiment1,thetypeofgesture,valenceandactor’sgazeweretheinvestigatedvariablesParticipantsexecutedtheactionofreaching-graspingafterdiscriminatingwhetherthegesturesproducedbyaconspecificweremeaningfulornot.Themeaningfulgestureswererequestorsymbolicandtheirvalencewaspositiveornegative.Theywerepresentedbytheconspecificeitherblindfoldedornot.IncontrolExperiment2wesearchedforeffectsofthesolegaze,and,inExperiment3,theeffectsofthesamecharacteristicsofwordscorrespondinginmeaningtothegesturesandvisuallypresentedbytheconspecific.Typeofgesture,valence,andgazeinfluencedtheactualactionkinematics;theseeffectsweresimilar,butnotthesameasthoseinducedbywords.Weproposedthatthesignalactivatedaresponsewhichmadetheactualactionfasterfornegativevalenceofgesture,whereasforrequestsignalsandavailablegaze,theresponseinterferedwiththeactualactionmorethansymbolicsignalsandnotavailablegaze.Finally,weproposedtheexistenceofacommoncircuitinvolvedinthecomprehensionofgesturesandwordsandintheactivationofconsequentresponsestothem.
Type of gesture, valence and gaze modulate the influence of gesture on observer’s behaviour / DE STEFANI, Elisa; Innocenti, Alessandro; Claudio, Secchi; Veronica, Papa; Gentilucci, Maurizio. - In: FRONTIERS IN HUMAN NEUROSCIENCE. - ISSN 1662-5161. - 7:(2013), pp. 1-9. [10.3389/fnhum.2013.00542]
Type of gesture, valence and gaze modulate the influence of gesture on observer’s behaviour
DE STEFANI, ELISA;INNOCENTI, ALESSANDRO;GENTILUCCI, Maurizio
2013-01-01
Abstract
Thepresentkinematicstudyaimedatdeterminingwhethertheobservationofarm/handgesturesperformedbyconspecificsaffectedanactionapparentlyunrelatedtothegesture(i.e.,reaching-grasping).In3experimentsweexaminedtheinfluenceofdifferentgesturesonactionkinematics.Wealsoanalyzedtheeffectsofwordscorrespondinginmeaningtothegestures,onthesameaction.InExperiment1,thetypeofgesture,valenceandactor’sgazeweretheinvestigatedvariablesParticipantsexecutedtheactionofreaching-graspingafterdiscriminatingwhetherthegesturesproducedbyaconspecificweremeaningfulornot.Themeaningfulgestureswererequestorsymbolicandtheirvalencewaspositiveornegative.Theywerepresentedbytheconspecificeitherblindfoldedornot.IncontrolExperiment2wesearchedforeffectsofthesolegaze,and,inExperiment3,theeffectsofthesamecharacteristicsofwordscorrespondinginmeaningtothegesturesandvisuallypresentedbytheconspecific.Typeofgesture,valence,andgazeinfluencedtheactualactionkinematics;theseeffectsweresimilar,butnotthesameasthoseinducedbywords.Weproposedthatthesignalactivatedaresponsewhichmadetheactualactionfasterfornegativevalenceofgesture,whereasforrequestsignalsandavailablegaze,theresponseinterferedwiththeactualactionmorethansymbolicsignalsandnotavailablegaze.Finally,weproposedtheexistenceofacommoncircuitinvolvedinthecomprehensionofgesturesandwordsandintheactivationofconsequentresponsestothem.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
