Non-verbalgroupdynamicsareoftenopaquetoaformalquantitativeanalysisofcommunication flow.In this context,ensemblemusicianscanbeareliablemodelofexpertgroupcoordination.Infact,bodily motion isacriticalcomponentofinter-musiciancoordinationandthuscouldbeusedasavaluableindex of sensorimotorcommunication.Herewemeasuredheadmovementkinematicsofanexpertquartetof musicians and,byapplyingGrangerCausalityanalysis,wenumericallydescribedthecausalitypatterns between participants.Wefoundaclearpositiverelationshipbetweentheamountofcommunicationand complexityofthescoresegment.Furthermore,wealsoappliedtemporalanddynamicalchangestothe musical score,knownbythe first violinonly.Theperturbationsweredevisedinordertoforce unidirectional communicationbetweentheleaderofthequartetandtheotherparticipants.Results show thatinthesesituations,unidirectionalinfluence fromtheleaderdecreased,thusimplyingthat effectiveleadershipmayrequirepriorsharingofinformationbetweenparticipants.Inconclusion,we could measuretheamountofinformation flow andsensorimotorgroupdynamicssuggestingthatthe fabric ofleadershipisnotbuiltuponexclusiveinformationknowledgebutratheronsharingit.
Sensorimotor communication in professional quartets
Antonio Camurri;
2014
Abstract
Non-verbalgroupdynamicsareoftenopaquetoaformalquantitativeanalysisofcommunication flow.In this context,ensemblemusicianscanbeareliablemodelofexpertgroupcoordination.Infact,bodily motion isacriticalcomponentofinter-musiciancoordinationandthuscouldbeusedasavaluableindex of sensorimotorcommunication.Herewemeasuredheadmovementkinematicsofanexpertquartetof musicians and,byapplyingGrangerCausalityanalysis,wenumericallydescribedthecausalitypatterns between participants.Wefoundaclearpositiverelationshipbetweentheamountofcommunicationand complexityofthescoresegment.Furthermore,wealsoappliedtemporalanddynamicalchangestothe musical score,knownbythe first violinonly.Theperturbationsweredevisedinordertoforce unidirectional communicationbetweentheleaderofthequartetandtheotherparticipants.Results show thatinthesesituations,unidirectionalinfluence fromtheleaderdecreased,thusimplyingthat effectiveleadershipmayrequirepriorsharingofinformationbetweenparticipants.Inconclusion,we could measuretheamountofinformation flow andsensorimotorgroupdynamicssuggestingthatthe fabric ofleadershipisnotbuiltuponexclusiveinformationknowledgebutratheronsharingit.
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