the phi complex: a dual-eeg study of social coordination
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The phi complex: a dual-EEG study of social coordination. Human Brain and Behavior Laboratory Center for Complex Systems & Brain Sciences. Florida Atlantic University. E. Tognoli, G.C. De Guzman, J. Lagarde, J.A.S. Kelso. A neurobehavioral view on social coordination. - PowerPoint PPT PresentationTRANSCRIPT
Human Brain and Behavior Human Brain and Behavior LaboratoryLaboratory
Center for Complex Systems & Brain Center for Complex Systems & Brain SciencesSciences
Florida Atlantic Florida Atlantic UniversityUniversity
The phi complex: a The phi complex: a dual-EEG study of dual-EEG study of social coordinationsocial coordination
E. Tognoli, G.C. De Guzman, J. Lagarde, J.A.S. KelsoE. Tognoli, G.C. De Guzman, J. Lagarde, J.A.S. Kelso
A neurobehavioral view on social coordinationA neurobehavioral view on social coordination
Social neurosciences: ways to measure how A’s behavior affects B’s Social neurosciences: ways to measure how A’s behavior affects B’s brain and behaviorbrain and behavior
Social behavior: emergent property of a group of people.
Temporal evolution is information-rich (mechanisms)
Measure how social interaction continuously affects the ongoing flow of behavior
produced by each individual
Assessment of individuals one at a time
Focus on the outcome of the interaction → no dynamics
Our approach: Our approach: Coordination DynamicsCoordination Dynamics
(Kelso, 1995) (Kelso, 1995)
A theoretical framework A theoretical framework for understanding for understanding
informationally coupledinformationally coupled self-organizing systemsself-organizing systems
Vision Vision No visionNo visionNo vision No vision
Dual-EEG recordingDual-EEG recording
Brain? identification of Brain? identification of neuromarkers in the neuromarkers in the
spectral domainspectral domain
How is coupling manipulated? How is coupling manipulated? Visual information exchange Visual information exchange
What real time behavior is What real time behavior is studied? Spontaneously studied? Spontaneously
uncoordinated and uncoordinated and coordinated rhythmic finger coordinated rhythmic finger
movements movements
5 7 9 11 135 7 9 11 13
Frequency (Hz)Frequency (Hz)
Comparison of EEG spectra before and Comparison of EEG spectra before and during vision: SOCIAL INTERACTIONduring vision: SOCIAL INTERACTION
Effect of social interaction, Effect of social interaction, effect of social coordinationeffect of social coordination
Comparison of EEG spectra in coordinated Comparison of EEG spectra in coordinated and uncoordinated trials: SOCIAL and uncoordinated trials: SOCIAL
COORDINATIONCOORDINATION
-20.1%-20.1% -30.44%-30.44%
Phi1, uncoordinated Phi1, uncoordinated trials: +12.1%trials: +12.1%
Intrinsic behaviorIntrinsic behavior
Phi2, coordinated Phi2, coordinated trials: +9.6%trials: +9.6%
Social behaviorSocial behavior
Intrinsic Behavior Coordination Behavior
M1M1
Somato-Somato-SensorySensory
(reafference)(reafference)
Dorsal Dorsal visual visual
pathwaypathway
Intrinsic Intrinsic motor motor
preparationpreparation
BehaviorsBehaviors
M1M1
Somato-Somato-SensorySensory
(endogenous activity (endogenous activity from observed action)from observed action)
Dorsal Dorsal visual visual
pathwaypathway
Mirror neuron Mirror neuron activityactivity
BehaviorsBehaviors
↓ ↓
↓↓
1↑ 2↑
Positive effect of social interactionsPositive effect of social interactions
Cognitive integrityCognitive integrity (eg. Bassuk et al., 1999; (eg. Bassuk et al., 1999; Holtzman et al., 2004; Holtzman et al., 2004;
Glei et al., 2005; Glei et al., 2005; BBélandéland et al., 2005) et al., 2005)
HealthHealth (Seeman, 1996; (Seeman, 1996;
Seeman & Crimmins, 2001)Seeman & Crimmins, 2001)
NeuroprotectionNeuroprotection (Rose, 1985; (Rose, 1985;
Saczynski et al., 2006; ; Bennett et al., 2006)Bennett et al., 2006)
Future directions Future directions
• Loss of social coordination Loss of social coordination competencies in elderly ?competencies in elderly ?– Increase allocation of resources to intrinsic Increase allocation of resources to intrinsic
motor function motor function
– Decrease informational coupling mediated Decrease informational coupling mediated by sensory lossby sensory loss
– What about the mirror neuron system?What about the mirror neuron system?
1
2