Human Brain and Behavior Human Brain and Behavior LaboratoryLaboratoryCenter for Complex Center for Complex

Systems Systems and Brain Sciencesand Brain Sciences

tognoli@ccs.fau.edutognoli@ccs.fau.edu

http://www.ccs.fau.edu/hbbl.html http://www.ccs.fau.edu/hbbl.html

EEG Coordination DynamicsEEG Coordination Dynamics

Neuromarkers of Social Neuromarkers of Social CoordinationCoordination

E. TognoliE. Tognoli

?Banerjee et al., in progress

EEG & Coordination Dynamics

Time(s) in EEG

-µV

700 ms

* * * * * * * * *

““real”- timereal”- time

““recursive”- timerecursive”- time

Transitions and stability[…]

Transitions and stability

-µV

700 ms

Behavior: “real”- timeBehavior: “real”- time

EEG: “recursive”- timeEEG: “recursive”- time

Transitions and stability

Analyze EEG in “real” time?

Analyze EEG in “real” time?

Analyze EEG in “real” time?

Steady-states

Entrained (patterned) Dynamics

Evoked responses

Spontaneous oscillations

Entrained responses

Social CoordinationSocial Coordination

t=20-40st=20-40s t=40-60st=40-60st=0-20st=0-20s

Collective behavior

Spatio-spectral patterns

16.384 sec

Fs: 1000 HzSamples: 16384

Spectral Resolution: 0.06Hz

Space (scalp surface): 2D Frequency: 1DAmplitude: 1D

1↑2↑

Intrinsic Behavior Coordination Behavior

M1M1

Intrinsic Intrinsic motor motor

preparationpreparation

M1M1

Mirror neuron Mirror neuron activityactivity

1

SELF

2

OTHER

+

=

ERS

ERD

ERD

trouble

Coupling between brains

Summary• EEG coordination dynamics:

– Develop “real” time analysis of brain~behavior

– Employ robust entrained responses

• Social Coordination dynamics:– Phi complex: for coordinated~uncoordinated

behaviors– Transitions/loss of stability: changes in

dynamics– Gating the influence of self and other on

ongoing behavior

Study coordinated with: