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@ARTICLE{Dahmen:885730,
author = {Dahmen, David and Layer, Moritz and Deutz, Lukas and
Dąbrowska, Paulina Anna and Voges, Nicole and von Papen,
Michael and Brochier, Thomas and Riehle, Alexa and Diesmann,
Markus and Grün, Sonja and Helias, Moritz},
title = {{L}ong-range coordination patterns in cortex change with
behavioral context},
reportid = {FZJ-2020-04042},
year = {2020},
abstract = {Cortical connectivity mostly stems from local axonal
arborizations, suggesting coordination is strongest between
nearby neurons in the range of a few hundred micrometers.
Yet multi-electrode recordings of resting-state activity in
macaque motor cortex show strong positive and negative
spike-count covariances between neurons that are millimeters
apart. Here we show that such covariance patterns naturally
arise in balanced network models operating close to an
instability where neurons interact via indirect connections,
giving rise to long-range correlations despite short-range
connections. A quantitative theory explains the observed
shallow exponential decay of the width of the covariance
distribution at long distances. Long-range cooperation via
this mechanism is not imprinted in specific connectivity
structures but rather results dynamically from the network
state. As a consequence, neuronal coordination patterns are
not static but can change in a state-dependent manner, which
we demonstrate by comparing different behavioral epochs of a
reach-to-grasp experiment.},
cin = {INM-6 / IAS-6 / INM-10},
cid = {I:(DE-Juel1)INM-6-20090406 / I:(DE-Juel1)IAS-6-20130828 /
I:(DE-Juel1)INM-10-20170113},
pnm = {571 - Connectivity and Activity (POF3-571) / 574 - Theory,
modelling and simulation (POF3-574) / MSNN - Theory of
multi-scale neuronal networks (HGF-SMHB-2014-2018) / HBP
SGA2 - Human Brain Project Specific Grant Agreement 2
(785907) / HBP SGA3 - Human Brain Project Specific Grant
Agreement 3 (945539)},
pid = {G:(DE-HGF)POF3-571 / G:(DE-HGF)POF3-574 /
G:(DE-Juel1)HGF-SMHB-2014-2018 / G:(EU-Grant)785907 /
G:(EU-Grant)945539},
typ = {PUB:(DE-HGF)25},
doi = {10.1101/2020.07.15.205013},
url = {https://juser.fz-juelich.de/record/885730},
}