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@ARTICLE{Daun:864317,
author = {Daun, Silvia and Mantziaris, Charalampos and Tóth, Tibor
and Büschges, Ansgar and Rosjat, Nils},
title = {{U}nravelling intra- and intersegmental neuronal
connectivity between central pattern generating networks in
a multi-legged locomotor system},
journal = {PLOS ONE},
volume = {14},
number = {8},
issn = {1932-6203},
address = {San Francisco, California, US},
publisher = {PLOS},
reportid = {FZJ-2019-04124},
pages = {e0220767 -},
year = {2019},
abstract = {Animal walking results from a complex interplay of central
pattern generating networks (CPGs), local sensory signals
expressing position, velocity and forces generated in the
legs, and coordinating signals between neighboring legs. In
particular, the CPGs control the activity of motoneuron (MN)
pools which drive the muscles of the individual legs and are
thereby responsible for the generation of rhythmic leg
movements. The rhythmic activity of the CPGs as well as
their connectivity can be modified by the aforementioned
sensory signals. However, the precise nature of the
interaction between the CPGs and these sensory signals has
remained generally largely unknown. Experimental methods
aiming at finding out details of these interactions often
apply cholinergic agonists such as pilocarpine in order to
induce rhythmic activity in the CPGs. Using this general
approach, we removed the influence of sensory signals and
investigated the putative connections between CPGs
controlling the upward/downward movement in the different
legs of the stick insect. The experimental data, i.e. the
measured MN activities, underwent connectivity analysis
using Dynamic Causal Modelling (DCM). This method can
uncover the underlying coupling structure and strength
between pairs of segmental CPGs. For the analysis we set up
different coupling schemes (models) for DCM and compared
them using Bayesian Model Selection (BMS). Models with
contralateral connections in each segment and ipsilateral
connections on both sides, as well as the coupling from the
meta- to the ipsilateral prothoracic ganglion were preferred
by BMS to all other types of models tested. Moreover, the
intrasegmental coupling strength in the mesothoracic
ganglion was the strongest and most stable in all three
ganglia.},
cin = {INM-3},
ddc = {610},
cid = {I:(DE-Juel1)INM-3-20090406},
pnm = {572 - (Dys-)function and Plasticity (POF3-572)},
pid = {G:(DE-HGF)POF3-572},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:31386699},
UT = {WOS:000484997100036},
doi = {10.1371/journal.pone.0220767},
url = {https://juser.fz-juelich.de/record/864317},
}