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@ARTICLE{Codianni:890401,
author = {Codianni, Marcello G. and Daun, Silvia and Rubin, Jonathan
E.},
title = {{T}he roles of ascending sensory signals and top-down
central control in the entrainment of a locomotor {CPG}},
journal = {Biological cybernetics},
volume = {114},
number = {6},
issn = {1432-0770},
address = {Heidelberg},
publisher = {Springer},
reportid = {FZJ-2021-00928},
pages = {533 - 555},
year = {2020},
abstract = {Previous authors have proposed two basic hypotheses about
the factors that form the basis of locomotor rhythms in
walking insects: sensory feedback only or sensory feedback
together with rhythmic activity of small neural circuits
called central pattern generators (CPGs). Here we focus on
the latter. Following this concept, to generate functional
outputs, locomotor control must feature both rhythm
generation by CPGs at the level of individual joints and
coordination of their rhythmic activities, so that all
muscles are activated in an appropriate pattern. This work
provides an in-depth analysis of an aspect of this
coordination process based on an existing network model of
stick insect locomotion. Specifically, we consider how the
control system for a single joint in the stick insect leg
may produce rhythmic output when subjected to ascending
sensory signals from other joints in the leg. In this work,
the core rhythm generating CPG component of the joint under
study is represented by a classical half-center oscillator
constrained by a basic set of experimental observations.
While the dynamical features of this CPG, including phase
transitions by escape and release, are well understood, we
provide novel insights about how these transition mechanisms
yield entrainment to the incoming sensory signal, how
entrainment can be lost under variation of signal strength
and period or other perturbations, how entrainment can be
restored by modulation of tonic top-down drive levels, and
how these factors impact the duty cycle of the motor
output.},
cin = {INM-3},
ddc = {000},
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 = {33289879},
UT = {WOS:000598085900001},
doi = {10.1007/s00422-020-00852-8},
url = {https://juser.fz-juelich.de/record/890401},
}