2016
DOI: 10.1016/j.mbs.2016.05.001
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The role of electrical coupling in generating and modulating oscillations in a neuronal network

Abstract: A simplified model of the crustacean gastric mill network is considered. Rhythmic activity in this network has largely been attributed to half center oscillations driven by mutual inhibition. We use mathematical modeling and dynamical systems theory to show that rhythmic oscillations in this network may also depend on, or even arise from, a voltage-dependent electrical coupling between one of the cells in the half-center network and a projection neuron that lies outside of the network. This finding uncovers a … Show more

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Cited by 4 publications
(2 citation statements)
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“…This may give a hint as to why the electrically coupled Si1/2/4 in Melibe can generate alternating bursts in curare, but not Si2 alone in Dendronotus. In a number of systems, electrical connections among inhibitory interneurons contribute to synchronization of activity [34][35][36][37][38][39]. Furthermore, modeling studies have pointed to complex roles of electrical coupling in rhythmogenesis [40,41].…”
Section: Different Neural Mechanisms For a Similar Motor Behaviormentioning
confidence: 99%
“…This may give a hint as to why the electrically coupled Si1/2/4 in Melibe can generate alternating bursts in curare, but not Si2 alone in Dendronotus. In a number of systems, electrical connections among inhibitory interneurons contribute to synchronization of activity [34][35][36][37][38][39]. Furthermore, modeling studies have pointed to complex roles of electrical coupling in rhythmogenesis [40,41].…”
Section: Different Neural Mechanisms For a Similar Motor Behaviormentioning
confidence: 99%
“…One of those models, the so-called half-center oscillator (HCO) was one of the first models to mechanistically explain rhythmogenesis [4850] and has been particularly influential. In this model, two non-rhythmic cells or groups of cells are coupled by mutual inhibitory connections that give rise to antiphasic rhythmicity in the presence of an excitatory drive [51]. …”
Section: Rhythm Generating Network and The Role Of Synaptic Inhibitionmentioning
confidence: 99%