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This virtual feedback generates artificial synaptic input to PD with timing determined by adjustable phase response dynamics that mimic average burst intervals generated by the lateral pyloric neuron (LP) in the intact pyloric network. Using this system, we measure network period variability dependence on the feedback element's phase response dynamics and find that a constant response interval confers minimum variability. We further find that these optimal dynamics are characteristic of the biological pyloric network. Building upon our previous theoretical work mapping the firing intervals in one cycle onto the firing intervals in the next cycle, we create a theoretical map of the distribution of all firing intervals in one cycle to the distribution of firing intervals in the next cycle. We then obtain an integral equation for a stationary self-consistent distribution of the network periods of the hybrid circuit, which can be solved numerically given the uncoupled pacemaker's distribution of intrinsic periods, the nature of the network's feedback, and the phase resetting characteristics of the pacemaker. The stationary distributions obtained in this manner are strongly predictive of the experimentally observed distributions of hybrid network period. This theoretical framework can provide insight into optimal feedback schemes for minimizing variability to increase reliability or maximizing variability to increase flexibility in central pattern generators driven by pacemakers with feedback. <\/jats:p>","DOI":"10.1152\/jn.00365.2015","type":"journal-article","created":{"date-parts":[[2015,9,3]],"date-time":"2015-09-03T03:04:01Z","timestamp":1441249441000},"page":"2741-2752","source":"Crossref","is-referenced-by-count":17,"title":["Feedback control of variability in the cycle period of a central pattern generator"],"prefix":"10.1152","volume":"114","author":[{"given":"Ryan M.","family":"Hooper","sequence":"first","affiliation":[{"name":"Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ruben A.","family":"Tikidji-Hamburyan","sequence":"additional","affiliation":[{"name":"Department of Cell Biology and Anatomy, Louisiana State University Health Sciences Center, New Orleans, Louisiana;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carmen C.","family":"Canavier","sequence":"additional","affiliation":[{"name":"Department of Cell Biology and Anatomy, Louisiana State University Health Sciences Center, New Orleans, Louisiana;"},{"name":"Neuroscience Center for Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana; and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Astrid A.","family":"Prinz","sequence":"additional","affiliation":[{"name":"Department of Biology, Emory University, Atlanta, Georgia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"24","reference":[{"key":"B1","unstructured":"Archila S. 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