Synchronized Beta-Band Oscillations in a Model of the Globus Pallidus-Subthalamic Nucleus Network under External Input

dc.contributor.authorAhn, Sungwoo
dc.contributor.authorZauber, S. Elizabeth
dc.contributor.authorWorth, Robert M.
dc.contributor.authorRubchinsky, Lenold L.
dc.contributor.departmentDepartment of Mathematical Sciences, School of Scienceen_US
dc.date.accessioned2017-05-03T20:27:44Z
dc.date.available2017-05-03T20:27:44Z
dc.date.issued2016-12-20
dc.description.abstractHypokinetic symptoms of Parkinson's disease are usually associated with excessively strong oscillations and synchrony in the beta frequency band. The origin of this synchronized oscillatory dynamics is being debated. Cortical circuits may be a critical source of excessive beta in Parkinson's disease. However, subthalamo-pallidal circuits were also suggested to be a substantial component in generation and/or maintenance of Parkinsonian beta activity. Here we study how the subthalamo-pallidal circuits interact with input signals in the beta frequency band, representing cortical input. We use conductance-based models of the subthalamo-pallidal network and two types of input signals: artificially-generated inputs and input signals obtained from recordings in Parkinsonian patients. The resulting model network dynamics is compared with the dynamics of the experimental recordings from patient's basal ganglia. Our results indicate that the subthalamo-pallidal model network exhibits multiple resonances in response to inputs in the beta band. For a relatively broad range of network parameters, there is always a certain input strength, which will induce patterns of synchrony similar to the experimentally observed ones. This ability of the subthalamo-pallidal network to exhibit realistic patterns of synchronous oscillatory activity under broad conditions may indicate that these basal ganglia circuits are directly involved in the expression of Parkinsonian synchronized beta oscillations. Thus, Parkinsonian synchronized beta oscillations may be promoted by the simultaneous action of both cortical (or some other) and subthalamo-pallidal network mechanisms. Hence, these mechanisms are not necessarily mutually exclusive.en_US
dc.identifier.citationAhn, S., Zauber, S. E., Worth, R. M., & Rubchinsky, L. L. (2016). Synchronized Beta-Band Oscillations in a Model of the Globus Pallidus-Subthalamic Nucleus Network under External Input. Frontiers in Computational Neuroscience, 10, 134. http://doi.org/10.3389/fncom.2016.00134en_US
dc.identifier.urihttps://hdl.handle.net/1805/12461
dc.language.isoen_USen_US
dc.publisherFrontiersen_US
dc.relation.isversionof10.3389/fncom.2016.00134en_US
dc.relation.journalFrontiers in Computational Neuroscienceen_US
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 United States
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/us/
dc.sourcePMCen_US
dc.subjectBasal gangliaen_US
dc.subjectParkinson's diseaseen_US
dc.subjectSynchronizationen_US
dc.subjectOscillationsen_US
dc.subjectGlobus pallidusen_US
dc.subjectSubthalamic nucleusen_US
dc.titleSynchronized Beta-Band Oscillations in a Model of the Globus Pallidus-Subthalamic Nucleus Network under External Inputen_US
dc.typeArticleen_US
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