OBJECTIVE: Deep brain stimulation in the globus pallidus internus (GPi) is used to alleviate the motor symptoms of both Parkinson's disease (PD) and dystonia. We tested the hypothesis that PD and dystonia are characterized by different temporal patterns of synchronized oscillations in the GPi, and that the dopaminergic loss in PD makes the basal ganglia more susceptible to oscillatory activity. METHODS: Neuronal firing and local field potentials (LFPs) were simultaneously recorded from the GPi in four PD patients and seven dystonia patients using two independently driven microelectrodes. RESULTS: In the PD patients, beta (11-30 Hz) oscillations were observed in the LFPs and the firing activity of ∼30% of the neurons was significantly coherent with the LFP. However, in the dystonia group, the peak frequency of LFP oscillations was lower (8-20 Hz) and there was a significantly smaller proportion of neurons (∼10%) firing in coherence with the LFP (P<0.001). CONCLUSIONS: These findings suggest that synchronization of neuronal firing with LFP oscillations is a more prominent feature in PD than in dystonia. SIGNIFICANCE: This study adds to the growing evidence that dopaminergic loss in PD may increase the sensitivity of the basal ganglia network to rhythmic oscillatory inputs.
OBJECTIVE: Deep brain stimulation in the globus pallidus internus (GPi) is used to alleviate the motor symptoms of both Parkinson's disease (PD) and dystonia. We tested the hypothesis that PD and dystonia are characterized by different temporal patterns of synchronized oscillations in the GPi, and that the dopaminergic loss in PD makes the basal ganglia more susceptible to oscillatory activity. METHODS: Neuronal firing and local field potentials (LFPs) were simultaneously recorded from the GPi in four PDpatients and seven dystoniapatients using two independently driven microelectrodes. RESULTS: In the PDpatients, beta (11-30 Hz) oscillations were observed in the LFPs and the firing activity of ∼30% of the neurons was significantly coherent with the LFP. However, in the dystonia group, the peak frequency of LFP oscillations was lower (8-20 Hz) and there was a significantly smaller proportion of neurons (∼10%) firing in coherence with the LFP (P<0.001). CONCLUSIONS: These findings suggest that synchronization of neuronal firing with LFP oscillations is a more prominent feature in PD than in dystonia. SIGNIFICANCE: This study adds to the growing evidence that dopaminergic loss in PD may increase the sensitivity of the basal ganglia network to rhythmic oscillatory inputs.
Authors: Nicole C Swann; Coralie de Hemptinne; Svjetlana Miocinovic; Salman Qasim; Sarah S Wang; Nathan Ziman; Jill L Ostrem; Marta San Luciano; Nicholas B Galifianakis; Philip A Starr Journal: J Neurosci Date: 2016-06-15 Impact factor: 6.167
Authors: Robert S Eisinger; Jackson N Cagle; Enrico Opri; Jose Alcantara; Stephanie Cernera; Kelly D Foote; Michael S Okun; Aysegul Gunduz Journal: J Neurosci Date: 2020-02-27 Impact factor: 6.167
Authors: Doris D Wang; Coralie de Hemptinne; Svjetlana Miocinovic; Jill L Ostrem; Nicholas B Galifianakis; Marta San Luciano; Philip A Starr Journal: J Neurosci Date: 2018-04-16 Impact factor: 6.167
Authors: Stefano Ferrea; Stefan J Groiss; Saskia Elben; Christian J Hartmann; Steve B Dunnett; Anne Rosser; Carsten Saft; Alfons Schnitzler; Jan Vesper; Lars Wojtecki Journal: J Neurol Date: 2018-05-03 Impact factor: 4.849
Authors: M Alam; M K Sanghera; K Schwabe; G Lütjens; X Jin; J Song; C von Wrangel; R M Stewart; J Jankovic; R G Grossman; O Darbin; Joachim K Krauss Journal: J Neural Transm (Vienna) Date: 2015-11-23 Impact factor: 3.575
Authors: Doris D Wang; Coralie de Hemptinne; Svjetlana Miocinovic; Salman E Qasim; Andrew M Miller; Jill L Ostrem; Nicholas B Galifianakis; Marta San Luciano; Philip A Starr Journal: Neurobiol Dis Date: 2016-02-14 Impact factor: 5.996