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Resting-State Pallidal-Cortical Oscillatory Couplings in Patients With Predominant Phasic and Tonic Dystonia

Overview of attention for article published in Frontiers in Neurology, May 2018
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Title
Resting-State Pallidal-Cortical Oscillatory Couplings in Patients With Predominant Phasic and Tonic Dystonia
Published in
Frontiers in Neurology, May 2018
DOI 10.3389/fneur.2018.00375
Pubmed ID
Authors

Fusako Yokochi, Kenji Kato, Hirokazu Iwamuro, Tsutomu Kamiyama, Katsuo Kimura, Akihiro Yugeta, Ryoichi Okiyama, Makoto Taniguchi, Satoko Kumada, Junichi Ushiba

Abstract

Pallidal deep brain stimulation (DBS) improves the symptoms of dystonia. The improvement processes of dystonic movements (phasic symptoms) and tonic symptoms differ. Phasic symptoms improve rapidly after starting DBS treatment, but tonic symptoms improve gradually. This difference implies distinct neuronal mechanisms for phasic and tonic symptoms in the underlying cortico-basal ganglia neuronal network. Phasic symptoms are related to the pallido-thalamo-cortical pathway. The pathway related to tonic symptoms has been assumed to be different from that for phasic symptoms. In the present study, local field potentials of the globus pallidus internus (GPi) and globus pallidus externus (GPe) and electroencephalograms from the motor cortex (MCx) were recorded in 19 dystonia patients to analyze the differences between the two types of symptoms. The 19 patients were divided into two groups, 10 with predominant phasic symptoms (phasic patients) and 9 with predominant tonic symptoms (tonic patients). To investigate the distinct features of oscillations and functional couplings across the GPi, GPe, and MCx by clinical phenotype, power and coherence were calculated over the delta (2-4 Hz), theta (5-7 Hz), alpha (8-13 Hz), and beta (14-35 Hz) frequencies. In phasic patients, the alpha spectral peaks emerged in the GPi oscillatory activities, and alpha GPi coherence with the GPe and MCx was higher than in tonic patients. On the other hand, delta GPi oscillatory activities were prominent, and delta GPi-GPe coherence was significantly higher in tonic than in phasic patients. However, there was no significant delta coherence between the GPi/GPe and MCx in tonic patients. These results suggest that different pathophysiological cortico-pallidal oscillations are related to tonic and phasic symptoms.

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Geographical breakdown

Country Count As %
Unknown 32 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 6 19%
Student > Master 4 13%
Researcher 4 13%
Student > Doctoral Student 2 6%
Student > Postgraduate 2 6%
Other 2 6%
Unknown 12 38%
Readers by discipline Count As %
Medicine and Dentistry 7 22%
Neuroscience 5 16%
Environmental Science 2 6%
Engineering 2 6%
Unknown 16 50%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 02 June 2018.
All research outputs
#20,518,141
of 23,085,832 outputs
Outputs from Frontiers in Neurology
#9,000
of 11,993 outputs
Outputs of similar age
#290,535
of 331,175 outputs
Outputs of similar age from Frontiers in Neurology
#238
of 308 outputs
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