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The Effect of Botulinum Toxin on Network Connectivity in Cervical Dystonia: Lessons from Magnetoencephalography Cover

The Effect of Botulinum Toxin on Network Connectivity in Cervical Dystonia: Lessons from Magnetoencephalography

Open Access
|Nov 2017

Figures & Tables

Table 1

Patient Demographics and Clinical Characteristics

Patient 1Patient 2Patient 3Patient 4
Age (years)54615333
GenderMaleFemaleFemaleFemale
Disease duration (years)32111
DiagnosisCervical dystoniaCervical dystoniaCervical dystoniaCervical dystonia
PharmacotherapyBotulinum toxin type ABotulinum toxin type ABotulinum toxin type ABotulinum toxin type A
Description of cervical dystonia“Right laterocollis with right shoulder elevation”“Left dystonic neck, left torticollis, right laterocollis”“Slight right laterocollis and slight anterocollis”“Right torticollis, mild anterocollis and mild right laterocollis with right shoulder elevation”
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Figure 1

Patient 1, MEG Images Pre and Post Botulinum Toxin. Regions of the brain that are different pre (green) and post (red) medication in this subject who took botulinum toxin. Red areas indicate where more coherent activity was seen after treatment. Green areas had higher coherence prior to treatment.

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Figure 2

Difference in Coherence between Patients and Controls, Pre and Post-Botulinum Toxin. (A) The biggest difference in coherence seen in the fronto-striatal, occipito-striatal, parieto-striatal, and temporo- striatal areas in controls compared with patients. (B) With botulinum toxin, there is an increase in coherence overall in the above-mentioned pathways in controls compared with patients. (C) Comparing cervical dystonia patients, coherence networks increased after medication, especially in the frontal–frontal, frontal–parietal, frontal–temporal, and cingulate–occipital pathways.

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Figure 3

Difference in Coherence between Patients and Controls, Pre and Post Botulinum Toxin, using BH Correction. Using Benjamini–Hochberg adjustment, significant differences in coherence between patients and controls were seen in the following regions: left cingulate gyrus–left putamen, left putamen–right inferior frontal gyrus, left putamen–right inferior occipital gyrus. With botulinum toxin, additionally, a significant difference was seen in the left putamen–right superior parietal gyrus.

DOI: https://doi.org/10.5334/tohm.348 | Journal eISSN: 2160-8288
Language: English
Submitted on: Aug 10, 2017
Accepted on: Oct 23, 2017
Published on: Nov 10, 2017
Published by: Columbia University Libraries/Information Services
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2017 Abhimanyu Mahajan, Abdullah Alshammaa, Andrew Zillgitt, Susan M. Bowyer, Peter LeWitt, Patricia Kaminski, Christos Sidiropoulos, published by Columbia University Libraries/Information Services
This work is licensed under the Creative Commons License.