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Tong X, Wang J, Qin L, Zhou J, Guan Y, Zhai F, Teng P, Wang M, Li T, Wang X, Luan G. Analysis of power spectrum and phase lag index changes following deep brain stimulation of the anterior nucleus of the thalamus in patients with drug-resistant epilepsy: A retrospective study. Seizure 2022; 96:6-12. [PMID: 35042005 DOI: 10.1016/j.seizure.2022.01.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 12/18/2021] [Accepted: 01/07/2022] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVES The mechanisms underlying the anterior nucleus of the thalamus (ANT) deep brain stimulation (DBS) for the treatment of drug-resistant epilepsy (DRE) have not been fully explored. The present study aimed to measure the changes in whole-brain activity generated by ANT DBS using interictal electroencephalography (EEG). MATERIALS AND METHODS Interictal EEG signals were retrospectively collected in 20 DRE patients who underwent ANT DBS surgery. Patients were classified as responders or non-responders depending on their response to ANT DBS treatment. The power spectrum (PS) and Phase Lag Index (PLI) were determined and data analyzed using a paired sample t-test to evaluate activity differences between pre-and-post-treatment on different frequency categories. Student's t-test, Mann-Whitney test (non-parametric test) and Fisher exact test were used to compare groups in terms of clinical variables and EEG metrics. P values < 0.05 were considered statistically significant, and FDR-corrected values were used for multiple testing. RESULTS PS analysis revealed that whole-brain spectral power had a significant decrease in the beta (p = 0.005) and gamma (p = 0.037) bands following ANT DBS treatment in responders. The analysis of scalp topographic images of all patients showed that ANT DBS decreases PS in the beta band at the F3, F7 and Cz electrode sites. The findings indicated a decrease in PS in the gamma band at the Fp2, F3, Cz, T3, T5 and Oz electrode sites. After ANT DBS treatment, PLI analysis showed a significant decrease in PLI between Fp1 and T3 in the gamma band in responders. CONCLUSION The findings showed that ANT DBS induces a decrease in power in the left frontal lobe, left temporal lobe and midline areas in the beta and gamma bands. Lower whole-brain power in the beta and gamma bands can be used as biomarkers for a favorable therapeutic response to ANT DBS, and decreased synchronization between the left frontal pole and temporal lobe in the gamma band can also be used as a biomarker for effective clinical stimulation to guide postoperative programming.
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Affiliation(s)
- Xuezhi Tong
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
| | - Jing Wang
- Department of Neurology, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
| | - Lang Qin
- McGovern Institute for Brain Research, Peking University, Beijing 100093, China; Center for MRI Research, Peking University, Beijing 100093, China
| | - Jian Zhou
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
| | - Yuguang Guan
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
| | - Feng Zhai
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
| | - Pengfei Teng
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
| | - Mengyang Wang
- Department of Neurology, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
| | - Tianfu Li
- Department of Neurology, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China; Beijing Key Laboratory of Epilepsy, Beijing 100093, China
| | - Xiongfei Wang
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China; Beijing Key Laboratory of Epilepsy, Beijing 100093, China; Epilepsy Institute, Beijing Institute for Brain Disorders, Beijing 100093, China
| | - Guoming Luan
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China; Beijing Key Laboratory of Epilepsy, Beijing 100093, China; Epilepsy Institute, Beijing Institute for Brain Disorders, Beijing 100093, China
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Dong Y, Xu R, Zhang Y, Shi Y, Du K, Jia T, Wang J, Wang F. Different Frequency Bands in Various Regions of the Brain Play Different Roles in the Onset and Wake-Sleep Stages of Infantile Spasms. Front Pediatr 2022; 10:878099. [PMID: 35633963 PMCID: PMC9135356 DOI: 10.3389/fped.2022.878099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 04/20/2022] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE The study aimed to identify the signatures of brain networks using electroencephalogram (EEG) in patients with infantile spasms (IS). METHODS Scalp EEGs of subjects with IS were prospectively collected in the first year of life (n = 8; age range 4-8 months; 3 males, 5 females). Ten minutes of ictal and interictal EEGs were clipped and filtered into different EEG frequency bands. The values of each pair of EEG channels were directly compared between ictal with interictal onsets and the sleep-wake phase to calculate IS brain network attributes: characteristic path length (CPL), node degree (ND), clustering coefficient (CC), and betweenness centrality (BC). RESULTS CPL, ND, and CC of the fast waves decreased while BC increased. CPL and BC of the slow waves decreased, while ND and CC increased during the IS ictal onset (P < 0.05). CPL of the alpha decreased, and BC increased during the waking time (P < 0.05). CONCLUSION The transmission capability of the fast waves, the local connectivity, and the defense capability of the slow waves during the IS ictal onset were enhanced. The alpha band played the most important role in both the global and local networks during the waking time. These may represent the brain network signatures of IS.
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Affiliation(s)
- Yan Dong
- Henan Provincial Key Laboratory of Child Brain Injury, Department of Pediatrics, Third Associated Hospital of Zheng Zhou University, Zhengzhou, China
| | - Ruijuan Xu
- Henan Provincial Key Laboratory of Child Brain Injury, Department of Pediatrics, Third Associated Hospital of Zheng Zhou University, Zhengzhou, China
| | - Yaodong Zhang
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Henan Neurodevelopment Engineering Research Center for Children, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - Yali Shi
- Henan Provincial Key Laboratory of Child Brain Injury, Department of Pediatrics, Third Associated Hospital of Zheng Zhou University, Zhengzhou, China
| | - Kaixian Du
- Henan Provincial Key Laboratory of Child Brain Injury, Department of Pediatrics, Third Associated Hospital of Zheng Zhou University, Zhengzhou, China
| | - Tianming Jia
- Henan Provincial Key Laboratory of Child Brain Injury, Department of Pediatrics, Third Associated Hospital of Zheng Zhou University, Zhengzhou, China
| | - Jun Wang
- Department of Children's Rehabilitation, Third Associated Hospital of Zheng Zhou University, Zhengzhou, China
| | - Fang Wang
- Department of Medical Record Management, Third Associated Hospital of Zheng Zhou University, Zhengzhou, China
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