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48 results on '"Ni, Duanyu"'

22. Symptomatic responses elicited by electrical stimulation of the cingulate cortex: Study of a cohort of epileptic patients and literature review.

Author

Xue, Yansong, Yan, Hao, Hao, Guiliang, Gao, Ying, Wang, Xueyuan, Ni, Duanyu, Qiao, Liang, Shu, Wei, and Yu, Tao

Subjects
CINGULATE cortex, LITERATURE reviews, ELECTRIC stimulation, PEOPLE with epilepsy, EPILEPSY, BRAIN mapping, PREMOTOR cortex, VAGUS nerve
Abstract

Our understanding of cingulate cortex function is limited. As a method for locating the epileptogenic zone, direct electrical cortical stimulation (ECS) provides an opportunity to understand the functional localization of the cingulate cortex. This study aimed to learn more about the function of the cingulate cortex by analyzing a large body of data from our center and by reviewing existing literature on cortical mapping. We retrospectively analyzed the ECS data of 124 patients with drug‐resistant epilepsy who had undergone electrode implantation in the cingulate cortex. The standard stimulation parameters included a biphasic pulse and bipolar stimulation at 50 Hz. Furthermore, we reviewed existing studies on cingulate responses elicited by the ECS and compared them with our results. A total of 329 responses were evoked in 276 contacts using ECS. Of these, 196 were physiological functional responses, which included sensory, affective, autonomic, language, visual, vestibular, and motor responses, along with a few other sensations. Sensory, motor, vestibular, and visual responses were concentrated in the cingulate sulcus visual area (CSv). Furthermore, 133 epilepsy‐related responses were evoked, most of which were concentrated in the ventral cingulate cortex. No responses were evoked by 498 contacts. Furthermore, the comparison of our ECS results with those reported in 11 comprehensive reviews revealed that the cingulate cortex is involved in complicated functions. The cingulate cortex is involved in sensory, affective, autonomic, language, visual, vestibular, and motor functions. The CSv is an integrating node of sensory, motor, vestibular, and visual systems. [ABSTRACT FROM AUTHOR]

Published
2023
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29. Movement disorders and their stereotactic surgical treatment: a retrospective study of 5126 patients at a single clinical center over 22 years

Author

Li, Yongjie, primary, Qiao, Liang, additional, Du, Tao, additional, Li, Jianyu, additional, Zhu, Hongwei, additional, Hu, Yongsheng, additional, Yu, Tao, additional, Zhuang, Ping, additional, Zhang, Yuqing, additional, Zhang, Guojun, additional, Zhang, Xiaohua, additional, Ma, Kai, additional, Wang, Yunpeng, additional, Yan, Xiaoming, additional, Ni, Duanyu, additional, Li, Jiping, additional, Ni, Bing, additional, Shu, Wei, additional, Zhang, Xi, additional, Ren, Zhiwei, additional, Wang, Xueyuan, additional, Guo, Song, additional, and Lu, Guang, additional

Published
2021
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30. Fluid and White Matter Suppression Imaging and Voxel-Based Morphometric Analysis in Conventional Magnetic Resonance Imaging-Negative Epilepsy

Author

Sun, Ke, primary, Yu, Tao, additional, Yang, Dongju, additional, Ren, Zhiwei, additional, Qiao, Liang, additional, Ni, Duanyu, additional, Wang, Xueyuan, additional, Zhao, Yongxiang, additional, Chen, Xin, additional, Xiang, Jing, additional, Chen, Nan, additional, Gao, Runshi, additional, Yang, Kun, additional, Lin, Yicong, additional, Kober, Tobias, additional, and Zhang, Guojun, additional

Published
2021
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32. Movement Disorders and Their Stereotactic Surgical Treatment in China: A Retrospective Study of 5126 Patients at a Single Clinical Center Over 22 Years

Author

Li, Yongjie, primary, Qiao, Liang, additional, Du, Tao, additional, Li, Jianyu, additional, Zhu, Hongwei, additional, Hu, Yongsheng, additional, Yu, Tao, additional, Zhuang, Ping, additional, Zhang, Yuqing, additional, Zhang, Guojun, additional, Zhang, Xiaohua, additional, Ma, Kai, additional, Wang, Yunpeng, additional, Yan, Xiaoming, additional, Ni, Duanyu, additional, Li, Jiping, additional, Ni, Bing, additional, Shu, Wei, additional, Zhang, Xi, additional, Ren, Zhiwei, additional, Wang, Xueyuan, additional, Guo, Song, additional, and Lu, Guang, additional

Published
2021
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36. Altered amplitude of low‐frequency fluctuations and regional homogeneity in drug‐resistant epilepsy patients with vagal nerve stimulators under different current intensity

Author

Zhu, Jin, primary, Xu, Cuiping, additional, Zhang, Xi, additional, Qiao, Liang, additional, Wang, Xueyuan, additional, Zhang, Xiaohua, additional, Yan, Xiaoming, additional, Ni, Duanyu, additional, Yu, Tao, additional, Zhang, Guojun, additional, and Li, Yongjie, additional

Published
2020
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40. Altered amplitude of low‐frequency fluctuations and regional homogeneity in drug‐resistant epilepsy patients with vagal nerve stimulators under different current intensity.

Author

Zhu, Jin, Xu, Cuiping, Zhang, Xi, Qiao, Liang, Wang, Xueyuan, Zhang, Xiaohua, Yan, Xiaoming, Ni, Duanyu, Yu, Tao, Zhang, Guojun, and Li, Yongjie

Subjects
PEOPLE with epilepsy, FUNCTIONAL magnetic resonance imaging, NEURAL stimulation, HOMOGENEITY, TEMPORAL lobe, VOXEL-based morphometry, DIGITAL rectal examination
Abstract

Background: The mechanisms of vagal nerve stimulation (VNS) for the treatment of drug‐resistant epilepsy (DRE) remain unclear. This study aimed to measure spontaneous brain activity changes caused by VNS in DRE patients using resting‐state functional MRI (rs‐fMRI). Methods: The rs‐fMRI scans were performed in 16 DRE patients who underwent VNS surgery. Amplitude of low‐frequency fluctuations (ALFF) and regional homogeneity (ReHo) was generated and examined using paired sample t‐test to compare activity changes at different current intensity stage. The preoperative and postoperative ALFF/ReHo were also compared in eight responders (≥50% reduction of seizure frequency three months after surgery) and eight nonresponders using paired sample t‐test. Results: The significant ALFF and ReHo changes were shown in various cortical/subcortical structures in patients under different current intensity. After three months of stimulation, responders exhibited increased ALFF in the right middle cingulate gyrus, left parahippocampal gyrus, and left cerebellum, and increased ReHo in the right postcentral gyrus, left precuneus, left postcentral gyrus, right superior parietal gyrus, right precentral gyrus, and right superior frontal gyrus. Nonresponders exhibited decreased ALFF in the left temporal lobe and right cerebellum, increased ALFF in bilateral brainstem, decreased ReHo in bilateral lingual gyri, and increased ReHo in the right middle frontal gyrus and right anterior cingulate gyrus. Conclusions: The spontaneous neural activity changes in DRE patients caused by VNS were in an ongoing process. Increased ALFF/ReHo in frontal cortex, cingulate gyri, precentral/postcentral gyri, parahippocampal gyri, precuneus, parietal cortex, and cerebellum may implicate in VNS‐induced improvement in seizure frequency. [ABSTRACT FROM AUTHOR]

Published
2021
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45. [Explorations of epileptic network with cortico-cortical evoked potential]

Author

Huang, Chaoyang, Zhang, Guojun, Wang, Yuping, Ni, Duanyu, Yu, Tao, Chen, Nan, Du, Wei, and Ren, Zhiwei

Subjects
Brain Mapping, Epilepsy, Brain, Humans, Electrodes, Evoked Potentials, Electric Stimulation
Abstract

To evaluate the cortico-cortical evoked potential (CCEP) in exploring the network in epileptics.Two patients with intractable epilepsy underwent chronic intracranial electrode placement. According to the distribution of icta onset zones and the functional brain mapping, alternating 1 Hz electrical stimuli were delivered to the target electrodes. And CCEPs were recorded by averaging electrocorticograms time-locked to stimuli from subdural electrodes. Then icta onset zones, eloquent areas identified by electrical cortical mapping and CCEP distributions were compared.Typical CCEP responses were observed. The data of one patient was useful for investigating the connectivity associated with various brain networks while another patient was useful for evaluating the cortical excitability.The exploration of epileptic network is achieved through cortico-cortical evoked potential by investigating the connectivity associated with various brain networks and cortical excitability.

Published
2015

46. Surgical treatment for musicogenic epilepsy

Author

Zhang Guojun, Qiao Liang, Li Yongjie, Cai Lixin, and Ni Duanyu

Subjects
Male, Adolescent, medicine.medical_treatment, Electroencephalography, Single-photon emission computed tomography, Preoperative care, Epilepsy, Reflex, Neurosurgical Procedures, Temporal lobe, Epilepsy, Postoperative Complications, Monitoring, Intraoperative, Physiology (medical), Preoperative Care, Humans, Medicine, Ictal, Intraoperative Complications, Surgical treatment, Craniotomy, Tomography, Emission-Computed, Single-Photon, Brain Mapping, medicine.diagnostic_test, business.industry, General Medicine, Cerebral Arteries, medicine.disease, Temporal Lobe, Treatment Outcome, Acoustic Stimulation, Neurology, Anesthesia, Surgery, Neurology (clinical), business, Music
Abstract

We report a patient with medically intractable musicogenic epilepsy (ME) who was treated with surgery. Using the non-invasive methods of ictal and interictal electroencephalography (EEG), MRI, interictal single photon emission computed tomography and clinical manifestations, we first localized the musicogenic seizures (MS). The ictal onset zone was then further localized using intracranial EEG to the middle part of the left superior temporal gyrus. Surgical resection of the epileptogenic zone was then performed. The patient had two seizures within 2 weeks post-operatively, but has then had no seizures during the following year (Engel class II). The results suggest that patients who have medically intractable ME combined with unilateral ictal onset zones should be considered for the surgical treatment of epilepsy.

Published
2010

47. The threshold of cortical electrical stimulation for mapping sensory and motor functional areas

Author

Yu Tao, Qiao Liang, Du Wei, Ren Zhiwei, Zhang Guojun, Paul Fu, Ni Duanyu, and Cai Lixin

Subjects
Adult, Male, Time Factors, Adolescent, Sensation, Sensory system, Stimulation, Motor Activity, Functional neurosurgery, Functional brain, Young Adult, Physiology (medical), medicine, Humans, Cortical electrical stimulation, Surgical treatment, Retrospective Studies, Cerebral Cortex, Brain Mapping, business.industry, Electroencephalography, General Medicine, After discharge, medicine.disease, Prognosis, Epilepsy, Rolandic, humanities, Electric Stimulation, Rolandic epilepsy, Implantable Neurostimulators, Treatment Outcome, Neurology, Anesthesia, Sensory Thresholds, Linear Models, Surgery, Female, Perception, Neurology (clinical), business, Follow-Up Studies
Abstract

This study aimed to investigate the threshold of cortical electrical stimulation (CES) for functional brain mapping during surgery for the treatment of rolandic epilepsy. A total of 21 patients with rolandic epilepsy who underwent surgical treatment at the Beijing Institute of Functional Neurosurgery between October 2006 and March 2008 were included in this study. Their clinical data were retrospectively collected and analyzed. The thresholds of CES for motor response, sensory response, and after discharge production along with other threshold-related factors were investigated. The thresholds (mean ± standard deviation) for motor response, sensory response, and after discharge production were 3.48 ± 0.87, 3.86 ± 1.31, and 4.84 ± 1.38 mA, respectively. The threshold for after discharge production was significantly higher than those of both the motor and sensory response (both p < 0.05). A negative linear correlation was found between the threshold of after discharge production and disease duration. Using the CES parameters at a stimulation frequency of 50 Hz and a pulse width of 0.2 ms, the threshold of sensory and motor responses were similar, and the threshold of after discharge production was higher than that of sensory and motor response.

Published
2012

48. Surgery for perirolandic epilepsy: Epileptogenic cortex resection guided by chronic intracranial electroencephalography and electric cortical stimulation mapping

Author

Ni Duanyu, Yu Tao, Qiao Liang, Li Yongjie, Cai Lixin, and Zhang Guojun

Subjects
Adult, Male, medicine.medical_specialty, Adolescent, Electroencephalography, Brain mapping, Functional Laterality, Central nervous system disease, Epilepsy, Young Adult, Seizures, medicine, Humans, Epilepsy surgery, Ictal, Monitoring, Physiologic, Cerebral Cortex, Brain Mapping, Scalp, medicine.diagnostic_test, business.industry, Motor Cortex, General Medicine, medicine.disease, Electric Stimulation, Surgery, medicine.anatomical_structure, Treatment Outcome, Anesthesia, Female, Neurology (clinical), business, Cortical stimulation mapping
Abstract

Subject The objective of this study was to assess outcome with regard to seizure status and neurological function in patients undergoing resective surgery involving the perirolandic area. Method All 15 patients who underwent perirolandic cortical resection between October 2006 and September 2007 at the Comprehensive Epilepsy Centre of Beijing Xuanwu Hospital were included in the study. The locations of functional cortical areas, ictal onset zones and epileptogenic lesions were mapped by chronic intracranial EEG recordings and electric cortical stimulation. Seizure outcome was determined using the modified classification of Engel and colleagues. Motor and sensory deficits were monitored. Results At last follow-up 5 patients (33%) were in Engel class I, 4 (27%) were in class II, 3 (20%) were in class III, and 3 (20%) were in class IV. Nine patients suffered immediate functional deficits; 8 of these recovered completely within 2 weeks to 3 months of surgery. One had mild persistent loss of finger motor control. Conclusion After accurate presurgical evaluation using invasive recordings and functional brain mapping, epileptogenic cortical resection can give excellent results and few deficits in patients with perirolandic epilepsy.

Published
2008

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