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一类具有时滞的帕金森病模型异常振荡的分岔分析
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作者 曾巧云 郑艳红 易丹 《延边大学学报(自然科学版)》 CAS 2023年第3期230-235,共6页
研究了一个拓展的具有时滞的丘脑底核-苍白球网络模型存在振荡的理论条件,并利用Routh-Hurwitz定理推导了该模型在平衡点的稳定性.数值模拟验证表明,所得的理论条件成立,且该模型产生分岔的临界点与理论的分岔点吻合度较高.当神经元集... 研究了一个拓展的具有时滞的丘脑底核-苍白球网络模型存在振荡的理论条件,并利用Routh-Hurwitz定理推导了该模型在平衡点的稳定性.数值模拟验证表明,所得的理论条件成立,且该模型产生分岔的临界点与理论的分岔点吻合度较高.当神经元集群间的传输时滞较小时,系统处于健康状态;当时滞较大时,系统会发生过度的beta振荡,即系统会处于帕金森病状态;神经元集群间的连接权值也可对系统的振荡产生影响. 展开更多
关键词 帕金森病模型 振荡 HOPF分岔 时滞 连接权值 STN-GP网络
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Update on deep brain stimulation in Parkinson’s disease
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作者 Daniel Martinez-Ramirez Wei Hu +2 位作者 Alberto R.Bona Michael S.Okun Aparna Wagle Shukla 《Translational Neurodegeneration》 SCIE CAS 2015年第1期84-91,共8页
Deep brain stimulation(DBS)is considered a safe and well tolerated surgical procedure to alleviate Parkinson’s disease(PD)and other movement disorders symptoms along with some psychiatric conditions.Over the last few... Deep brain stimulation(DBS)is considered a safe and well tolerated surgical procedure to alleviate Parkinson’s disease(PD)and other movement disorders symptoms along with some psychiatric conditions.Over the last few decades DBS has been shown to provide remarkable therapeutic effect on carefully selected patients.Although its precise mechanism of action is still unknown,DBS improves motor functions and therefore quality of life.To date,two main targets have emerged in PD patients:the globus pallidus pars interna and the subthalamic nucleus.Two other targets,the ventralis intermedius and zona incerta have also been selectively used,especially in tremor-dominant PD patients.The main indications for PD DBS have traditionally been motor fluctuations,debilitating medication induced dyskinesias,unpredictable“off time”state,and medication refractory tremor.Medication refractory tremor and intolerable dyskinesia are potential palliative indications.Besides aforementioned targets,the brainstem pedunculopontine nucleus(PPN)is under investigation for the treatment of ON-state freezing of gait and postural instability.In this article,we will review the most recent literature on DBS therapy for PD,including cutting-edge advances and data supporting the role of DBS in advanced neural-network modulation. 展开更多
关键词 Movement disorders subthalamic nucleus Globus pallidus Neural network Brain modulation CLOSED-LOOP
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