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The dynamic response of neural activity to deep brain stimulation

机译:神经活动对脑深部刺激的动态响应

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Parkinson's disease (PD) is a progressive, neurodegenerative disorder, characterized by hallmark motor symptoms. Deep brain stimulation (DBS) has been used to treat advanced PD successfully. Previous studies have found that the DBS also has an effect on the electrophysiological activity of the deep brain nucleus while alleviate the PD symptoms. Here, in an attempt to gain a greater understanding of dynamic response of neural activity during subthalamic nucleus (STN) DBS for PD, local filed potentials (LFPs) were recorded from the STN during closed-loop DBS. The time frequency analysis methods short-time Fourier transform and continuous wavelet transform were used to detect the dynamic change of LFPs and the related factors which affect the length of stimulation time. The results suggest that both alpha activity and beta activity are dynamic change with electric stimulation. The delay time of DBS inhibit beta activity is about 160 ms. These results also demonstrated that the length of stimulation time are associated with the baseline amplitude, the average amplitude and the peak amplitude of beta activity. Studying the response of neural activity to electrical stimulation can reveal the electrophysiological mechanisms of DBS. Furthermore, it can improve the treatment of closed-loop DBS for PD and promote the development of intelligent neural modulation.
机译:帕金森氏病(PD)是一种进行性神经退行性疾病,特征在于明显的运动症状。深部脑刺激(DBS)已成功用于治疗晚期PD。先前的研究发现,DBS在减轻PD症状的同时,还对深部大脑核的电生理活性有影响。在这里,为了进一步了解丘脑下丘脑核(STN)DBS期间神经活动的动态响应,在闭环DBS期间从STN记录了局部电场电位(LFP)。利用短时傅立叶变换和连续小波变换的时频分析方法,检测了LFPs的动态变化及影响刺激时间的因素。结果表明,α活性和β活性均随电刺激而动态变化。 DBS抑制beta活性的延迟时间约为160毫秒。这些结果还表明,刺激时间的长度与β活性的基线幅度,平均幅度和峰值幅度有关。研究神经活动对电刺激的反应可以揭示DBS的电生理机制。此外,它可以改善PD对闭环DBS的治疗,并促进智能神经调制的发展。

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