Hauptseite > Publikationsdatenbank > Adaptive delivery of continuous and delayed feedback deep brain stimulation - a computational study > print

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024 7 _ |a 10.1038/s41598-019-47036-4
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100 1 _ |a Popovych, Oleksandr V.
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245 _ _ |a Adaptive delivery of continuous and delayed feedback deep brain stimulation - a computational study
260 _ _ |a [London]
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|b Macmillan Publishers Limited, part of Springer Nature
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520 _ _ |a Adaptive deep brain stimulation (aDBS) is a closed-loop method, where high-frequency DBS is turned on and off according to a feedback signal, whereas conventional high-frequency DBS (cDBS) is delivered permanently. Using a computational model of subthalamic nucleus and external globus pallidus, we extend the concept of adaptive stimulation by adaptively controlling not only continuous, but also demand-controlled stimulation. Apart from aDBS and cDBS, we consider continuous pulsatile linear delayed feedback stimulation (cpLDF), specifically designed to induce desynchronization. Additionally, we combine adaptive on-off delivery with continuous delayed feedback modulation by introducing adaptive pulsatile linear delayed feedback stimulation (apLDF), where cpLDF is turned on and off using pre-defined amplitude thresholds. By varying the stimulation parameters of cDBS, aDBS, cpLDF, and apLDF we obtain optimal parameter ranges. We reveal a simple relation between the thresholds of the local field potential (LFP) for aDBS and apLDF, the extent of the stimulation-induced desynchronization, and the integral stimulation time required. We find that aDBS and apLDF can be more efficient in suppressing abnormal synchronization than continuous simulation. However, apLDF still remains more efficient and also causes a stronger reduction of the LFP beta burst length. Hence, adaptive on-off delivery may further improve the intrinsically demand-controlled pLDF.
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700 1 _ |a Tass, Peter A.
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773 _ _ |a 10.1038/s41598-019-47036-4
|g Vol. 9, no. 1, p. 10585
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|y 2019
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