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• W4366992869 abstract "Background Subthalamic deep brain stimulation (DBS) is an established clinical therapy, but an anatomically clear definition of the underlying neural target(s) of the stimulation remains elusive. Patient-specific models of DBS are commonly used tools in the search for stimulation targets, and recent iterations of those models are focused on characterizing the brain connections that are activated by DBS. Objective The goal of this study was to quantify axonal pathway activation in the subthalamic region from DBS at different electrode locations and stimulation settings. Materials and Methods We used an anatomically and electrically detailed computational model of subthalamic DBS to generate recruitment curves for eight different axonal pathways of interest, at three generalized DBS electrode locations in the subthalamic nucleus (STN) (ie, central STN, dorsal STN, posterior STN). These simulations were performed with three levels of DBS electrode localization uncertainty (ie, 0.5 mm, 1.0 mm, 1.5 mm). Results The recruitment curves highlight the diversity of pathways that are theoretically activated with subthalamic DBS, in addition to the dependence of the stimulation location and parameter settings on the pathway activation estimates. The three generalized DBS locations exhibited distinct pathway recruitment curve profiles, suggesting that each stimulation location would have a different effect on network activity patterns. We also found that the use of anodic stimuli could help limit activation of the internal capsule relative to other pathways. However, incorporating realistic levels of DBS electrode localization uncertainty in the models substantially limits their predictive capabilities. Conclusions Subtle differences in stimulation location and/or parameter settings can impact the collection of pathways that are activated during subthalamic DBS." @default.
• W4366992869 created "2023-04-27" @default.
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• W4366992869 date "2023-04-01" @default.
• W4366992869 modified "2023-10-10" @default.
• W4366992869 title "Model-Based Analysis of Pathway Recruitment During Subthalamic Deep Brain Stimulation" @default.
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• W4366992869 doi "https://doi.org/10.1016/j.neurom.2023.02.084" @default.
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