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• W4323315945 abstract "Deep brain stimulation (DBS) is a promising therapy for treatment-resistant major depressive disorder (MDD). MDD involves the dysfunction of a brain network that can exhibit complex nonlinear neural dynamics in multiple frequency bands. However, current open-loop and responsive DBS methods cannot track the complex multiband neural dynamics in MDD, leading to imprecise regulation of symptoms, variable treatment effects among patients, and high battery power consumption.Here, we develop a closed-loop brain-computer interface (BCI) system of predictive neuromodulation for treating MDD. We first use a biophysically plausible ventral anterior cingulate cortex (vACC)-dorsolateral prefrontal cortex (dlPFC) neural mass model of MDD to simulate nonlinear and multiband neural dynamics in response to DBS. We then use offline system identification to build a dynamic model that predicts the DBS effect on neural activity. We next use the offline identified model to design an online BCI system of predictive neuromodulation. The online BCI system consists of a dynamic brain state estimator and a model predictive controller. The brain state estimator estimates the MDD brain state from the history of neural activity and previously delivered DBS patterns. The predictive controller takes the estimated MDD brain state as the feedback signal and optimally adjusts DBS to regulate the MDD neural dynamics to therapeutic targets. We use the vACC-dlPFC neural mass model as a simulation testbed to test the BCI system and compare it with state-of-the-art open-loop and responsive DBS treatments of MDD.We demonstrate that our dynamic model accurately predicts nonlinear and multiband neural activity. Consequently, the predictive neuromodulation system accurately regulates the neural dynamics in MDD, resulting in significantly smaller control errors and lower DBS battery power consumption than open-loop and responsive DBS.Our results have implications for developing future precisely-tailored clinical closed-loop DBS treatments for MDD." @default.
• W4323315945 created "2023-03-07" @default.
• W4323315945 creator A5074480258 @default.
• W4323315945 creator A5078784100 @default.
• W4323315945 date "2023-03-06" @default.
• W4323315945 modified "2023-10-05" @default.
• W4323315945 title "Predictive neuromodulation of cingulo-frontal neural dynamics in major depressive disorder using a brain-computer interface system: A simulation study" @default.
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• W4323315945 doi "https://doi.org/10.3389/fncom.2023.1119685" @default.
• W4323315945 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36950505" @default.
• W4323315945 hasPublicationYear "2023" @default.
• W4323315945 type Work @default.
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• W4323315945 hasAuthorship W4323315945A5074480258 @default.
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