期刊
ELIFE
卷 11, 期 -, 页码 -出版社
eLIFE SCIENCES PUBL LTD
DOI: 10.7554/eLife.75126
关键词
deep brain stimulation; machine learning; neuromodulation; basal ganglia; Human
类别
资金
- National Institutes of Health [R01NS110424]
- Bundesministerium fur Bildung und Forschung [FKZ01GQ1802]
- Deutsche Forschungsgemeinschaft [410169619, 424778381 - TRR 295]
This study developed an invasive brain signal decoding approach using intraoperative sensorimotor electrocorticography (ECoG) and subthalamic LFP to predict grip-force in Parkinson's disease patients undergoing DBS. The results showed that ECoG outperformed subthalamic LFP for accurate grip-force decoding, and gradient boosted decision trees (XGBOOST) showed the best performance. ECoG based decoding performance negatively correlated with motor impairment, highlighting the impact of PD pathophysiology on movement encoding capacity.
Brain signal decoding promises significant advances in the development of clinical brain computer interfaces (BCI). In Parkinson's disease (PD), first bidirectional BCI implants for adaptive deep brain stimulation (DBS) are now available. Brain signal decoding can extend the clinical utility of adaptive DBS but the impact of neural source, computational methods and PD pathophysiology on decoding performance are unknown. This represents an unmet need for the development of future neurotechnology. To address this, we developed an invasive brain-signal decoding approach based on intraoperative sensorimotor electrocorticography (ECoG) and subthalamic LFP to predict grip-force, a representative movement decoding application, in 11 PD patients undergoing DBS. We demonstrate that ECoG is superior to subthalamic LFP for accurate grip-force decoding. Gradient boosted decision trees (XGBOOST) outperformed other model architectures. ECoG based decoding performance negatively correlated with motor impairment, which could be attributed to subthalamic beta bursts in the motor preparation and movement period. This highlights the impact of PD pathophysiology on the neural capacity to encode movement vigor. Finally, we developed a connectomic analysis that could predict grip-force decoding performance of individual ECoG channels across patients by using their connectomic fingerprints. Our study provides a neurophysiological and computational framework for invasive brain signal decoding to aid the development of an individualized precision-medicine approach to intelligent adaptive DBS.
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