在电解损伤后对多电极阵列的物质损伤在噪音中
Alice Tor1, Stephen E Clarke2,3, Iliana E Bray1
1Electrical Engineering Department, Stanford University.
bioRxiv : the preprint server for biology
|April 8, 2025
概括
长期植入的犹他州电极阵列的扫描电子显微镜 (SEM) 显示电解损伤不会造成重大损伤. 这项研究证实外部电极承受更多的磨损,支持损伤作为安全的神经干扰工具.
科学领域:
- 神经科学是一个神经科学.
- 生物材料科学 生物材料科学
- 医疗器械 医疗器械
背景情况:
- 稳定的长期神经记录对于神经科学研究和脑计算机接口至关重要.
- 慢性电极植入器需要严格的评估,以确保数据质量和设备的寿命.
- 扫描电子显微镜 (SEM) 是评估神经植入物的物理损伤的宝贵工具.
研究的目的:
- 用SEM分析长期植入的犹他州电极阵列的物理状况.
- 评估电解损伤,一种新的扰动技术,对电极阵列完整性的影响.
- 为未来的研究提供一个全面的图像数据集,用于解释电极阵列.
主要方法:
- 长时间 (5942680天) 植入的8个96通道的犹他阵列的SEM成像和分析.
- 在六个类别中量化物理损坏:碎片,涂层裂,尖端断裂,分层,骨断裂.
- 对用于电解损伤的电极和未经此技术处理的电极之间的损伤进行比较分析.
主要成果:
- 与内部电极相比,外部边缘电极的损伤更严重,与之前的发现一致.
- 在用于电解损伤的电极和控制电极之间没有观察到损伤的统计学上显著差异.
- 电解损伤,使用小直流电流,没有引入超出典型磨损的损伤.
结论:
- 电解损伤是一种安全的扰动技术,不会损害长期植入的犹他州电极阵列的物理完整性.
- SEM分析为神经植入物的长期性能和耐用性提供了关键的见解.
- 生成的图像数据集可以作为公共数据库的基础,帮助未来的神经工程中的电极设计和分析.
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