无源多通道神经硅微电极的设计方法

为了探讨一种用于神经信号测量的无源多通道硅微电极的设计方法，基于电极的结构和制造工艺，提出了硅微电极用于测量神经信号的电路模型．从大脑皮层及脑膜的结构、互连线的干扰噪声和探针的机械特性3个方面讨论了神经微电极探针的几何参数确定方法，并提出了在满足一定负载能力以穿透硬度较大的脑膜的前提下，尽量减小探针体积的设计原则．

Design Method of Passive Multichannel Silicon Neural Microelectrode

The objective of this paper is to find a method to design a passive multichannel silicon microelectrode, the microelectrode is used to measure the neural signal. A circuit model used to measure the neural signal by the silicon microelectrode is proposed based on the structure and fabrication process of the microelectrode. The method of determining the dimensional parameter values of the neural probe is discussed in the following three aspects: the structure of pallium and endocranium, efficiency, coupled interconnects noise and strength characteristic of neural probe. A design criterion, which is to minimize the size of the neural probe as much as possible when the probe has enough stiffness to pierce the endocranium, is proposed.