An automated system for rapid evaluation of high-density electrode arrays in neural prostheses

摘要: The success of high-density electrode arrays for use in neural prostheses depends on efficient impedance monitoring and fault detection. Conventional methods testing detection are time consuming not always suited vivo assessment arrays. Additionally, the ability to evaluate impedances faults such as open short circuits, both vitro vivo, important ensure safe effective stimulation. In this work we describe an automated system rapid evaluation uses a current pulse similar that used stimulate tissue measures voltage across order calculate impedance. switching was validated by emulating array using light-emitting diodes resistor-capacitor network. tested range commercially available in-house developed accurately identified 84-electrode less than 20 s reliably measured up 110 kΩ 200 µA, 250 µs per phase pulse. This has direct application screening clinical experimental settings.