A Fully Immersible Deep-Brain Neural Probe with Modular Architecture and a Delta-Sigma ADC Integrated Under Each Electrode for Parallel Readout of 144 Recording Sites

📋 论文概要

本文提出了一种全浸入式深脑神经探针，采用模块化架构并在每个电极下方集成Delta-Sigma ADC，解决了高密度深脑记录中电子集成度受限的问题，实现了同时读取大量电极而无需大量互连。

💡 主要创新点

• 在每个电极下方直接集成Delta-Sigma ADC，实现原位模数转换，减少信号路由和寄生效应。
• 采用模块化架构，允许灵活扩展电极数量并支持同时读取，克服了传统探针互连瓶颈。

🏷 关键词

📄 原文摘要

tissue-penetrating probes for high-density deep-brain recording of in vivo neural activity is limited by the level of electronic integration on the probe shaft. As the number of electrodes increases, conventional devices need either a large number of interconnects at the base of the probe or allow only a reduced number of electrodes to be read out simultaneously [1,2]. Active probes are used to improve the signal quality and reduce parasitic effects in situ, but still need to route these signals from the electrodes to a base where the readout electronics is located on a large area [3,4]. In this work, we present a modular and scalable architecture of a needle probe, which, instead of routing or prebuffering noise-sensitive analog signals along the shaft, integrates analog-todigital conversion under each electrode in an area

👥 作者与机构

Daniel De Dorigo1, Christian Moranz1, Hagen Graf1, Maximilian Marx1,

Boyu Shui1, Matthias Kuhl1, Yiannos Manoli1,2 University of Freiburg - IMTEK, Freiburg, Germany Hahn-Schickard, Villingen-Schwenningen, Germany 1 2 The evolution of