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This work presents an 8-channel neuronal signal acquisition and conditioning system with the ability to drive LED on the optrode made of on-the-shelf discrete components. The system is divided into 3 modules: a DC offset generating module, an LED driving module, and a two-stage signal amplifying and conditioning module. Texas Instruments LMP770x series amplifiers were selected to be the amplifiers of this system. The system is designed to be powered with batteries to minimize electromagnetic interference. A PCB was fabricated to verify the system. The gain of the system is 41.3 dB and the bandwidth of the system is 80 Hz to 14 kHz. To verify the ability of the system in laboratory environment, an in vivo recording of the Inferior Colliculus of laboratory mice was conducted.

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AN 8-Channel Neuronal Signal Acquisition and Conditioning System with Optrode LED Driving Capability

  • 会议论文

  • 发表日期：

    2025年

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  • Hong Liang Loo,
  • Xiangxin Ma,
  • Yu Xia,
  • Yujing Huang,
  • Hung Chun Li,
  • Zhen Yuan,
  • Peng Un Mak,
  • Mang I. Vai,
  • Sio Hang Pun

摘要

This work presents an 8-channel neuronal signal acquisition and conditioning system with the ability to drive LED on the optrode made of on-the-shelf discrete components. The system is divided into 3 modules: a DC offset generating module, an LED driving module, and a two-stage signal amplifying and conditioning module. Texas Instruments LMP770x series amplifiers were selected to be the amplifiers of this system. The system is designed to be powered with batteries to minimize electromagnetic interference. A PCB was fabricated to verify the system. The gain of the system is 41.3 dB and the bandwidth of the system is 80 Hz to 14 kHz. To verify the ability of the system in laboratory environment, an in vivo recording of the Inferior Colliculus of laboratory mice was conducted.