Implantable wireless 64-channel system with flexible ECoG electrode and optogenetics probe

Shusuke Yoshimoto, Teppei Araki, Takafumi Uemura, Toshikazu Nezu, Tsuyoshi Sekitani, Takafumi Suzuki, Fumiaki Yoshida, Masayuki Hirata

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

This paper presents a wireless 64-channel electrocorticogram (ECoG) recording system with 2-channel optogenetics manipulation. The proposed system, which is designed minimally to make it implantable into an animal, comprises a main board (75 mm × 40 mm × 12 mm and 33.53 g) and analog-to-digital converter (ADC) boards (25 mm × 20 mm × 2.5 mm and 0.98 g). Each ADC board has an 8-channel 24-bit ADC module that can be connected to the main board with a flexible cable. A biocompatible and flexible ECoG electrode is proposed for non-invasive monitoring. The electrode is covered by shape-memory polymer, which is solid at room temperature (27°C) and flexible at body temperature (35°C). The solid electrode be inserted into a brain. The electrode becomes flexible because of the brain temperature. In addition to the recording channels, two blue and yellow LEDs are developed on a flexible polyimide cable (50 μm thickness and 500 μm width) for optogenetics. This paper presents experimentally obtained results demonstrating that the proposed system records the ECoG of a rat with the flexible electrode and the proposed wireless system.

Original languageEnglish
Title of host publicationProceedings - 2016 IEEE Biomedical Circuits and Systems Conference, BioCAS 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages476-479
Number of pages4
ISBN (Electronic)9781509029594
DOIs
Publication statusPublished - Jan 1 2016
Event12th IEEE Biomedical Circuits and Systems Conference, BioCAS 2016 - Shanghai, China
Duration: Oct 17 2016Oct 19 2016

Publication series

NameProceedings - 2016 IEEE Biomedical Circuits and Systems Conference, BioCAS 2016

Other

Other12th IEEE Biomedical Circuits and Systems Conference, BioCAS 2016
CountryChina
CityShanghai
Period10/17/1610/19/16

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Instrumentation
  • Biomedical Engineering

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  • Cite this

    Yoshimoto, S., Araki, T., Uemura, T., Nezu, T., Sekitani, T., Suzuki, T., Yoshida, F., & Hirata, M. (2016). Implantable wireless 64-channel system with flexible ECoG electrode and optogenetics probe. In Proceedings - 2016 IEEE Biomedical Circuits and Systems Conference, BioCAS 2016 (pp. 476-479). [7833835] (Proceedings - 2016 IEEE Biomedical Circuits and Systems Conference, BioCAS 2016). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/BioCAS.2016.7833835