Magnetic-thrust flexible electrode with integrated preampliier for neural recording

Toshihiko Noda, Yoshiya Matsuzaka, Seok Beom Kim, Hiroaki Takehara, Kiyotaka Sasagawa, Takashi Tokuda, Hajime Mushiake, Hiroshi Onodera, Jun Ohta

Research output: Contribution to journalArticlepeer-review


Flexible electrodes for use in recording neural activity were fabricated in this study, and their use was demonstrated. By using the mechanical force generated by a magnetic ield, an electrode can be inserted into a tissue, and the position of the electrode can be controlled. The position and insertion path of the electrode can be controlled accurately with a high degree of freedom. No stiffener materials are required for the insertion process. A headstage ampliier, which is indispensable for low-noise recording, was hybrid-integrated with a lexible electrode. A miniaturized main ampliier that served as a second-stage ampliier was also fabricated. The magnetic controllability of the fabricated electrode was demonstrated using a phantom of a tissue. An in vivo experiment was also performed for the functional validation of the recording function. Local ield potentials were recorded successfully as a result of the experiment.

Original languageEnglish
Pages (from-to)1079-1089
Number of pages11
JournalSensors and Materials
Issue number11
Publication statusPublished - 2015


  • Integrated preampliier
  • Lexible electrode
  • Magnetic thrust
  • Neural recording

ASJC Scopus subject areas

  • Instrumentation
  • Materials Science(all)


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