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Related Experiment Video

Updated: May 22, 2026

Double-barreled and Concentric Microelectrodes for Measurement of Extracellular Ion Signals in Brain Tissue
11:08

Double-barreled and Concentric Microelectrodes for Measurement of Extracellular Ion Signals in Brain Tissue

Published on: September 5, 2015

Dual-frequency-channel integrated bioelectronics for in-sensor decoupling high-dimension neurophysiologic signals.

Xinjie Pei1, Mubai Sun2, Renzhong Chen1

  • 1Department of Macromolecular Science, Fudan University, Shanghai, 200433, China; State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China; Laboratory of Molecular Materials and Devices, Fudan University, Shanghai, 200433, China.

Biosensors & Bioelectronics
|May 20, 2026
PubMed

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Summary

Researchers developed a photolithographic organic electrochemical transistor (OECT) matrix for high-resolution mapping of neural and neurotransmitter signals. This device enables precise localization of epileptic foci for improved neurosurgical interventions.

Area of Science:

  • Neuroscience
  • Materials Science
  • Bioelectronics

Background:

  • Accurate electrophysiological mapping is crucial for understanding physiological functions.
  • Existing methods often lack the required spatial and temporal resolution.

Purpose of the Study:

  • To develop a novel photolithographic organic electrochemical transistor (OECT) matrix.
  • To achieve spatiotemporal mapping of electroneurographic and neurotransmitter signals with high resolution.

Main Methods:

  • Fabrication of a photolithographic OECT matrix with dual frequency-dependent channels.
  • Utilizing a nanoscale interpenetrating network for fast ion transport.
  • Employing enzymatic reactions for neurotransmitter detection.

Main Results:

Keywords:
Colocalizing epileptic focusDual-frequency-channelIntegrated bioelectronicsOrganic electrochemical transistor

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Simultaneous Scalp Electroencephalography (EEG), Electromyography (EMG), and Whole-body Segmental Inertial Recording for Multi-modal Neural Decoding

Published on: July 26, 2013

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Last Updated: May 22, 2026

Double-barreled and Concentric Microelectrodes for Measurement of Extracellular Ion Signals in Brain Tissue
11:08

Double-barreled and Concentric Microelectrodes for Measurement of Extracellular Ion Signals in Brain Tissue

Published on: September 5, 2015

Simultaneous Scalp Electroencephalography (EEG), Electromyography (EMG), and Whole-body Segmental Inertial Recording for Multi-modal Neural Decoding
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Simultaneous Scalp Electroencephalography (EEG), Electromyography (EMG), and Whole-body Segmental Inertial Recording for Multi-modal Neural Decoding

Published on: July 26, 2013

  • Achieved a low detection limit of 900 zM for glutamate.
  • Demonstrated conformal contact with high signal-to-noise ratio (SNR) of ~40 dB.
  • Successfully imaged dual-mode neurophysiological patterns and localized epileptic foci in mice.

Conclusions:

  • The OECT matrix provides a powerful tool for simultaneous mapping of neural activity and neurotransmitter dynamics.
  • Dual-frequency channels effectively decouple and avoid signal interference.
  • The technology holds promise for precise neurosurgical interventions by accurately identifying epileptic foci.