Neural Regeneration Research ›› 2013, Vol. 8 ›› Issue (6): 546-553.doi: 10.3969/j.issn.1673-5374.2013.06.008

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Microelectronic neural bridging of toad nerves to restore leg function

Xiaoyan Shen1, 2, Zhigong Wang2, Xiaoying Lv3, Zonghao Huang2   

  1. 1 School of Electronic Information, Nantong University, Nantong 226007, Jiangsu Province, China
    2 Institute of RF- & OE-ICs, Southeast University, Nanjing 210096, Jiangsu Province, China
    3 State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, Jiangsu Province, China
  • Received:2012-06-09 Revised:2012-12-26 Online:2013-02-25 Published:2013-02-25
  • Contact: Zhigong Wang, M.D., Professor, Institute of RF- & OE-ICs, Southeast University, Nantong 210096, Jiangsu Province, China, zgwang@seu.edu.cn.
  • About author:Xiaoyan Shen☆, M.D., Associate professor.
  • Supported by:

    This work was supported by the National Natural Science Foundation of China, No, 90707005, 61001046 and 61204018; the Natural Science Foundation of Education Department of Jiangsu Province, No. 11KJB510023; the Special Foundation and Open Foundation of State Key Laboratory of Bioelectronics of Southeast University, No. 2011E05.

Abstract:

The present study used a microelectronic neural bridge comprised of electrode arrays for neural signal detection, functional electrical stimulation, and a microelectronic circuit including signal amplifying, processing, and functional electrical stimulation to bridge two separate nerves, and to restore the lost function of one nerve. The left leg of one spinal toad was subjected to external mechanical stimulation and functional electrical stimulation driving. The function of the left leg of one spinal toad was regenerated to the corresponding leg of another spinal toad using a microelectronic neural bridge. Oscilloscope tracings showed that the electromyographic signals from controlled spinal toads were generated by neural signals that controlled the spinal toad, and there was a delay between signals. This study demonstrates that microelectronic neural bridging can be used to restore neural function between different injured nerves.

Key words: neural regeneration, basic research, microelectronic neural bridge, electromyographic signal, coherence function, nerve injury, spinal reflex arc, spinal toad, grants-supported paper, photographs-containing paper, neuroregeneration