A Bidirectional Neuromodulation Technology for Nerve Recording and Stimulation
Electrical nerve recording and stimulation technologies are critically needed to monitor and modulate nerve activity to treat a variety of neurological diseases. However, current neuromodulation technologies presented in the literature or commercially available products cannot support simultaneous r...
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doaj-c7863a30c39d4777a316e4e18411eb452020-11-24T22:03:18ZengMDPI AGMicromachines2072-666X2018-10-0191153810.3390/mi9110538mi9110538A Bidirectional Neuromodulation Technology for Nerve Recording and StimulationJian Xu0Hongsun Guo1Anh Tuan Nguyen2Hubert Lim3Zhi Yang4Department of Biomedical Engineering, University of Minnesota, 312 Church Street SE, Minneapolis, MN 55455, USADepartment of Biomedical Engineering, University of Minnesota, 312 Church Street SE, Minneapolis, MN 55455, USADepartment of Biomedical Engineering, University of Minnesota, 312 Church Street SE, Minneapolis, MN 55455, USADepartment of Biomedical Engineering, University of Minnesota, 312 Church Street SE, Minneapolis, MN 55455, USADepartment of Biomedical Engineering, University of Minnesota, 312 Church Street SE, Minneapolis, MN 55455, USAElectrical nerve recording and stimulation technologies are critically needed to monitor and modulate nerve activity to treat a variety of neurological diseases. However, current neuromodulation technologies presented in the literature or commercially available products cannot support simultaneous recording and stimulation on the same nerve. To solve this problem, a new bidirectional neuromodulation system-on-chip (SoC) is proposed in this paper, which includes a frequency-shaping neural recorder and a fully integrated neural stimulator with charge balancing capability. In addition, auxiliary circuits consisting of power management and data transmission circuits are designed to provide the necessary power supply for the SoC and the bidirectional data communication between the SoC and an external computer via a universal serial bus (USB) interface, respectively. To achieve sufficient low input noise for sensing nerve activity at a sub-10 <inline-formula> <math display="inline"> <semantics> <mi mathvariant="sans-serif">μ</mi> </semantics> </math> </inline-formula>V range, several noise reduction techniques are developed in the neural recorder. The designed SoC was fabricated in a 0.18 <inline-formula> <math display="inline"> <semantics> <mi mathvariant="sans-serif">μ</mi> </semantics> </math> </inline-formula>m high-voltage Bipolar CMOS DMOS (BCD) process technology that was described in a previous publication and it has been recently tested in animal experiments that demonstrate the proposed SoC is capable of achieving reliable and simultaneous electrical stimulation and recording on the same nerve.https://www.mdpi.com/2072-666X/9/11/538system-on-chipneuromodulationbidirectionalclosed-loopsciatic nervevagus nerveprecision medicine |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jian Xu Hongsun Guo Anh Tuan Nguyen Hubert Lim Zhi Yang |
spellingShingle |
Jian Xu Hongsun Guo Anh Tuan Nguyen Hubert Lim Zhi Yang A Bidirectional Neuromodulation Technology for Nerve Recording and Stimulation Micromachines system-on-chip neuromodulation bidirectional closed-loop sciatic nerve vagus nerve precision medicine |
author_facet |
Jian Xu Hongsun Guo Anh Tuan Nguyen Hubert Lim Zhi Yang |
author_sort |
Jian Xu |
title |
A Bidirectional Neuromodulation Technology for Nerve Recording and Stimulation |
title_short |
A Bidirectional Neuromodulation Technology for Nerve Recording and Stimulation |
title_full |
A Bidirectional Neuromodulation Technology for Nerve Recording and Stimulation |
title_fullStr |
A Bidirectional Neuromodulation Technology for Nerve Recording and Stimulation |
title_full_unstemmed |
A Bidirectional Neuromodulation Technology for Nerve Recording and Stimulation |
title_sort |
bidirectional neuromodulation technology for nerve recording and stimulation |
publisher |
MDPI AG |
series |
Micromachines |
issn |
2072-666X |
publishDate |
2018-10-01 |
description |
Electrical nerve recording and stimulation technologies are critically needed to monitor and modulate nerve activity to treat a variety of neurological diseases. However, current neuromodulation technologies presented in the literature or commercially available products cannot support simultaneous recording and stimulation on the same nerve. To solve this problem, a new bidirectional neuromodulation system-on-chip (SoC) is proposed in this paper, which includes a frequency-shaping neural recorder and a fully integrated neural stimulator with charge balancing capability. In addition, auxiliary circuits consisting of power management and data transmission circuits are designed to provide the necessary power supply for the SoC and the bidirectional data communication between the SoC and an external computer via a universal serial bus (USB) interface, respectively. To achieve sufficient low input noise for sensing nerve activity at a sub-10 <inline-formula> <math display="inline"> <semantics> <mi mathvariant="sans-serif">μ</mi> </semantics> </math> </inline-formula>V range, several noise reduction techniques are developed in the neural recorder. The designed SoC was fabricated in a 0.18 <inline-formula> <math display="inline"> <semantics> <mi mathvariant="sans-serif">μ</mi> </semantics> </math> </inline-formula>m high-voltage Bipolar CMOS DMOS (BCD) process technology that was described in a previous publication and it has been recently tested in animal experiments that demonstrate the proposed SoC is capable of achieving reliable and simultaneous electrical stimulation and recording on the same nerve. |
topic |
system-on-chip neuromodulation bidirectional closed-loop sciatic nerve vagus nerve precision medicine |
url |
https://www.mdpi.com/2072-666X/9/11/538 |
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