Power-saving design opportunities for wireless intracortical brain-computer interfaces
The efficacy of wireless intracortical brain-computer interfaces (iBCIs) is limited in part by the number of recording channels, which is constrained by the power budget of the implantable system. Designing wireless iBCIs that provide the high-quality recordings of today's wired neural interfac...
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Published in | Nature biomedical engineering Vol. 4; no. 10; pp. 984 - 996 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
England
Nature Publishing Group
01.10.2020
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Subjects | |
Online Access | Get full text |
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Summary: | The efficacy of wireless intracortical brain-computer interfaces (iBCIs) is limited in part by the number of recording channels, which is constrained by the power budget of the implantable system. Designing wireless iBCIs that provide the high-quality recordings of today's wired neural interfaces may lead to inadvertent over-design at the expense of power consumption and scalability. Here, we report analyses of neural signals collected from experimental iBCI measurements in rhesus macaques and from a clinical-trial participant with implanted 96-channel Utah multielectrode arrays to understand the trade-offs between signal quality and decoder performance. Moreover, we propose an efficient hardware design for clinically viable iBCIs, and suggest that the circuit design parameters of current recording iBCIs can be relaxed considerably without loss of performance. The proposed design may allow for an order-of-magnitude power savings and lead to clinically viable iBCIs with a higher channel count. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 these authors jointly supervised the work N.E. and D.G.M. designed the study and analysis, and wrote the manuscript with input from all other authors. N.E and S.D.S were responsible for data collection. J.M.H. planned and performed T5’s array placement surgery. L.R.H. is the sponsor-investigator of the multi-site pilot clinical trial. J.M.H., B.M, and K.V.S. were involved in all aspects of the study. contributed equally to this work Author contributions |
ISSN: | 2157-846X 2157-846X |
DOI: | 10.1038/s41551-020-0595-9 |