Journal
BRAIN-COMPUTER INTERFACES
Volume 4, Issue 3, Pages 146-154Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/2326263X.2017.1338011
Keywords
Closed-loop; micro-electrocorticography; brain-computer interface; medical device; AIMDs
Categories
Funding
- German Federal Ministry of Education and Research, BMBF [01GQ1510 OPTISTIM, 13GW0053D MotorBIC]
- Deutsche Forschungsgemeinschaft, DFG [EXC1086 BrainLinks-BrainTools]
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Wireless implants for interaction with the cortex have developed rapidly over the last decade and increasingly meet demands of clinical brain-computer interfaces. For such applications, well-established technologies are available, suitable for recording of neural activity at different spatial scales and adequate for modulating brain activity by cortical electrical stimulation. The incorporation of recording and stimulation into closed-loop systems is a major aim in active, fully implantable medical device design. To reduce clinical long-term implantation risk and to increase the spatial specificity of epicortical recordings and stimulation, micro-electrocorticography is a promising technology. However, currently there is a lack of implants suitable for chronic human clinical applications that utilize micro-electrocorticography and possess closed-loop functionality. Here, we describe the clinical importance of cortical stimulation, give an overview of existing implants that use mainly epicortical recording methods, and present results of a closed-loop microelectrocorticography system developed for clinical application within a collaborative framework. Finally, we conclude with our vision of future design options in the field of neuroprosthetic devices.
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