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Science. 2015 Jan 9;347(6218):159-63. doi: 10.1126/science.1260318.

Biomaterials. Electronic dura mater for long-term multimodal neural interfaces.

Author information

1
Bertarelli Foundation Chair in Neuroprosthetic Technology, Laboratory for Soft Bioelectronic Interfaces, Centre for Neuroprosthetics, Institute of Microengineering and Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland.
2
International Paraplegic Foundation Chair in Spinal Cord Repair, Centre for Neuroprosthetics and Brain Mind Institute, EPFL, Switzerland. Pavlov Institute of Physiology, St. Petersburg, Russia.
3
International Paraplegic Foundation Chair in Spinal Cord Repair, Centre for Neuroprosthetics and Brain Mind Institute, EPFL, Switzerland.
4
Translational Neural Engineering Laboratory, Center for Neuroprosthetics and Institute of Bioengineering, EPFL, Lausanne, Switzerland.
5
Bertarelli Foundation Chair in Neuroprosthetic Technology, Laboratory for Soft Bioelectronic Interfaces, Centre for Neuroprosthetics, Institute of Microengineering and Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland. International Paraplegic Foundation Chair in Spinal Cord Repair, Centre for Neuroprosthetics and Brain Mind Institute, EPFL, Switzerland.
6
School of Engineering and Applied Sciences, Kavli Institute for Bionano Science and Technology, Harvard University, Cambridge, MA, USA.
7
Laboratory for Biosensors and Bioelectronics, Institute for Biomedical Engineering, University and ETH Zurich, Switzerland.
8
Translational Neural Engineering Laboratory, Center for Neuroprosthetics and Institute of Bioengineering, EPFL, Lausanne, Switzerland. The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa 56025, Italy.
9
International Paraplegic Foundation Chair in Spinal Cord Repair, Centre for Neuroprosthetics and Brain Mind Institute, EPFL, Switzerland. gregoire.courtine@epfl.ch stephanie.lacour@epfl.ch.
10
Bertarelli Foundation Chair in Neuroprosthetic Technology, Laboratory for Soft Bioelectronic Interfaces, Centre for Neuroprosthetics, Institute of Microengineering and Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland. gregoire.courtine@epfl.ch stephanie.lacour@epfl.ch.

Abstract

The mechanical mismatch between soft neural tissues and stiff neural implants hinders the long-term performance of implantable neuroprostheses. Here, we designed and fabricated soft neural implants with the shape and elasticity of dura mater, the protective membrane of the brain and spinal cord. The electronic dura mater, which we call e-dura, embeds interconnects, electrodes, and chemotrodes that sustain millions of mechanical stretch cycles, electrical stimulation pulses, and chemical injections. These integrated modalities enable multiple neuroprosthetic applications. The soft implants extracted cortical states in freely behaving animals for brain-machine interface and delivered electrochemical spinal neuromodulation that restored locomotion after paralyzing spinal cord injury.

PMID:
25574019
DOI:
10.1126/science.1260318
[Indexed for MEDLINE]
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