First-in-human demonstration of floating EMG sensors and stimulators wirelessly powered and operated by volume conduction.

"Declarations Ethics approval and consent to participateThe procedures were conducted in accordance with the Declaration of Helsinki and approved by the local Ethics Committees of the Movement Disorders Clinic of Gregorio Marañón Hospital – Madrid – and the Biomechanics and Assistive Technology Unit of National Hospital for Paraplegics – Toledo – (reference numbers 18/2020 and 565 respectively), as well as by the Spanish Agency of Medicines and Medical Devices (AEMPS) – records 858/20/EC and 856/20/EC respectively. The participants volunteered to participate in this study, were informed about the procedures and possible adverse effects, and signed the informed consent to participate. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This work has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 779982 (Project EXTEND - Bidirectional Hyper-Connected Neural System). CR has been also partially funded by CSIC Interdisciplinary Thematic Platform (PTI+) NEURO-AGINGl+ (PTI-NEURO-AGING+). FOB thanks the financial support from the Spanish MCIN/AEI/10.13039/501100011033 and by the “European Union NextGenerationEU/PRTR” under Grant agreement IJC2020-044467-I. AI gratefully acknowledges the financial support by ICREA under the ICREA Academia programme."