Extra-neural signals from severed nerves enable intrinsic hand movements in transhumeral amputations
Journal article, 2022

Robotic prostheses controlled by myoelectric signals can restore limited but important hand function in individuals with upper limb amputation. The lack of individual finger control highlights the yet insurmountable gap to fully replacing a biological hand. Implanted electrodes around severed nerves have been used to elicit sensations perceived as arising from the missing limb, but using such extra-neural electrodes to record motor signals that allow for the decoding of phantom movements has remained elusive. Here, we showed the feasibility of using signals from non-penetrating neural electrodes to decode intrinsic hand and finger movements in individuals with above-elbow amputations. We found that information recorded with extra-neural electrodes alone was enough to decode phantom hand and individual finger movements, and as expected, the addition of myoelectric signals reduced classification errors both in offline and in real-time decoding.

Author

Bahareh Ahkami

Chalmers, Electrical Engineering, Systems and control

Center for Bionics and Pain Research

Enzo Mastinu

Center for Bionics and Pain Research

Chalmers, Electrical Engineering, Systems and control

Eric Earley

Center for Bionics and Pain Research

Chalmers, Electrical Engineering, Systems and control

Max Jair Ortiz Catalan

Sahlgrenska University Hospital

Chalmers, Electrical Engineering, Systems and control

Center for Bionics and Pain Research

University of Gothenburg

Scientific Reports

2045-2322 (ISSN) 20452322 (eISSN)

Vol. 12 1 10218

Subject Categories

Medical Materials

DOI

10.1038/s41598-022-13363-2

PubMed

35715459

More information

Latest update

7/18/2022