Wearable neural prostheses

Motor and sensory functions can be partly restored using electrical stimulation ES. ES can be delivered through different interfaces Figure 1 such as implanted electrodes epineural or intramuscular electrodes or transcutaneous electrodes [1]. It is important to point out that this is a schematic classification and that the invasivenessselectivity ratio can be modified by changing the structure of the electrodes. For example, as shown in this article, the selectivity of the surface electrodes can be increased by using electrode arrays, and the same applies to other types of electrodes e.g., tripolar and multichannel cuffs.