Table 1.

Comparison of the longevity of the discussed electrodes.

Electrode	Longevity
Cuff	Stable stimulation (after up to 10.4 years) (Christie et al., 2017)
LIFE	Slight and reversible damage (after 3 months) (Navarro et al., 2007)
TIME	Fibrotic layer around the implant, no necrosis or inflammatory cells (after 30 days) (Kundu et al., 2014b)
USEA	Mild or no inflammatory response after 8 weeks (Wark et al., 2014) and 7 months (Branner et al., 2004). Inflammatory reaction after 1 year study (Christensen et al., 2014).
Regenerative	Fascicle regeneration can take up to a month and is not guaranteed. (Mensinger et al., 2000) When regenerated, long-term recording and stimulation may be possible up to 3 (Musick et al., 2015; MacEwan et al., 2016) or 4 months (Desai et al., 2014).