Fig. 7.

Selective recruitment capabilities from each multicontact selective nerve cuff electrode. In each electrode, one muscle could be selectively activated to at least 48% before any other muscle reached threshold using single contact stimulation (white bars). Field steering (diagonal hatched bars) allowed selective recruitment of two additional muscles and increased the selective action of one muscle. When the criterion for selectivity was relaxed to allow for 20% activation of other muscles (cross hatched bars), the selectivity improved again.