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Table 4 Functional grasps obtained with configurations.

From: Selective neural electrical stimulation restores hand and forearm movements in individuals with complete tetraplegia

Median nerve - functional movements
SubjectKey grip
Power grip
Hook grip
P5TT (C3)
-
TLR(B2;B3;B4) TL (B1*;B2)
-
*Fingers r = 0.72, Thumb r = 0.41, I = 1400 μA
Not observedNot observed
P6TT (A4)
-
-
-
Fingers r = 0.35, Thumb r = 1, I = 960 μA
-
STR (B1*)
TLR (B4*)
Ring* BP (BA*)
*MRC < 4
-
TTR (B1;B4)
TLR (B1) TL (B3*)
-
*Fingers r = 0.18, I = 720 μA
P7TT (A1;A4;B4)
TTR (B1*;B3)
TLR (B1;B3) TL (B1;B3)
Ring BP (BC;AB;BA)
*Fingers r = 0.68, Thumb r = 0.38, I = 600 μA
-
-
-
BP (AC)
MRC < 4
TT(B3)
-
-
-
MRC < 4
P8Not observedTT (A2*,B2*)
TTR (B2*) STR (B2*)
TLR (B2*;B3*)
-
*MRC < 4
-
-
TLR (B4)
-
MRC < 2
  1. *Identifies the highest MRC obtained, and for Key / Hook grip the recruitment of the targeted muscle with the intensity of the stimulation when clean EMG data are available