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Table 3 Technical aspects of each study included in the FES collection

From: Soft robotics and functional electrical stimulation advances for restoring hand function in people with SCI: a narrative review, clinical guidelines and future directions

Study /

device used\(^{\text{a}}\)  

Interv.

aim\(^\text{{b}}\)  

Actuation

type

User intent

detection\(^{\text{c}}\)  

Grasp

patterns

Stimulation Parameters\(^{\text{d}}\)  

Home-

based\(^{\text{e}}\)  

CH

F [Hz]

W [\(\mu\)s]

A[mA]

Fattal et al. 2022 [69]/

STIMEP [RP]

A

Implanted

sEMG

Should. pos.

Palmar

Lateral

2

25

100–150

0.08–0.58

U

Cajigas et al. 2021 [49]/

Bioness H200 [C]

A

Superficial

iBMI

Palmar

Lateral

3

R

Venugopalan et al. 2020 [70]/

TetraGrip [RP]

A

Superficial

Should. pos.

Palmar

Lateral

4

U

Müller-Putz et al. 2019 [41]/

TetraGrip [RP]

A

Superficial

Should. pos.

Palmar

Lateral

2

30e

16

500

R

Annetta et al. 2019 [21]

Bockbrader et al. 2019 [20]

Colachis et al. 2018 [58]

Schwemmer et al. 2018 [57]

Bouton et al. 2016 [56]/

BCI-FES [RP]

A

Superficial

iBMI

Palmar

Lateral

3-point

2-point

130e

50

500

0–20

P

Heald et al. 2019 [61]/

FreeHand [C]

A

Implanted

sEMG

Palmar

Lateral

8

P

Kilgore et al. 2018 [19]

Memberg et al. 2014 [59]/

IST-12 [C]

A

Implanted

iEMG

Palmar

Lateral

12

12–16

0–255

0–20

R

Ajiboye et al. 2017 [60]/

no name [C]

A

Implanted

iBMI

Palmar

Lateral

36

12.5

0–200

20

P

Rohm et al. 2013 [71]/

MotionStim [C]

A

Superficial

sBMI

Should. pos.

Palmar

Lateral

4

P

Pedrocchi et al. 2013 [72]/

RehaStim [C]

A

Superficial

None\(^{f}\)

Palmar

20

U

Gan et al. 2012 [73]/

SRS [RP]

A

Implanted

Tooth click

3

R

Thorsen et al. 2013 [74]/

MeCFES [RP]

A/T

Superficial

sEMG

1

16

300

P

Jovanovic et al. 2021 [63]/

Compex Motion [C]

T

Superficial

sBMI

Palmar

Lateral

4

40

250

U

Scott et al. 2018 [48]/

HandGlove 200 [RP]

T

Superficial

None

None

U

Trincado-Alonso et al. 2017 [75]/

INTFES [RP]

T

Superficial

sBMI

1

40

350

14–26

U

Harvey et al. 2016 [76]/

ReGrasp [C]

T

Superficial

Tooth click

3

50

200

<63

R

Kapadia et al. 2013 [62]

Popovic et al. 2011 [11]

(or Kapadia et al. 2011 [46])/

Compex Motion [C]

T

Superficial

Button

Lateral

3-point

2-point

4

40

250

8–50

P

Martin et al. 2012 [77]/

Empi 300 PV [C]

T

Superficial

Button

Lateral

3-point

2

30–50

300

20–40

P

Kowalczewski et al. 2011 [78]/

ReGrasp [C]

EMS 7500 [C]

T

Superficial

Tooth click

None

3

2

R

  1. aC: commercial (including products no longer commercialized); RP: research prototype
  2. bIntervention aim. A: assistance; R: therapy
  3. csEMG: superficial electromyography; iEMG: impanted electromyography; sBMI: superficial brain machine interface; iBMI: implanted brain machine interface; Should. pos.: shoulder position
  4. dCH: number of channels (note: “e” means number of electrodes in case of stimulation matrix); F: frequency; W: pulse width; A: amplitude
  5. e Prepared for home-based use. P: potentially; R: ready; U: unclear
  6. f When tested with people with SCI to control the hand neuroprostheses. The hyphen means lack of information