Plantar Somatosensory Restoration Enhances Gait, Speed Perception, and Motor Adaptation

These are the data/code needed to reproduce our results.

Below is a description of the data stored inside 'DATA.mat'.

- Baseline: Walking at 0.5 m/s (tied-belt)

• Controls: 6 able-bodied participants
• LLA01, LLA02, & LLA03: 3 participants used sensory neuroprosthesis
• SL_DominantLimb: Dominant leg's step length (SL)
• SL_NonDominantLimb: Non-dominant leg's step length
• SL_Symmetry: Step length symmetry between dominant and non-dominant legs
• ST_DominantLimb: Dominant leg's stance time (ST)
• ST_NonDominantLimb: Non-dominant leg's stance time
• ST_Symmetry: Stance time symmetry between dominant and non-dominant legs
• GRFx_DominantLimb: Mediolateral ground reaction force (GRF) generated from dominant leg
• GRFy_DominantLimb: Anteroposterior GRF generated from dominant leg
• GRFz_DominantLimb: Vertical GRF generated from dominant leg
• GRFx_NonDominantLimb: Mediolateral GRF generated from non-dominant leg
• GRFy_NonDominantLimb: Anteroposterior GRF generated from non-dominant leg
• GRFz_NonDominantLimb: Vertical GRF generated from non-dominant leg
• COP_COM_x: Mediolateral distance between center of pressure (COP) and center of mass (COM) trajectories
• COP_COM_y: Anteroposterior distance between center of pressure and center of mass trajectories
• AMx: Whole-body angular momentum (AM) in the sagittal plane
• AMy: Whole-body AM in the frontal plane

- StimOff/On: Condition under which sensory neuroprosthesis turned off/on

• SL_ProstheticLimb: Prosthetic leg's step length
• SL_IntactLimb: Intact leg's step length
• SL_Symmetry: Step length symmetry between Prosthetic and Intact legs
• ST_ProstheticLimb: Prosthetic leg's stance time
• ST_IntactLimb: Intact leg's stance time
• ST_Symmetry: Stance time symmetry between Prosthetic and Intact legs
• GRFx_ProstheticLimb: Mediolateral GRF generated from Prosthetic leg
• GRFy_ProstheticLimb: Anteroposterior GRF generated from Prosthetic leg
• GRFz_ProstheticLimb: Vertical GRF generated from Prosthetic leg
• GRFx_IntactLimb: Mediolateral GRF generated from Intact leg
• GRFy_IntactLimb: Anteroposterior GRF generated from Intact leg
• GRFz_IntactLimb: Vertical GRF generated from Intact leg
• COP_COM_x: Mediolateral distance between center of pressure and center of mass trajectories
• COP_COM_y: Anteroposterior distance between center of pressure and center of mass trajectories
• AMx: Whole-body angular momentum in the sagittal plane
• Amy: Whole-body angular momentum in the frontal plane

- MAT: Motor adaptation task (a 2:1, 1.0 m/s:0.5 m/s, belt speed perturbation for 10 minutes)

• COMVy: Forward velocity of the body's center of mass 

- SJTpre/post: Symmetry judgment task (verbally announcing whether they perceived both limbs at the same speed) before/after performing the MAT

• SymmetryResponse_Early/Late: Verbal response from the participant on whether the treadmill belts were at the same speed (at early/late SJT)
• ResponseDealy_Early/Late: Time delay to the verbal response (at early/late SJT)