Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
A: mean EMG activity of the pectoralis (PEC), biceps (BI), and wrist flexor (WF) after elbow extension perturbations. Blue and red traces denote IN and OUT conditions, respectively. Data are aligned to perturbation onset. Shading represents ±1 SE. B: same format as A but for the deltoid (DELT), triceps (TRI), and wrist extensor (WE) after elbow flexion perturbations. AU, arbitrary units.
