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.
The roller ball movement performance of example success trial (top panel) and failure trial (bottom panel). There are 5 performance measures in each trial: from top down, roller ball speed profile, displacement of the outer shell (red/light) and inner top (black/dark), velocity of the outer shell (red/light) and inner top (black/dark), relative phase of the outer shell and inner top, relative phase distribution from 0 to 360 degrees.
