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, Schematic illustration of the visual stimulus. A black dot (radius, 0.57°) moved linearly within a virtual rectangle of 30 × 40 cm at the speed of 4°/sec and changed randomly its direction once every 0.3–2 sec.b, The subject’s finger movements during the eye–finger pursuit task, traced with a small pen fixed to the right index finger.
