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) Velocity component perpendicular to the visibility modulation direction (θ) against normalized time for the 12 directions of movement (colors as in Fig 4A). Inset shows peak speed against distance to target perpendicular to θ. (B) as (A) for the velocity component in the visibility of modulation direction.
