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 The spatial frequency tuning curves and their inverse Fourier transforms for three sample neurons of the simulated V1 layer (central neuron and two nearby neurons at distance d from it). The input grating used to obtain the curves had a temporal frequency of 3.16 Hz. b The weighted sum of the spatial profiles to obtain a filter with an arbitrary phase value. The value of k can be chosen as being approximately equal to d.
