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.
Changes in RF dimensions are consistent over the population of cells. (a–f) Length-tuning relationships for bar stimuli for different cells are compared with minimum response measurements of RF size at high contrast (indicated by arrows on y axis). Almost every cell showed a similar trend toward increased spatial summation at low contrasts. Response to background stimulus alone is −1.1 ± 0.8 spikes/sec in a and 33.1 ± 4.7 spikes/sec in b.
