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.
Mean latencies to respond on exchange, choice, and trial initiation keys as a function of the mixed-time (MT) or fixed-time (FT) delay, averaged across subjects, in delayed-exchange conditions. Error bars indicate across-subject standard deviations.
