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.
Experimental study design. Unpaired session consisted of 4 alternating tone alone and 4 air puff alone blocks. Participants were then administered 4 conditioning sessions, which consisted of 8 blocks (8 CS–US and 1 CS-alone trials/block) of tone-air puff pairings. Blocks ranged from 44 to 48 s (4–6 s ITI) and time between blocks was 16 s (ISI = interstimulus interval).
