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.
The effect of naltrexone on perceived thermal intensity to holding a warm (vs. neutral) pack and a cold (vs. neutral) pack. Naltrexone (vs. placebo) did not alter perceptions of how warm or cool the objects were rated. Error bars reflect standard errors. Plotted values are difference scores (ratings to the warm pack vs. neutral object and ratings to the cold pack vs. neutral object).
