Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

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.

View full-text article in PMC

. 2020 Mar 29;5(2):e817. doi: 10.1097/PR9.0000000000000817

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2020 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of The International Association for the Study of Pain.

This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal.

PMC Copyright notice

Figure 2. — Conditioned pain modulation (CPM) and offset analgesia (OA) at all measurement time points. Offset analgesia response expressed as the difference between offset trial (OT%) and constant trial (CT%) (for OT% and CT%: difference of the maximum pain ratings for T2 (T2_max) and minimum pain ratings for T3 (T3_min) corrected by T2_max ([(T2_max − T3_min)/T2_max] × 100%). CPM response expressed as the difference of the first test stimuli (before the conditioning stimulus) and second test stimulus and divided by first test stimulus ([(TS_post − TS_pre)/TS_pre] × 100%). OA response at the forearm (A) and the lower back (B), CPM response at the forearm (C) and the lower back (D). Data are presented as mean values and SEs (SEM).