| | |
Summary: · One patient suffering from chronic
arthritis was tested. Prior to
scanning, the patient was trained to
use the finger-span device to rate
magnitudes (fig. 1).
· In the scanner the patient rated 1)
spontaneous pain in the absence of
external stimulation (baseline) using
the finger-span device, 2) rated
fluctuations in pain during application
of random series of external
mechanical stimuli (stimulus pain
rating) to the painful joints, and 3)
the length of a bar that fluctuates in
time in a pattern derived from their
own ratings of pain (visual control
signal).
·The patient stopped analgesic
medications for 24 hours. He
was scanned prior-, 1 and 3
|
