Abstract
The effect of progressive relaxation training on pain induced with pressure from a blood pressure cuff was assessed using signal detection procedures. Five male graduate student subjects each served in three experimental sessions under control conditions and three under relaxation conditions. During a single experimental session, one of three pressure intensity pairs was included and 25 presentations of each intensity were made. Stimulus intensities were 25 mm Hg above the individually established threshold, threshold, 25 mm Hg below threshold and 0 intensity. Subjects made a binary identification and rated the intensity of each stimulus. Relaxation did not affect the sensitivity of subjects to the pressure stimuli, but did alter the rating of stimulus intensity. The present data, along with recent data of other investigators, raise questions about the use of signal detection methodologies in the assessment of the analgesic properties of treatments.
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