Table 3. Mean Left–Right Differences, with Upper and Lower Reference Bounds at Wrists and Feet

Mean left side minus right side differences of detection and pain thresholds of 50 healthy volunteers (25 male, 25 female) with upper and lower reference boundaries (RB) at wrists and feet. Temperature thresholds are expressed in degrees centigrade (baseline temperature = 32°C); pressure threshold is expressed in grams force. Pressure pain differences are immeasureable using Semmes–Weinstein monofilaments because the thickest filament is not painful to normal subjects.

WDT = warm detection threshold; CDT = cold detection threshold; WPT = warmth pain threshold; CPT = cold pain threshold; PDT = pressure detection threshold.