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. 2015 Apr 14;84(15):1575–1581. doi: 10.1212/WNL.0000000000001465

Figure 2. Stimulus-response curves for suprathreshold heat stimuli in patients and controls.

Figure 2

The horizontal axis indicates the percentage above the heat pain threshold (HPT), and the vertical axis the pain ratings (colored analog scale [CAS] [0–100 arbitrary units]; mean [95% confidence interval]) for patients (blue) and controls (red). Equations, describing the relations between stimulus and CAS ratings, are as follows: patients: CAS rating = 32.63 (standard error 4.27) + 0.36 (0.06) × percentage above threshold + 2.79 (0.74) × (HPT-40): controls: CAS rating = 21.66 (3.58) + 0.61 (0.07) × percentage above threshold + 2.79 (0.74) × (HPT-40).