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Figure 7 | Molecular Pain

Figure 7

From: Types of skin afferent fibers and spinal opioid receptors that contribute to touch-induced inhibition of heart rate changes evoked by noxious cutaneous heat stimulation

Figure 7

Summary of experimental methods for examining the effect of touch on noxious heat-induced heart rate (HR) response. Heat stimulation was applied to the center of the lower back and rumps and touch was applied to the right inner thigh (A). A time point of heat stimulation is indicated by a down arrow (B). HR response was determined as a maximal change of HR during heat stimulation with respect to basal HR (average HR of 1 min before the onset of heat stimulation) (C).

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