Heat Pain Threshold
Heat Pain Threshold - Related Videos
13:21
Determining heat and mechanical pain threshold in inflamed skin of human subjects
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Cited by 21 •
2009
Algorithms assessing heat and mechanical pain thresholds in experimentally inflamed skin of human study subjects are shown. The two pain testing paradigms independently examine nociceptive processing by the two major peripheral nerve fiber populations transmitting pain, i.e., non-myelinated C fibers and small myelinated A-delta fibers.
09:38
Determining Pain Detection and Tolerance Thresholds Using an Integrated, Multi-Modal Pain Task Battery
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Cited by 17 •
2016
Human pain models are valuable tools used to assess the analgesic potential of novel compounds and predict their clinical efficacy, especially when used in an integrated manner. Although implementation of these models is complex, with proper execution, the pain models described in this protocol can provide predictive and reliable results.
07:28
Psychophysically-anchored, Robust Thresholding in Studying Pain-related Lateralization of Oscillatory Prestimulus Activity
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Cited by 8 •
2017
Psychophysical methods such as the QUEST estimation procedure can efficiently yield robust estimates of the stimulation intensity at which nonpainful sensations transition into painful sensations. By stimulating repeatedly at the threshold intensity, the variability in rating responses can directly be attributed to perceptual classifications in subsequent analyses.
07:28
A Protocol of Manual Tests to Measure Sensation and Pain in Humans
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Cited by 24 •
2016
The goal of this procedure is to demonstrate a battery of quantitative techniques for sensory and pain measurement in humans. The equipment and techniques described are commonly found in pain clinics or are easy to obtain.
14:56
An Experimental Paradigm for the Prediction of Post-Operative Pain (PPOP)
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Cited by 107 •
2010
Diffuse noxious inhibitory control, temporal summation and wound hyperalgesia testing are demonstrated in the obstetric patient. These tests evaluate inhibitory and excitatory mechanisms of pain processing and are here utilized to evaluate endogenous analgesia at different time-points during pregnancy and the peripartum period to help reveal individual s risk for persistent pain.
FAQs
The critical event is activation of heat-sensitive nociceptors, sensory receptors involved in detecting potentially harmful thermal stimulation. Their activity is linked to a conscious report that pain has begun, making the threshold a behavioral measure of nociceptive function. The result connects activity in peripheral sensory pathways with the participant’s experienced pain response.
The measurement can provide information about peripheral processing because heat-sensitive nociceptors respond at the skin. It also relates to central processing because the reported threshold depends on how the nervous system processes that sensory input into conscious pain. Comparing results across conditions can therefore help examine changes at more than one level of pain physiology.
A controlled stimulus makes it possible to identify when pain begins under a defined thermal condition rather than under an uncontrolled exposure. The heat may be increased or maintained until the participant reports pain, producing a measurable response. This approach supports comparisons between individuals, experimental conditions, and treatment-related changes in sensory processing.
Measurements may change when pain processing is affected by injury, inflammation, neurological disorders, or analgesic treatment. Such changes can influence how thermal input is detected or processed before a conscious pain response is reported. Consequently, researchers can use differences in threshold values to investigate altered nociceptive function and the effects of interventions.
The assessment begins by applying a controlled heat stimulus to the skin. The stimulus is then increased or maintained until the participant consciously recognizes the onset of pain and reports it. The reported point becomes the measurement used for comparison across people or experimental conditions, allowing the study to examine changes in sensory physiology.
Researchers can use the measurement when they need to compare sensory responses among individuals or across experimental conditions. It is especially relevant in studies of injury, inflammation, neurological disorders, and analgesic treatment. By tracking when pain begins, investigators can evaluate changes in nociceptive function and relate sensory findings to broader pain mechanisms.
Changes in the measured threshold can indicate that analgesic treatment has altered pain processing, although the measurement itself records the sensory response rather than explaining every underlying mechanism. Comparing values before and after treatment, or between relevant experimental conditions, helps researchers evaluate therapeutic effects on nociceptive function and pain-related sensory outcomes.