Noninvasive Pain Measurement
Noninvasive Pain Measurement - Related Videos
09:31
Noninvasive Blood Pressure Measurement Techniques
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2023
Source: Hamna J. Qureshi and Craig J. Goergen, Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana Here we will highlight the key similarities and differences of noninvasive blood pressure measurement techniques between humans and rodents and examine the engineering principles that govern blood pressure. The principles that govern current cuff technology to acquire systolic and diastolic pressures will also be discussed. Commercially available cuffs that connect...
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.
12:20
Use of the Operant Orofacial Pain Assessment Device (OPAD) to Measure Changes in Nociceptive Behavior
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Cited by 42 •
2013
We present a user-friendly, high-throughput operant system for the evaluation of pain behaviors in awake, conscious rodents. The Orofacial Pain Assessment Device (OPAD) can assess pain through a reward/conflict paradigm thus providing a more humane way of testing. This protocol will yield more clinically relevant and translational data from rodents.
06:57
Mechanical Conflict-Avoidance Assay to Measure Pain Behavior in Mice
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Cited by 10 •
2022
The mechanical conflict-avoidance assay is used as a non-reflexive readout of pain sensitivity in mice which can be used to better understand affective-motivational responses in a variety of mouse pain models.
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
Combining modalities strengthens interpretation because pain-related behavior and physiological change provide different kinds of evidence. Facial expression, protective movement, posture, and vocalization show observable responses, while noncontact physiological signals capture bodily changes associated with nociceptive stress. Considering these measures together can support more reliable comparisons across experimental conditions than relying on a single indicator alone.
Pain-related behaviors may include facial expressions, protective movements, altered posture, and vocalizations, but their meaning can vary among individuals and situations. A response may therefore reflect the surrounding context as well as nociceptive stress. Standardized observation and comparison with clinical or self-reported information help researchers distinguish meaningful changes from normal behavioral variation.
Noncontact physiological signals add an objective measurement channel without requiring tissue penetration. They can change during nociceptive stress and complement visible behavioral responses, particularly when behavior is difficult to observe consistently. Their greatest value comes from interpreting them as part of a broader assessment rather than treating any single physiological change as a complete measure of pain.
Standardization requires applying the same observation approach and measurement conditions when comparing people, treatments, or experimental stimuli. Consistent recording of facial expressions, movements, posture, vocalizations, and available physiological signals improves comparability. Because responses differ across individuals and contexts, researchers should also document relevant conditions and interpret changes alongside clinical or self-reported measures when those are available.
Researchers can compare pain-related behaviors and noncontact physiological responses before and after an analgesic intervention or across treated and untreated conditions. Reduced responses may indicate a change associated with the intervention, but interpretation depends on consistent measurement and appropriate comparison. Combining modalities helps quantify treatment-related differences while reducing reliance on one subjective or behavioral outcome.
The approach is particularly useful when verbal reporting is limited or unavailable, because observable responses and noncontact physiological signals can provide information that self-report cannot supply. In clinical and behavioral research settings, these measures support monitoring and comparison of pain-related responses. They remain most informative when interpreted with clinical observations and any self-reported information that can be obtained.