Trial reportMolecular pain2011
Selective nociceptor activation in volunteers by infrared diode laser.
Trial report in Molecular pain, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
17 citing papers in PubMed, 39 citations in OpenAlex.
- Characterization of Patients With and Without Painful Peripheral Neuropathy After Receiving Neurotoxic Chemotherapy: Traditional Quantitative Sensory Testing vs C-Fiber and Aδ-Fiber Selective Diode Laser Stimulation.The journal of pain · 2022Trial
- Total Intravenous Anesthesia with Propofol Effectively Provides a Light Anesthesia Plane in Cynomolgus Male Monkeys (Macaca fascicularis) Undergoing Nociceptive Heat Stimulation.Journal of the American Association for Laboratory Animal Science : JAALAS · 2026Article
- Skin innervation and itsFrontiers in cellular neuroscience · 2026Review
- Article
- Artificial Photothermal Nociceptor Using Mott Oscillators.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- An intensity matched comparison of laser- and contact heat evoked potentials.Scientific reports · 2021Article
- Can Event-Related Potentials Evoked by Heel Lance Assess Pain Processing in Neonates? A Systematic Review.Children (Basel, Switzerland) · 2021Review
- Segmental Chiropractic Spinal Manipulation Does not Reduce Pain Amplification and the Associated Pain-Related Brain Activity in a Capsaicin-Heat Pain Model.Frontiers in pain research (Lausanne, Switzerland) · 2021Article
- Discovery of a selective, state-independent inhibitor of NaScientific reports · 2020Article
- Single and double pain responses to individually titrated ultra-short laser stimulation in humans.BMC anesthesiology · 2019Article
- Laser-induced thermoelastic effects can evoke tactile sensations.Scientific reports · 2015Article
- ATP P2X3 receptors and neuronal sensitization.Frontiers in cellular neuroscience · 2013Review
- Translational aspects of rectal evoked potentials: a comparative study in rats and humans.American journal of physiology. Gastrointestinal and liver physiology · 2013Article
- Cortical activity evoked by an acute painful tissue-damaging stimulus in healthy adult volunteers.Journal of neurophysiology · 2013Article
- Qualia could arise from information processing in local cortical networks.Frontiers in psychology · 2013Article
- Laser acupuncture - innovative basic research: visual and laser-induced evoked potentials.Laser therapy · 2012Article
- Laser-induced evoked potentials in the brain after nonperceptible optical stimulation at the neiguan acupoint: a preliminary report.Evidence-based complementary and alternative medicine : eCAM · 2012Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
Abstract
backgroundTwo main classes of peripheral sensory neurons contribute to thermal pain sensitivity: the unmyelinated C fibers and thinly myelinated Aδ fibers. These two fiber types may differentially underlie different clinical pain states and distinctions in the efficacy of analgesic treatments. Methods of differentially testing C and Aδ thermal pain are widely used in animal experimentation, but these methods are not optimal for human volunteer and patient use. Thus, this project aimed to provide psychophysical and electrophysiological evidence that whether different protocols of infrared diode laser stimulation, which allows for direct activation of nociceptive terminals deep in the skin, could differentially activate Aδ or C fiber thermonociceptors in volunteers.
resultsShort (60 ms), high intensity laser pulses (SP) evoked monomodal "pricking" pain which was not enhanced by topical capsaicin, whereas longer, lower power pulses (LP) evoked monomodal "burning" pain which was enhanced by topical capsaicin. SP also produced cortical evoked EEG potentials consistent with Aδ mediation, the amplitude of which was directly correlated with pain intensity but was not affected by topical capsaicin. LP also produced a distinct evoked potential pattern the amplitude of which was also correlated with pain intensity, which was enhanced by topical capsaicin, and the latency of which could be used to estimate the conduction velocity of the mediating nociceptive fibers.
conclusionsPsychophysical and electrophysiological data were consistent with the ability of short high intensity infrared laser pulses to selectively produce Aδ mediated pain and of longer pulses to selectively produce C fiber mediated thermal pain. Thus, the use of these or similar protocols may be useful in developing and testing novel therapeutics based on the differential molecular mechanisms underlying activation of the two fiber types (e.g., TRPV1, TRPV2, etc). In addition, these protocol may be useful in determining the fiber mediation of different clinical pain types which may, in turn be useful in treatment choice.
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.