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Related Concept Videos

Pain01:20

Pain

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Pain serves as a critical warning signal that alerts the body to potential or actual harm. When mechanical pressure on the skin is intense, such as from a sharp pinch, the sensation transitions from touch to pain. Similarly, extreme temperatures, like a hot pot handle, convert the sensation of heat into pain. Pain can also result from overstimulation of other senses, such as blinding light, loud noise, or the intense heat from habañero peppers. This ability to sense pain is essential for...
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Nociception01:44

Nociception

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Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain.
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Somatosensation01:33

Somatosensation

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The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
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Neuronal activation patterns during self-referential pain imagination.

Annabel Vetterlein1, Thomas Plieger1, Merlin Monzel1

  • 1Department of Psychology, University of Bonn, Bonn, Germany.

Neurobiology of Pain (Cambridge, Mass.)
|September 10, 2024
PubMed
Summary
This summary is machine-generated.

Imagining pain activates brain regions similar to experiencing it. While pain sensitivity and locus of control influenced ratings, they didn't predict brain activity, suggesting a complex self-referential pain processing.

Keywords:
Locus of controlPain imaginationPain sensitivityPain-related brain regionsfMRI

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Area of Science:

  • Neuroscience
  • Psychology
  • Pain Research

Background:

  • Understanding the neural basis of self-referential pain imagination is crucial for clinical pain management and therapy.
  • Previous research has limitations due to a focus on empathy for pain and small sample sizes.

Purpose of the Study:

  • To investigate the neurobiological mechanisms underlying the imagination of self-experienced pain.
  • To explore the moderating roles of pain sensitivity (PS) and locus of control (LoC) in self-referential pain imagination.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used with 82 participants performing a pain imagination task.
  • Participants imagined painful and non-painful scenarios and provided painfulness ratings.
  • Pain sensitivity was measured via electrical pain thresholds, and locus of control via questionnaire.

Main Results:

  • Brain activity contrasts (pain vs. no pain) were observed in established pain-related areas, including the prefrontal cortex, motor cortices, somatosensory cortex, and cerebellum.
  • Higher pain sensitivity and external locus of control correlated with higher painfulness ratings.
  • Neither pain sensitivity nor internal locus of control significantly predicted brain signal contrasts.

Conclusions:

  • The study provides preliminary evidence for a neuronal overlap between pain imagination and perception.
  • Self-referential pain imagination engages brain networks involved in pain processing.
  • Further research is needed to fully elucidate the complex interplay of psychological factors and neural responses in pain imagination.