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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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Sensory Perception: Organization of the Somatosensory System01:11

Sensory Perception: Organization of the Somatosensory System

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The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the...
3.3K
Somatosensation01:33

Somatosensation

37.1K
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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Perception01:28

Perception

531
Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
Bottom-up processing begins at the sensory level, where receptors detect external environmental stimuli. These could include the tactile sensation of...
531
Analgesia and Pain Management01:25

Analgesia and Pain Management

712
Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
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Related Experiment Video

Updated: Aug 16, 2025

Investigating Pain-Related Avoidance Behavior using a Robotic Arm-Reaching Paradigm
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Pain, from perception to action: A computational perspective.

Zhe Sage Chen1,2,3,4, Jing Wang2,3,4,5

  • 1Department of Psychiatry, New York University Grossman School of Medicine, New York, NY 10016, USA.

Iscience
|December 26, 2022
PubMed
Summary
This summary is machine-generated.

Pain perception and action are shaped by predictions interacting with sensory input. Computational models like Bayesian inference and reinforcement learning offer insights into adaptive pain behaviors and related processes.

Keywords:
BioinformaticsNeuroscienceSensory neuroscience

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Area of Science:

  • Neuroscience
  • Computational Psychology
  • Pain Research

Background:

  • Pain is a complex experience involving sensory and emotional components.
  • Pain influences decision-making and actions.
  • Understanding the pain perception-action cycle is crucial.

Purpose of the Study:

  • To frame the study of pain within a sensory-motor prediction closed-loop framework.
  • To explore the roles of Bayesian inference and reinforcement learning in modeling pain behaviors.
  • To elucidate how prediction shapes pain perception and action.

Main Methods:

  • Formulating pain within a closed-loop sensory-motor prediction framework.
  • Describing the application of Bayesian inference and reinforcement learning theories.
  • Analyzing the commonalities and unique contributions of these computational theories.

Main Results:

  • Prediction is a central theme connecting Bayesian inference and reinforcement learning in pain research.
  • Both theories explain distinct aspects of the pain perception-action cycle.
  • Computational models enhance understanding of anticipation, attention, placebo effects, and pain chronification.

Conclusions:

  • A closed-loop predictive framework provides a comprehensive view of pain.
  • Computational theories offer valuable tools for mechanistic insights into pain processing.
  • Further development of these models can advance pain management strategies.