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Related Concept Videos

Stages of General Anesthesia01:22

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Various sedation levels offer significant advantages in facilitating procedural interventions for patients undergoing medical or invasive surgical procedures. These levels span from anxiolysis to general anesthesia, providing a spectrum of sedative effects to cater to specific patient needs. Anxiolysis reduces anxiety and is achieved through minimal sedation, enabling patients to remain awake and responsive while feeling more at ease during the procedure. This level can benefit minor...
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Local anesthetics (LAs) block the sodium channels of nerve trunks, sensory nerve endings, and neuromuscular junctions. Although LAs can block all kinds of nerves, the sensitivity of nerve fibers differs according to nerve types and structures. LAs are known to block myelinated fibers faster than unmyelinated ones. Also, they block pain or sensory neurons at low concentrations without affecting the motor neurons involved in muscle contractions. This helps relieve labor pain without affecting the...
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Related Experiment Video

Updated: Mar 7, 2026

Method for Simultaneous fMRI/EEG Data Collection during a Focused Attention Suggestion for Differential Thermal Sensation
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Hypnotic Tactile Anesthesia: Psychophysical and Signal-Detection Analyses.

Douglas J Tataryn1, John F Kihlstrom2

  • 1a University of Manitoba , Winnipeg , Manitoba , Canada.

The International Journal of Clinical and Experimental Hypnosis
|February 24, 2017
PubMed
Summary
This summary is machine-generated.

Hypnotic suggestions for anesthesia linearly correlate with hypnotizability. While anesthesia suggestions altered tactile sensitivity and bias, hyperesthesia suggestions did not, revealing artifactual bias in initial analyses.

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Area of Science:

  • Psychology
  • Neuroscience
  • Cognitive Science

Background:

  • Hypnotic suggestion can alter sensory perception.
  • Previous research has explored hypnotic effects on pain and touch, but findings on sensitivity modulation are mixed.

Purpose of the Study:

  • To investigate the relationship between hypnotizability and the effects of hypnotic suggestions on tactile sensitivity.
  • To examine the impact of hypnotic suggestions for anesthesia and hyperesthesia using psychophysical and signal-detection methods.

Main Methods:

  • Two experiments were conducted using psychophysical methods and signal-detection procedures.
  • Experiment 1 assessed tactile sensitivity changes related to hypnotic anesthesia and hypnotizability.
  • Experiment 2 utilized a real-simulator paradigm to study hypnotic anesthesia and hyperesthesia effects.

Main Results:

  • Hypnotic suggestions for anesthesia showed a linear relationship with hypnotizability.
  • Significant effects on tactile sensitivity and bias were observed under hypnotic anesthesia, but not hyperesthesia.
  • A novel bias parameter (C') identified much of the initial bias as artifactual, linked to sensitivity changes.

Conclusions:

  • Hypnotizability is a key factor in modulating tactile sensitivity via hypnotic suggestion, particularly for anesthesia.
  • Hypnotic suggestions can influence tactile perception, but the effects are specific to the type of suggestion (anesthesia vs. hyperesthesia).
  • The study highlights the importance of accounting for sensitivity changes when analyzing bias in hypnotic research.