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Related Experiment Video

Updated: Jun 22, 2026

Tactile Semiautomatic Passive-Finger Angle Stimulator (TSPAS)
04:40

Tactile Semiautomatic Passive-Finger Angle Stimulator (TSPAS)

Published on: July 30, 2020

Temperature perception on the hand during static versus dynamic contact with a surface.

Barry G Green1

  • 1Yale University School of Medicine, New Haven, Connecticut 06519, USA. green@jbpierce.org

Attention, Perception & Psychophysics
|June 16, 2009
PubMed
Summary

Low-threshold thermal nociception (LTN) can occur on the hand, similar to the forearm. Active touching, or dynamic contact, suppresses these burning or stinging sensations on the hand, though less effectively than on the forearm.

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Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects
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Last Updated: Jun 22, 2026

Tactile Semiautomatic Passive-Finger Angle Stimulator (TSPAS)
04:40

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Published on: July 30, 2020

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects
07:32

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects

Published on: September 1, 2016

Area of Science:

  • Neuroscience
  • Somatosensation
  • Thermal Perception

Background:

  • Innocuous temperature changes can trigger pain sensations like burning or stinging (low-threshold thermal nociception, LTN).
  • Dynamic tactile contact normally inhibits LTN on the forearm.

Purpose of the Study:

  • To determine if LTN is perceived on the hand.
  • To investigate if active touching suppresses LTN on the hand.

Main Methods:

  • Innocuous cold and warm temperatures were applied to the hand (fingers) and forearm.
  • Subjects either statically held or actively grasped a thermode.
  • Subjects rated thermal and nociceptive sensations and their qualities.

Main Results:

  • LTN was perceived on the hand, but less frequently and intensely than on the forearm.
  • Dynamic contact inhibited hand sensations, but less strongly than forearm sensations.
  • Temperature perception on the hand is attenuated and altered by dynamic tactile stimulation.

Conclusions:

  • LTN can be elicited on the hand.
  • Active touching modulates thermal and nociceptive perception on the hand.
  • Haptic exploration alters temperature perception quality and intensity.