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Related Experiment Videos

Referred thermal sensations: warmth versus cold

B G Green

    Sensory Processes
    |September 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    Thermal referral occurs between two stimuli, with warmth sensations referring more strongly than cold. This phenomenon shows tactile information influences thermal perception, suggesting separate nerve fibers carry locus and quality data.

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    Area of Science:

    • Psychology
    • Neuroscience
    • Sensory Perception

    Background:

    • Thermal referral is a phenomenon where thermal sensations are perceived at the location of nearby tactile stimuli.
    • Previous research demonstrated this with three stimulators.

    Purpose of the Study:

    • To further investigate thermal referral between two contact stimuli.
    • To determine how factors like temperature, distance, and location affect thermal referral.

    Main Methods:

    • Experiments were conducted using two contact stimuli on the arm and fingers.
    • Measurements were taken to assess the strength and direction of thermal referral.

    Main Results:

    • Warmth referrals were stronger than cold referrals on the arm and fingers.

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  • Referral of warmth was minimally affected by increasing distance between stimuli.
  • Referral on fingertips was stronger when directed away from the first digit.
  • Patterns of referral differed for warmth and cold across fingers and were independent of peripheral innervation.

    • Conclusions:

    • Tactile information regarding stimulus location is accessible to thermal senses.
    • This suggests that information about stimulus locus and quality may be transmitted via separate nerve fibers.