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Related Concept Videos

Thermosensation01:43

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Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
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Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
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A decreased body temperature can occur in patients with hypothermia and frostbite. Heat loss with extended cold exposure overpowers the body's ability to create heat, resulting in hypothermia. Core temperature readings help classify hypothermia. Mild hypothermia is temperatures between 32 °C (89.6 °F) and 35°C (95 °F) and is caused by impaired thermoregulation. Moderate hypothermia is temperatures between 28 C (82.4 °F) and 32 °C (89.6 °F) caused by...
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Here is a stepwise guide to assessing the body temperature at the temporal artery using a temporal artery thermometer
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    Area of Science:

    • Thermodynamics
    • Human Perception
    • Biophysics

    Background:

    • Temperature perception is nonlinear; rapid changes are detected more readily than slow ones.
    • Existing methods for thermal feedback lack continuous perceived cooling without net temperature change.

    Purpose of the Study:

    • To develop and validate a method for generating a continuous cooling perception.
    • To leverage the nonlinear characteristics of human temperature sensation for novel thermal feedback.

    Main Methods:

    • Utilized an array of thermal actuators with alternating rapid cooling and slow heating cycles.
    • Investigated the impact of actuator size, location, pattern, and heating/cooling timing.
    • Conducted experiments with 21 participants to assess perceived temperature changes.

    Main Results:

    • 19 out of 21 participants perceived a continuous cooling effect.
    • The perceived cooling was achieved despite no net change in average skin temperature.
    • Actuator arrangement, measurement location, and cycle times significantly influenced perception.

    Conclusions:

    • The proposed method effectively creates a false perception of continuous cooling.
    • Human perception's nonlinear nature can be manipulated for advanced thermal interfaces.
    • Further research should optimize actuator parameters for enhanced cooling illusion.