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Related Concept Videos

Equipments Used to Measure Body Temperature01:13

Equipments Used to Measure Body Temperature

Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit.
Glass-bulb Thermometer:
Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...
Thermal Stress01:09

Thermal Stress

If the temperature of an object is changed while it is prevented from expanding or contracting, the object is subjected to stress. The stress is compressive if the object expands in the absence of constraint and tensile if it contracts. This stress resulting from temperature change is known as thermal stress. It can be quite large and can cause damage. To avoid this stress, engineers may design components so they can expand and contract freely. For instance, on highways, gaps are deliberately...
Assessing Body Temperature - Tympanic membrane01:14

Assessing Body Temperature - Tympanic membrane

Assessing tympanic membrane temperature involves using a tympanic membrane thermometer (TMT). Here is a step-by-step guide:
Step 1: Begin by practicing good hand hygiene to prevent the transmission of microorganisms.
Step 2: Turn on the thermometer and wait until the ready sign appears on the screen to ensure accurate measurement.
Step 3: Slide the probe cover in place to prevent cross-contamination.
Step 4: Instruct the patient to tilt their head to the side for comfort and check for cerumen...
Mechanical Systems01:22

Mechanical Systems

Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically described...
Mechanisms of Heat Transfer II01:20

Mechanisms of Heat Transfer II

In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...
Thermosensation01:43

Thermosensation

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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Related Experiment Video

Updated: May 25, 2026

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

Liquid cooling system for the vibro-tactile threshold device.

Erin M Parsons1, Christian Redd, Minu S Gandhi

  • 1Univeristy of Utah, Salt Lake City, UT 84112, USA. parsons.220@gmail.com

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
|January 19, 2012
PubMed
Summary
This summary is machine-generated.

A new liquid cooling system was added to the Vibrotactile Threshold Evaluator for the Workplace (VTEW) to prevent probe overheating during carpal tunnel syndrome screening. This improves subject comfort and testing accuracy.

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

  • Biomedical Engineering
  • Neuroscience
  • Occupational Health

Background:

  • Vibrotactile threshold testing assesses human somatosensory pathways.
  • The Vibrotactile Threshold Evaluator for the Workplace (VTEW) was developed for carpal tunnel syndrome screening.
  • The VTEW's linear actuator caused probe discomfort due to heat buildup.

Purpose of the Study:

  • To address probe overheating and subject discomfort during VTEW operation.
  • To implement a cooling system for the VTEW's tactile probe.
  • To maintain device functionality for workplace carpal tunnel syndrome screening.

Main Methods:

  • A liquid cooling system was designed and integrated into the VTEW.
  • The cooling system's effectiveness in temperature regulation was evaluated.
  • The impact of the cooling system on device portability was assessed.

Main Results:

  • The liquid cooling system successfully maintained a steady-state probe temperature of 36 °C.
  • Continuous operation of the probe was achieved without erroneous vibrations.
  • The cooling system, however, reduced the device's overall portability.

Conclusions:

  • Liquid cooling effectively resolves overheating issues in the VTEW, enhancing subject comfort.
  • Further development is needed to optimize the cooling system for portability.
  • Portable vibrotactile threshold testing can aid in early carpal tunnel syndrome detection in the workplace.