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Related Concept Videos

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...
Assessing Body Temperature - Tympanic membrane01:14

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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.
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Increased Body Temperature01:25

Increased Body Temperature

A body temperature above  38°C  (100.4 °F) is known as fever or pyrexia, and a person with fever is termed 'febrile.' Typically, the hypothalamus, a part of the brain that acts as the body's thermostat, regulates body temperature through a thermoregulatory setpoint. It receives signals from cold and warm thermal receptors throughout the body and adjusts the body's temperature accordingly. Fever occurs when this hypothalamic setpoint is altered, usually in response to an infection or illness.
Homeostatic Imbalances in Body Temperature01:19

Homeostatic Imbalances in Body Temperature

Hyperthermia occurs when the body's temperature becomes unusually high, often due to heat exposure, intense physical activity, or certain illnesses. This condition can create a dangerous cycle where elevated body temperature increases the metabolic rate, generating more heat and potentially leading to organ failure and brain damage. A severe form of hyperthermia, called heat stroke, can raise body temperature to life-threatening levels. Fever, on the other hand, is a controlled form of...

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Related Experiment Video

Updated: May 30, 2026

Method for Simultaneous fMRI/EEG Data Collection during a Focused Attention Suggestion for Differential Thermal Sensation
06:33

Method for Simultaneous fMRI/EEG Data Collection during a Focused Attention Suggestion for Differential Thermal Sensation

Published on: January 5, 2014

Hyperthermia impaired pre-attentive processing: an auditory MMN study.

Gang Sun1, Li Li, Min Li

  • 1Department of Medical Imaging, Jinan Military General Hospital, 25 Shifan Rd., Jinan, Shandong Province 250031, China. cjr.sungang@vip.163.com

Neuroscience Letters
|August 9, 2011
PubMed
Summary
This summary is machine-generated.

Passive heat exposure impairs pre-attentive processing. This study found that heat significantly reduced mismatch negativity (MMN) in participants, suggesting MMN can assess cognitive function in hot environments.

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Last Updated: May 30, 2026

Method for Simultaneous fMRI/EEG Data Collection during a Focused Attention Suggestion for Differential Thermal Sensation
06:33

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Published on: January 5, 2014

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10:09

Mapping the After-effects of Theta Burst Stimulation on the Human Auditory Cortex with Functional Imaging

Published on: September 12, 2012

Area of Science:

  • Neuroscience
  • Environmental Health
  • Cognitive Psychology

Background:

  • Pre-attentive processing, crucial for cognitive function, may be vulnerable to environmental stressors.
  • Mismatch negativity (MMN) is an electrophysiological marker reflecting early auditory processing and cognitive function.

Purpose of the Study:

  • To investigate the impact of passive heat exposure on pre-attentive auditory processing.
  • To determine if MMN can serve as an indicator of cognitive changes in hot environments.

Main Methods:

  • 36 young male undergraduates were divided into control (25°C) and heat (50°C) groups for 1-hour exposure.
  • Mismatch negativity (MMN) event-related potentials (ERPs) were recorded before and after heat exposure.

Main Results:

  • No significant group differences in MMN were observed before heat exposure.
  • Following heat exposure, the heat group showed a significant decline in MMN compared to the control group.

Conclusions:

  • Passive heat exposure can negatively affect pre-attentive auditory processing.
  • MMN is a sensitive index for assessing cognitive functioning under thermal stress.