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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: Jul 14, 2026

Investigating the Function of Deep Cortical and Subcortical Structures Using Stereotactic Electroencephalography: Lessons from the Anterior Cingulate Cortex
09:00

Investigating the Function of Deep Cortical and Subcortical Structures Using Stereotactic Electroencephalography: Lessons from the Anterior Cingulate Cortex

Published on: April 15, 2015

Cortical oscillatory changes during warming and heating in humans.

A Stancák1, H Polácek, J Vrána

  • 1Department of Normal, Pathological and Clinical Physiology, Third Faculty of Medicine, Charles University Prague, Prague, Czech Republic.

Neuroscience
|June 15, 2007
PubMed
Summary

This study reveals distinct brain responses to warming and heating using electroencephalography (EEG). Different cortical oscillation patterns emerge during temperature changes, potentially preparing for withdrawal or suppressing movement.

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Infant Auditory Processing and Event-related Brain Oscillations
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Investigating the Function of Deep Cortical and Subcortical Structures Using Stereotactic Electroencephalography: Lessons from the Anterior Cingulate Cortex
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06:34

Infant Auditory Processing and Event-related Brain Oscillations

Published on: July 1, 2015

Area of Science:

  • Neuroscience
  • Somatosensory Processing
  • Electrophysiology

Background:

  • Warmth and heat are detected by distinct cutaneous receptors.
  • Understanding the neural basis of thermal perception is crucial for sensory neuroscience.
  • Cortical activation patterns during thermal stimuli require detailed investigation.

Purpose of the Study:

  • To differentiate cortical activation patterns between warming and heating stimuli.
  • To analyze the temporal dynamics of electroencephalographic (EEG) oscillations during thermal stimulation.
  • To investigate the role of specific brain regions in processing different temperature intensities.

Main Methods:

  • Applied controlled warm (32-42°C) and heat (32-50.5°C) stimuli to the thenar eminence.
  • Recorded EEG from 111 scalp electrodes in 12 healthy participants.
  • Utilized event-related desynchronization and low-resolution electromagnetic tomography for analysis.

Main Results:

  • Warming decreased 10 and 20 Hz oscillations in contralateral sensorimotor/premotor cortices; heating increased 20 Hz oscillations in anterior cingulate/premotor cortex.
  • Heating induced more pronounced decreases in 10 and 20 Hz oscillations over sensorimotor/premotor areas.
  • Heating also increased 20 Hz oscillations originating in the posterior cingulate cortex.

Conclusions:

  • Biphasic changes in cortical oscillations correlate with distinct warming and heating phases.
  • Decreased sensorimotor/premotor oscillations may prepare for motor withdrawal from noxious heat.
  • Increased cingulate cortex oscillations might suppress unwanted movements during thermal challenges.