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Related Experiment Videos

Temperature topography of the brain cortex: thermoencephaloscopy.

I A Shevelev1

  • 1Department of Sensory Physiology, Russian Academy of Sciences, Moscow.

Brain Topography
|January 1, 1992
PubMed
Summary

Thermoencephaloscopy (TES) is a non-invasive functional brain imaging technique using infrared radiation. This method reveals cortical activity dynamics, aiding neuroscience and medical research.

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Area of Science:

  • Neuroscience
  • Medical Imaging
  • Physiology

Background:

  • Functional brain imaging is crucial for understanding neural activity.
  • Existing methods may be invasive or lack sufficient resolution.
  • Thermoencephaloscopy (TES) emerged in 1984 to address these limitations.

Purpose of the Study:

  • To present Thermoencephaloscopy (TES) as an advanced method for functional imaging of the cerebral cortex.
  • To highlight TES's capabilities in non-invasively recording cortical activity.
  • To demonstrate TES's potential applications in basic neuroscience and medicine.

Main Methods:

  • Utilizes improved thermovision and image processing for contact-free infrared radiation recording.
  • Achieves high temporal resolution (40 ms) and spatial resolution (up to 70 x 70 microns/pixel).
  • Records background and evoked cortical activity through an unopened skull in various species, including humans.

Main Results:

  • TES detects activated (heated) and deactivated (cooled) cortical zones with high precision.
  • Identifies the position, size, and dynamics of cortical zones during various stimuli and activities.
  • Records spreading waves across the cortex (up to 30 mm/sec) and detects pathological processes like tumors and epileptic foci.

Conclusions:

  • Thermoencephaloscopy is a dynamic, non-invasive, and contact-free functional imaging method.
  • It offers high temporal and spatial resolution, making it sensitive for detecting cortical activity and pathologies.
  • TES is a valuable tool for basic neuroscience research and clinical medicine.

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