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Dynamic Mapping of the Temperature Fields of the Brain

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Abstract

The thermal fields and biopotentials of the brain were studied in 11 healthy subjects in the states of quiet wakefulness and sleep (stages I–IV). To this end, a new method of dynamic radiomapping was applied in parallel with the traditional method of EEG recording. The method of dynamic radiomapping is based on measuring the brain thermal radiation in the decimeter (40 cm) wave range. It allows the integral brain temperature to be recorded from deep inside and up to 2.5 cm from the surface with the help of 12 antennas applied to the skin. The temperature of the cerebral cortex of the human subject in the state of quiet wakefulness varied stochastically in the range of deviations of ±0.3°C in all areas. Changes in the brain functional state, i.e., the transition from wakefulness to sleep, were accompanied by either an increase in the variation range to ±0.5°C or the appearance of stationary foci of heating (by 0.9–1.3°C) or cooling (by –0.7°C) of individual locations and amplitudes.

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Authors and Affiliations

  1. Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, ul. Butlerova 5a, Moscow, 117865, Russia

    E. V. Petrova

  2. Institute of Diagnostics and Surgery, Ministry of Public Health of the Russian Federation, Moscow, Russia

    N. B. Kholodova

  3. Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Mokhovaya ul. 11, Moscow, 103907, Russia

    A. G. Sel'skii, V. I. Pasechnik & A. V. Yanovich

Authors
  1. E. V. Petrova
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  2. N. B. Kholodova
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  3. A. G. Sel'skii
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  4. V. I. Pasechnik
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  5. A. V. Yanovich
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Petrova, E.V., Kholodova, N.B., Sel'skii, A.G. et al. Dynamic Mapping of the Temperature Fields of the Brain. Human Physiology 27, 17–23 (2001). https://doi.org/10.1023/A:1007147022010

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  • DOI: https://doi.org/10.1023/A:1007147022010

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