Acute Exposure to Terrestrial Trunked Radio (TETRA) has effects on the electroencephalogram and electrocardiogram, consistent with vagal nerve stimulation

Adrian P. Burgess, Nathalie C. Fouquet, Stefano Seri, Malcolm B. Hawken, Andrew Heard, David Neasham, Mark P. Little, Paul Elliott

Research output: Contribution to journalArticle

Abstract

BACKGROUND: Terrestrial Trunked Radio (TETRA) is a telecommunications system widely used by police and emergency services around the world. The Stewart Report on mobile telephony and health raised questions about possible health effects associated with TETRA signals. This study investigates possible effects of TETRA signals on the electroencephalogram and electrocardiogram in human volunteers.

METHODS: Blinded randomized provocation study with a standardized TETRA signal or sham exposure. In the first of two experiments, police officers had a TETRA set placed first against the left temple and then the upper-left quadrant of the chest and the electroencephalogram was recorded during rest and active cognitive processing. In the second experiment, volunteers were subject to chest exposure of TETRA whilst their electroencephalogram and heart rate variability derived from the electrocardiogram were recorded.

RESULTS: In the first experiment, we found that exposure to TETRA had consistent neurophysiological effects on the electroencephalogram, but only during chest exposure, in a pattern suggestive of vagal nerve stimulation. In the second experiment, we observed changes in heart rate variability during exposure to TETRA but the electroencephalogram effects were not replicated.

CONCLUSIONS: Observed effects of exposure to TETRA signals on the electroencephalogram (first experiment) and electrocardiogram are consistent with vagal nerve stimulation in the chest by TETRA. However given the small effect on heart rate variability and the lack of consistency on the electroencephalogram, it seems unlikely that this will have a significant impact on health. Long-term monitoring of the health of the police force in relation to TETRA use is on-going.

LanguageEnglish
Pages461-469
Number of pages9
JournalEnvironmental Research
Volume150
Early online date13 Jul 2016
DOIs
Publication statusPublished - Oct 2016

Fingerprint

Vagus Nerve Stimulation
Electroencephalography
Electrocardiography
Radio
radio
Police
Law enforcement
Thorax
Health
Heart Rate
experiment
Experiments
Volunteers
exposure
effect
police force
Emergency services
Telecommunications
Telecommunication systems
Telemedicine

Bibliographical note

© 2016 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Supplementary data associated with this article can be found in
the online version at http://dx.doi.org/10.1016/j.envres.2016.06.031

Keywords

  • electromagnetic fields exposure
  • radio frequency
  • occupational cohort
  • Neurophysiological effects

Cite this

Burgess, Adrian P. ; Fouquet, Nathalie C. ; Seri, Stefano ; Hawken, Malcolm B. ; Heard, Andrew ; Neasham, David ; Little, Mark P. ; Elliott, Paul. / Acute Exposure to Terrestrial Trunked Radio (TETRA) has effects on the electroencephalogram and electrocardiogram, consistent with vagal nerve stimulation. In: Environmental Research. 2016 ; Vol. 150. pp. 461-469.
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Acute Exposure to Terrestrial Trunked Radio (TETRA) has effects on the electroencephalogram and electrocardiogram, consistent with vagal nerve stimulation. / Burgess, Adrian P.; Fouquet, Nathalie C.; Seri, Stefano; Hawken, Malcolm B.; Heard, Andrew; Neasham, David; Little, Mark P.; Elliott, Paul.

In: Environmental Research, Vol. 150, 10.2016, p. 461-469.

Research output: Contribution to journalArticle

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T1 - Acute Exposure to Terrestrial Trunked Radio (TETRA) has effects on the electroencephalogram and electrocardiogram, consistent with vagal nerve stimulation

AU - Burgess, Adrian P.

AU - Fouquet, Nathalie C.

AU - Seri, Stefano

AU - Hawken, Malcolm B.

AU - Heard, Andrew

AU - Neasham, David

AU - Little, Mark P.

AU - Elliott, Paul

N1 - © 2016 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Supplementary data associated with this article can be found in the online version at http://dx.doi.org/10.1016/j.envres.2016.06.031

PY - 2016/10

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N2 - BACKGROUND: Terrestrial Trunked Radio (TETRA) is a telecommunications system widely used by police and emergency services around the world. The Stewart Report on mobile telephony and health raised questions about possible health effects associated with TETRA signals. This study investigates possible effects of TETRA signals on the electroencephalogram and electrocardiogram in human volunteers.METHODS: Blinded randomized provocation study with a standardized TETRA signal or sham exposure. In the first of two experiments, police officers had a TETRA set placed first against the left temple and then the upper-left quadrant of the chest and the electroencephalogram was recorded during rest and active cognitive processing. In the second experiment, volunteers were subject to chest exposure of TETRA whilst their electroencephalogram and heart rate variability derived from the electrocardiogram were recorded.RESULTS: In the first experiment, we found that exposure to TETRA had consistent neurophysiological effects on the electroencephalogram, but only during chest exposure, in a pattern suggestive of vagal nerve stimulation. In the second experiment, we observed changes in heart rate variability during exposure to TETRA but the electroencephalogram effects were not replicated.CONCLUSIONS: Observed effects of exposure to TETRA signals on the electroencephalogram (first experiment) and electrocardiogram are consistent with vagal nerve stimulation in the chest by TETRA. However given the small effect on heart rate variability and the lack of consistency on the electroencephalogram, it seems unlikely that this will have a significant impact on health. Long-term monitoring of the health of the police force in relation to TETRA use is on-going.

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