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Do signals of a hand-held TETRA transmitter affect cognitive performance, well-being, mood or somatic complaints in healthy young men? Results of a randomized double-blind cross-over provocation study.

No Effects Found

Sauter C, Eggert T, Dorn H, Schmid G, Bolz T, Marasanov A, Hansen ML, Peter A, Danker-Hopfe H · 2015

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The study found no negative impact of short-term TETRA exposure on cognitive function and well-being in healthy young men.

Plain English Summary

Summary written for general audiences

Researchers conducted a double-blind cross-over study with 30 healthy young men exposed to TETRA signals at 1.5 W/kg and 6.0 W/kg and sham. Exposure lasted 2.5 hours at 385 MHz with specific absorption rates of 1.5 and 6.0 W/kg. Attention was unchanged in two of three tasks, while working memory showed significant changes in two of four subtasks. 5 out of 35 tested parameters showed significant results, four of which indicated improved performance. Mood, well-being, and subjective somatic complaints were not affected by TETRA exposure.

Why This Matters

The study aimed to investigate acute effects of two TETRA signal levels on cognitive function and well-being. The researchers concluded that short-term TETRA exposure did not negatively affect cognitive function or well-being.

Exposure Details

SAR
1.5 and 6 W/kg
Source/Device
TETRA 385 MHz
Exposure Duration
2.5 h

Exposure Context

This study used 1.5 and 6 W/kg for SAR (device absorption):

Building Biology guidelines are practitioner-based limits from real-world assessments. BioInitiative Report recommendations are based on peer-reviewed science. Check Your Exposure to compare your own measurements.

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 1.5 and 6 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Extreme Concern range (Building Biology)FCC limit is 1 times higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 385 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 385 MHzPower lines50/60 HzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Study Details

To investigate possible acute effects of electromagnetic fields (EMF) of two different levels of TETRA hand-held transmitter signals on cognitive function and well-being in healthy young males.

In the present double-blind cross-over study possible effects of short-term (2.5 h) EMF exposure of ...

Attention remained unchanged in two out of three tasks. In the working memory significant changes we...

The results of the present study do not indicate a negative impact of a short-term EMF-effect of TETRA on cognitive function and well-being in healthy young men.

Cite This Study
Sauter C, Eggert T, Dorn H, Schmid G, Bolz T, Marasanov A, Hansen ML, Peter A, Danker-Hopfe H (2015). Do signals of a hand-held TETRA transmitter affect cognitive performance, well-being, mood or somatic complaints in healthy young men? Results of a randomized double-blind cross-over provocation study. Environ Res. 140:85-94, 2015.
Show BibTeX
@article{c_2015_do_signals_of_a_2805,
  author = {Sauter C and Eggert T and Dorn H and Schmid G and Bolz T and Marasanov A and Hansen ML and Peter A and Danker-Hopfe H},
  title = {Do signals of a hand-held TETRA transmitter affect cognitive performance, well-being, mood or somatic complaints in healthy young men? Results of a randomized double-blind cross-over provocation study.},
  year = {2015},
  
  url = {https://www.sciencedirect.com/science/article/abs/pii/S0013935115000997},
}

Quick Questions About This Study

The study used a double-blind cross-over design with 30 healthy young men tested over nine days under three exposure conditions.
Participants were exposed to sham, TETRA at 1.5 W/kg, and TETRA at 6.0 W/kg for 2.5 hours at 385 MHz.
Attention was unchanged in two of three tasks, while working memory showed significant changes in two of four subtasks, with 5 out of 35 parameters showing significant results, four indicating improvement.
Mood, well-being, and subjective somatic complaints were not affected by TETRA exposure.
The researchers concluded that short-term TETRA exposure did not negatively affect cognitive function or well-being in healthy young men.