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The role of coherence time in the effect of microwaves on ornithine decarboxylase activity.

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Litovitz TA, Krause D, Penafiel M, Elson EC, Mullins JM, · 1993

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Amplitude-modulated 915 MHz microwaves at 55-65 Hz approximately doubled ornithine decarboxylase activity after 8 h, but switching modulation frequencies at coherence times of 1.0 s or less abolished the enhancement.

Plain English Summary

Summary written for general audiences

The study investigated the role of coherence time in the effect of microwaves on ornithine decarboxylase activity. Amplitude-modulated 915 MHz microwaves at SAR 2.5 W/kg modulated at 55, 60, or 65 Hz approximately doubled ornithine decarboxylase activity after 8 h, and switching modulation frequencies at coherence times of 1.0 s or less abolished the enhancement while times of 10 s or longer provided full enhancement.

Exposure Details

SAR
2.5 W/kg
Source/Device
915 MHz modulated at 55, 60, or 65 Hz

Exposure Context

This study used 2.5 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: 2.5 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Extreme Concern range (Building Biology)This level is 2 times the FCC limit
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 65 Hz - 915 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 65 Hz - 915 MHzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Study Details

The aim of this study is to investigate The role of coherence time in the effect of microwaves on ornithine decarboxylase activity.

Further investigation has revealed a remarkably similar coherence time phenomenon for enhancement of...

Our results show that the microwave coherence effects are remarkably similar to those observed with ELF fields.

Cite This Study
Litovitz TA, Krause D, Penafiel M, Elson EC, Mullins JM, (1993). The role of coherence time in the effect of microwaves on ornithine decarboxylase activity. Bioelectromagnetics 14(5):395-403, 1993.
Show BibTeX
@article{ta_1993_the_role_of_coherence_1155,
  author = {Litovitz TA and Krause D and Penafiel M and Elson EC and Mullins JM and},
  title = {The role of coherence time in the effect of microwaves on ornithine decarboxylase activity.},
  year = {1993},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/8285913/},
}

Cited By (118 papers)

Quick Questions About This Study

The study aimed to investigate the role of coherence time in the effect of microwaves on ornithine decarboxylase activity.
Amplitude-modulated 915 MHz microwaves with a SAR of 2.5 W/kg were used.
Microwave fields modulated at 55, 60, or 65 Hz approximately doubled ornithine decarboxylase activity after 8 h.
Switching modulation frequencies at coherence times of 1.0 s or less abolished the enhancement, while coherence times of 10 s or longer provided full enhancement.
The microwave coherence effects were remarkably similar to those observed with ELF fields.