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Experimental Study of Relationship between Biological Hazards of Low-Dose Radiofrequency Exposure and Energy Flow Density in Spirostomum Ambiguum Infusoria Exposed at a Mobile Connection Frequency (1 GHz)

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Authors not listed · 2011

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Radiofrequency exposure at 1 GHz with energy flow densities of 5 μW/cm(2) and 50 μW/cm(2) reduced motor activity in Spirostomum ambiguum, with safe exposure durations of 8-9 h and 10 min respectively.

Plain English Summary

Summary written for general audiences

Researchers exposed Spirostomum ambiguum infusoria to 1 GHz radiofrequency at energy flow densities of 5 μW/cm(2) and 50 μW/cm(2). Both exposure levels caused a reduction in motor activity that appeared in a jump-wise manner after a certain exposure duration and did not increase with longer exposure. The safe exposure duration was 8-9 h and 10 min at 5 and 50 μW, respectively.

Why This Matters

The authors describe the findings as innovation data showing harmful biological effects at very low radiofrequency exposure of 5 μW/cm(2). They note a threshold form of biological reaction, the presence of safe exposure periods, and a clear-cut relationship between those periods and energy flow density.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 1 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 1 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (2011). Experimental Study of Relationship between Biological Hazards of Low-Dose Radiofrequency Exposure and Energy Flow Density in Spirostomum Ambiguum Infusoria Exposed at a Mobile Connection Frequency (1 GHz).
Show BibTeX
@article{experimental_study_of_relationship_between_biological_hazards_of_low_dose_radiofrequency_exposure_and_energy_flow_density_in_spirostomum_ambiguum_infusoria_exposed_at_a_mobile_connection_frequency_1_g_ce727,
  author = {Unknown},
  title = {Experimental Study of Relationship between Biological Hazards of Low-Dose Radiofrequency Exposure and Energy Flow Density in Spirostomum Ambiguum Infusoria Exposed at a Mobile Connection Frequency (1 GHz)},
  year = {2011},
  doi = {10.1007/s10517-011-1361-5},
  
}

Quick Questions About This Study

The study used Spirostomum ambiguum infusoria exposed to a mobile connection frequency of 1 GHz.
The two energy flow densities tested were 5 μW/cm(2), which is 2-fold below the maximum permissible level, and 50 μW/cm(2), which is 5-fold surpassing this level.
The reduction in motor activity developed in a jump-wise manner after a certain exposure duration and did not increase with further prolongation of exposure.
The safe exposure duration was 8-9 h and 10 min at 5 and 50 μW, respectively.
The authors concluded that the data on harmful effects at very low exposure, the threshold reaction form, safe exposure periods, and their relationship to energy flow density are interesting for theoretical understanding and for evaluating permissible exposure levels.