RF-010Original text reviewed
Exposure related changes in sleep EEG
The reported finding
A significant exposure-level trend occurred in fast spindle EEG power and 1-back task speed. Only the 5 W/kg EEG condition differed significantly from sham in the separate post-hoc comparison.
Reading it carefully
The 0.2 W/kg condition alone is not a demonstrated harmful threshold. Sleep architecture was unchanged; some cognitive outcomes improved.
Inside the study
Exposure conditions
900 MHz pulse-modulated signal; 0.2 or 5 W/kg peak SAR averaged over 10 g; 30 minutes before sleep.
Design & controls
15 healthy men; randomised double-blind crossover, one week between sessions.
Related research & shared cohorts
Zurich programme; RF-012 related. A physiological response is not equivalent to diagnosed disease.
The protection question raised
Does a reproducible change in sleeping brain activity affect sleep quality or next-day function? A dose-related EEG response without demonstrated sleep impairment does not itself identify a harmful exposure level.
Source verification
Full indexed article body reviewed
Where to find the result
Results; Figures 1-3; Table 1 dosimetry caption
Editorial notices
Primary PubMed linked-notice record checked 20 Oct 2026; no correction, concern or retraction linked at check. This is not an exhaustive publisher-history certification.
Funding
Not established from retrieved material.
Conflicts of interest
Not established from retrieved material.
Original publication
REGEL SJ, TINGUELY G, SCHUDERER J, ADAM M, KUSTER N, LANDOLT HP, ACHERMANN P. Pulsed radio-frequency electromagnetic fields: dose-dependent effects on sleep, the sleep EEG and cognitive performance. Journal of Sleep Research. 2007;16(3):253-258. doi:10.1111/j.1365-2869.2007.00603.x.