Mobile phone 'talk-mode' signal delays EEG-determined sleep onset.
Hung CS, Anderson C, Horne JA, McEvoy P · 2007
View Original AbstractAfter exposure to a mobile phone talk-mode signal, sleep latency was markedly and significantly delayed compared to listen and sham modes.
Plain English Summary
Researchers exposed 10 healthy young adults to talk, listen, standby, or sham signal modes for 30 minutes, then gave them a 90-minute sleep opportunity. Sleep latency after talk mode was markedly and significantly delayed beyond listen and sham modes. This condition effect was also evident in 1–4 Hz EEG frontal power, a frequency range described as particularly sensitive to sleep onset. There was no condition effect for subjective sleepiness.
Why This Matters
The study used a GSM900 mobile phone controlled by a base-station simulator, transmitted at 12.5% (23 dBm) of maximum power. Participants were sleep restricted to 6 hours and lay in a sound-proof, lit bedroom with a thermally insulated silent phone beside the right ear during exposure. Sleep onset was assessed using visually scored latency to onset of stage 2 sleep and EEG power spectral analysis. Subjective sleepiness ratings were obtained every 3 minutes before, during, and after exposure, but showed no condition effect. The researchers noted that 2, 8, and 217 Hz modulation may differentially affect sleep onset.
Exposure Details
- SAR
- 0.133, 0.015, 0.001 W/kg
- Source/Device
- GSM900 mobile phone
- Exposure Duration
- continuous for 30 min
Where This Falls on the Concern Scale
Study Details
To study about mobile phone ‘talk-mode’ signal delays EEG-determined sleep onset.
We used a GSM900 mobile phone controlled by a base-station simulator and a test SIM card to simulate...
There was no condition effect for subjective sleepiness. Post-exposure, sleep latency after talk mod...
Show BibTeX
@article{cs_2007_mobile_phone_talkmode_signal_109,
author = {Hung CS and Anderson C and Horne JA and McEvoy P},
title = {Mobile phone 'talk-mode' signal delays EEG-determined sleep onset.},
year = {2007},
url = {https://www.sciencedirect.com/science/article/abs/pii/S0304394007006003},
}