Medical/biological Study (experimental study)
Effects of mobile phone signals over BOLD response while performing a cognitive task. med./biol. By: Curcio G, Nardo D, Perrucci MG, Pasqualetti P, Chen TL, Del Gratta C, Romani GL, Rossini PM
Published in: Clin Neurophysiol 2012; 123 (1): 129 - 136 ( PubMed Entry , Journal web site )
Aim of study (according to author)
To study the effects of an exposure to a GSM signal on brain BOLD (blood-oxygen-level dependent) response, as well as its time course while performing a reaction time task.
12 young men participated (age range: 19-25) and underwent two sessions separated by one week (exposure/sham exposure session).
General category: mobile communication system, digital mobile phone, GSM, PW (pulsed wave)
| 902.4 MHz |
exposure duration: continuous for 45 min
|power: 2 W peak value|
power: 0.25 W average over time
SAR: 1.25 W/kg (at superficial level)
SAR: 0.5 W/kg max value (at 2 cm depth in a phantom)
SAR: 0.212 W/kg min value (at 5 cm depth in a phantom)
FIELD View further expo parameters
partial body exposure: right ear
investigation on living organism
- effects on the neurological system: brain BOLD (blood-oxygen-level dependent) response (fMRI)
- cognitive/behavioral endpoints: somatosensory reaction time task (go/no-go task: reaction (pressing a button) to electrical stimulations (single or paired electrical pulses) delivered to the median nerve of both wrists)
investigated organ system: brain/CNS
time of investigation: before and after exposure
Main outcome of study (according to author)
The data did not detect any brain activity changes by mobile phones. Also reaction times in the somatosensory task were not affected.
In conclusion, no changes in BOLD response have been observed as a consequence of radiofrequency electromagnetic field exposure.
(Study character: medical/biological study, experimental study, full/main study, double-blind study)
Study funded by
- Lottomatica, Italy
- Monopoli di Stato, Italy
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Glossary: behavioral, biological, blood, brain, CNS, cognitive, digital, double-blind study, ear, electrical, electromagnetic field, endpoint, exposure, fMRI, full/main study, GSM, human, median, mobile communication, mobile phones, nerve, neurological, organism, oxygen, partial body exposure, phantom, power, pulsed, pulses, PW, radiofrequency, reaction times, SAR, session, sham exposure, signal, somatosensory, Stimulations
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