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Medical/biological Study (experimental study)

Effects of Global Communication system radio-frequency fields on Well Being and Cognitive Functions of human subjects with and without subjective complaints. med./biol.

By: Zwamborn APM, Vossen SHJ, van Leersum BJA, Ouwens MA, Makel WN
Published in: TNO Reports 2003(FEL03C148): 1 - 89 (journal not peer reviewed)

Aim of study (according to author)
To study general symptoms and cognitive functions with and without exposure to GSM and UMTS-like fields in subjects presenting with complaints subjectively attributed to GSM fields.
Background/further details:
This study is the so-called TNO study.
72 subjects (36 self-reported electrosensitive, 36 non-electrosensitive subjects) participated.

Endpoints

Exposure
General category: mobile communication system, cell phone base station, GSM, UMTS, CDMA, TDMA

Field characteristicsParameters
field 1: 945 MHz
pulsed (PW)
exposure duration: continuous for 20 min
electric field strength: 1 V/m peak value
electric field strength: 0.71 V/m effective value
SAR: 0.045 mW/kg max value (10 g)
SAR: 0.000513 µW/kg average over mass (partial body)
field 2: 1840 MHz
pulsed (PW)
exposure duration: continuous for 20 min
electric field strength: 1 V/m peak value
electric field strength: 0.71 V/m effective value
SAR: 0.082 mW/kg max value (10 g)
SAR: 0.000383 µW/kg average over mass (partial body)
field 3: 2140 MHz
exposure duration: continuous for 20 min
electric field strength: 1 V/m peak value
electric field strength: 1 V/m effective value
SAR: 0.078 mW/kg max value (10 g)
SAR: 0.064 mW/kg max value (10 g) (front illumination)
SAR: 0.000316 µW/kg average over mass (partial body)
SAR: 0.000327 µW/kg average over mass (partial body) (front illumination)

FIELD View further expo parameters

Exposed system:
human
whole body exposure

Methods
Endpoint/Measurement parameters/Methodology

investigation on living organism
investigated organ system: brain/CNS

time of investigation: before, during and after exposure

Main outcome of study (according to author)
A statistically significant relation between UMTS-like fields with a field strength of 1 V/m and an effect on the well-being was found (lower overall well-being). Further, a number of significant effects was revealed in the cognitive tasks.

(Study character: medical/biological study, experimental study, full/main study, double-blind study, cross-over study)

Study funded by

Related articles i
Glossary: attention, base station, behavioral, biological, brain, CDMA, cell phone, CNS, cognitive, cross-over study, double-blind study, effective value, electric field strength, electrosensitive, endpoint, exposure, field strength, full/main study, GSM, human, hypersensitivity, memory, mobile communication, organism, pulsed, PW, questionnaire, reaction time, SAR, significant, statistically, subjective complaints, subjects, symptoms, TDMA, UMTS, visual, whole body exposure
Exposure: mobile communication system, cell phone base station, GSM, UMTS, CDMA, TDMA

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