No effect of TETRA hand portable transmission signals on human cognitive function and symptoms

Ingunn S. Riddervold; Søren K. Kjærgaard; Gert F. Pedersen; Niels T. Andersen; Ondrej Franek; Anders D. Pedersen; Torben Sigsgaard; Robert Zachariae; Lars Mølhave; Jørgen B. Andersen

doi:10.1002/bem.20571

No effect of TETRA hand portable transmission signals on human cognitive function and symptoms

Ingunn S. Riddervold, Søren K. Kjærgaard, Gert F. Pedersen, Niels T. Andersen, Ondrej Franek, Anders D. Pedersen, Torben Sigsgaard, Robert Zachariae, Lars Mølhave, Jørgen B. Andersen

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

Abstract

Abstract Current radio frequency radiation exposure guidelines rest on well-established thermal effects. However, recent research into analogue and digital transmission fields at levels covered by the exposure guidelines has indicated possible detrimental effects on human cognitive performance. To investigate this, we conducted a controlled climate chamber study of possible changes in cognitive performance in healthy volunteers exposed to transmission signals from TETRA hand portables (TETRA handsets). The trial deployed a balanced, randomized, double-blinded cross-over design. Performance on different paper-and-pencil, auditory and computer-based cognitive tasks was monitored in 53 male volunteers (mean age 36.41 years, SD 8.35) during 45-min exposure to a TETRA handset and sham control signals remotely controlled from a laboratory more than 100?km away. The main cognitive outcome was the Trail Making B (TMB) test. In addition, the participants completed a computer-based questionnaire measuring self-reported psychological and physical symptoms. No statistically significant differences (P?

Originalsprog	Engelsk
Tidsskrift	Bioelectromagnetics
Vol/bind	31
Udgave nummer	5
Sider (fra-til)	380-390
ISSN	0197-8462
DOI	https://doi.org/10.1002/bem.20571
Status	Udgivet - 2010
Udgivet eksternt	Ja

Emneord

cognitive function
exposure study
humans
symptoms
TETRA

Dokumenter og links

10.1002/bem.20571

SDU link

Tjek adgangen til materialet i Syddansk Universitetsbiblioteks søgemaskine

Citationsformater

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title = "No effect of TETRA hand portable transmission signals on human cognitive function and symptoms",

abstract = "Current radio frequency radiation exposure guidelines rest on well‐established thermal effects. However, recent research into analogue and digital transmission fields at levels covered by the exposure guidelines has indicated possible detrimental effects on human cognitive performance. To investigate this, we conducted a controlled climate chamber study of possible changes in cognitive performance in healthy volunteers exposed to transmission signals from TETRA hand portables (TETRA handsets). The trial deployed a balanced, randomized, double‐blinded cross‐over design. Performance on different paper‐and‐pencil, auditory and computer‐based cognitive tasks was monitored in 53 male volunteers (mean age 36.41 years, SD 8.35) during 45‐min exposure to a TETRA handset and sham control signals remotely controlled from a laboratory more than 100 km away. The main cognitive outcome was the Trail Making B (TMB) test. In addition, the participants completed a computer‐based questionnaire measuring self‐reported psychological and physical symptoms. No statistically significant differences (P < 0.05) between the TETRA and sham conditions were found for either TMB (estimated difference 3.8%, confidence interval (CI) −1.6% to 9.2%) or any of the remaining cognitive tasks or symptoms. In conclusion, we found no evidence that brief exposure to hand‐held TETRA transmitters' affects human cognitive function or subjective symptoms.",

keywords = "cognitive function, exposure study, humans, symptoms, TETRA",

author = "Riddervold, {Ingunn S.} and Kj{\ae}rgaard, {S{\o}ren K.} and Pedersen, {Gert F.} and Andersen, {Niels T.} and Ondrej Franek and Pedersen, {Anders D.} and Torben Sigsgaard and Robert Zachariae and Lars M{\o}lhave and Andersen, {J{\o}rgen B.}",

year = "2010",

doi = "10.1002/bem.20571",

language = "English",

volume = "31",

pages = "380--390",

journal = "Bioelectromagnetics",

issn = "0197-8462",

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TY - JOUR

T1 - No effect of TETRA hand portable transmission signals on human cognitive function and symptoms

AU - Riddervold, Ingunn S.

AU - Kjærgaard, Søren K.

AU - Pedersen, Gert F.

AU - Andersen, Niels T.

AU - Franek, Ondrej

AU - Pedersen, Anders D.

AU - Sigsgaard, Torben

AU - Zachariae, Robert

AU - Mølhave, Lars

AU - Andersen, Jørgen B.

PY - 2010

Y1 - 2010

N2 - Current radio frequency radiation exposure guidelines rest on well‐established thermal effects. However, recent research into analogue and digital transmission fields at levels covered by the exposure guidelines has indicated possible detrimental effects on human cognitive performance. To investigate this, we conducted a controlled climate chamber study of possible changes in cognitive performance in healthy volunteers exposed to transmission signals from TETRA hand portables (TETRA handsets). The trial deployed a balanced, randomized, double‐blinded cross‐over design. Performance on different paper‐and‐pencil, auditory and computer‐based cognitive tasks was monitored in 53 male volunteers (mean age 36.41 years, SD 8.35) during 45‐min exposure to a TETRA handset and sham control signals remotely controlled from a laboratory more than 100 km away. The main cognitive outcome was the Trail Making B (TMB) test. In addition, the participants completed a computer‐based questionnaire measuring self‐reported psychological and physical symptoms. No statistically significant differences (P < 0.05) between the TETRA and sham conditions were found for either TMB (estimated difference 3.8%, confidence interval (CI) −1.6% to 9.2%) or any of the remaining cognitive tasks or symptoms. In conclusion, we found no evidence that brief exposure to hand‐held TETRA transmitters' affects human cognitive function or subjective symptoms.

AB - Current radio frequency radiation exposure guidelines rest on well‐established thermal effects. However, recent research into analogue and digital transmission fields at levels covered by the exposure guidelines has indicated possible detrimental effects on human cognitive performance. To investigate this, we conducted a controlled climate chamber study of possible changes in cognitive performance in healthy volunteers exposed to transmission signals from TETRA hand portables (TETRA handsets). The trial deployed a balanced, randomized, double‐blinded cross‐over design. Performance on different paper‐and‐pencil, auditory and computer‐based cognitive tasks was monitored in 53 male volunteers (mean age 36.41 years, SD 8.35) during 45‐min exposure to a TETRA handset and sham control signals remotely controlled from a laboratory more than 100 km away. The main cognitive outcome was the Trail Making B (TMB) test. In addition, the participants completed a computer‐based questionnaire measuring self‐reported psychological and physical symptoms. No statistically significant differences (P < 0.05) between the TETRA and sham conditions were found for either TMB (estimated difference 3.8%, confidence interval (CI) −1.6% to 9.2%) or any of the remaining cognitive tasks or symptoms. In conclusion, we found no evidence that brief exposure to hand‐held TETRA transmitters' affects human cognitive function or subjective symptoms.

KW - cognitive function

KW - exposure study

KW - humans

KW - symptoms

KW - TETRA

U2 - 10.1002/bem.20571

DO - 10.1002/bem.20571

M3 - Journal article

SN - 0197-8462

VL - 31

SP - 380

EP - 390

JO - Bioelectromagnetics

JF - Bioelectromagnetics

IS - 5

ER -

No effect of TETRA hand portable transmission signals on human cognitive function and symptoms

Abstract

Emneord

Dokumenter og links

SDU link

Fingeraftryk

Citationsformater