Vol.2, No 4, 2004 pp. 311 - 316
UDC 537.868
EXPOSURE TO ELECTROMAGNETIC FIELD
BY USING MOBILE TELEPHONES
AND ITS INFLUENCE ON THE BRAIN FUNCTIONS
Boris Đinđić1, Stojan Radić1,
Dejan Krstić2, Dušan Sokolović1,
Dejan Petković2, Tomislav
Pavlović3, Jasmina Radosavljević2
1Faculty of Medicine, University of
Niš, 18000 Niš
2University of Niš, Faculty of Occupational
Safety,
Department of Environmental Protection, Čarnojevića 10 A, Niš
3University of Niš, Faculty of Sciences
and Mathematics, Višegradska 33, Niš
Abstract. The widespread use of cellular telephones in recent years
inevitably raises the question of the effects on brain function of the
electromagnetic fields (EMF) emitted by such telephones.
The aim of this work was to investigate the changes in the experimental
behaviour of the animalsr under the conditions of long-term mobile phones
electromagnetic field exposition.
We used 4 weeks old, 20 BALB/c mice, divided into two groups:
experimental -consisting of 4 female and 4 male animals and control consisting
of 8 female and 4 male animals. The experimental group was for two months
continually exposed to 900 MHz EMF to mobile phones. In addition to stand-by
exposure every-day in different time 30 minutes of telephone using was
simulated. The individual, collective behavior and body mass was observed.
The experimental group was exposed to EMF during 2 months and observed
for another month.
The animals in experimental group exposed to EMF showed less
weight gain (p<0.05), after two months, meanwhile the amount of used
food was similar in both groups. The most important observations were changing
of basic behavior models and collective defence reflexes as well as aggressive
behavior. The experimental animals exposed to EMF did not show spatial
organization of their living space onto clutch and feeding places. After
removing the source of EMF, this change in behavior disappears after few
weeks.
The currently available results suggest that some aspects of
cognitive function and some direct measures of brain and body physiology
may be affected by exposure to electromagnetic fields of the type emitted
by mobile telephones.
Key Words: Brain Functions, Behavior, Microwave Radiation, Mobile
Telephones
UTICAJ ELEKTROMAGNETNOG POLJA MOBILNIH
TELEFONA NA MOŽDANE FUNKCIJE
Masovna upotreba mobilnih telefona poslednjih godina nametnula je pitanje
njihovog štetnog delovanja na ljudsko zdravlje sa posebnim osvrtom na njihovo
delovanje na moždane funkcije.
Cilj ovog rada je ispitivanje promena ponašanja eksperimentalnih životinja
u uslovima dugotrajne ekspozicije elektromagnetnom polju karakteristika
kao kod mobilne telefonije.
Za eksperiment su korišćeni BALB/c miševi, stari 4 nedelje. Oni su
podeljeni u dve grupe: eksperimentalnu (4 ženke i 4 mužjaka) i kontrolnu
grupu (8 ženki i 4 mužjaka). Eksperimentalna grupa je dva meseca kontinuirano
bila izložena elektromagnetnom polju (EMP) od 900 MHz poreklom od mobilnog
telefona. Pored bazične ekspozicije svakodnevno je simulirano 30 minuta
upotrebe mobilnog telefona. Posmatrane su promene ponašanja kako individualnog
tako i kolektivnog ponašanja, kao i promene telesne težine. Eksperimentalna
grupa je bila eksponirana EMP tokom 2 meseca, a zatim praćena sledećih
mesec dana.
Životinje iz eksperimentalne grupe izložene dejstvu EMP pokazuju slabiji
prirast u telesnoj masi (p<0.05), iako je količina upotrebljene hrane
bila ista u obe grupe. Najvažnija opservacija je promena osnovnih modela
ponašanja i kolektivnog odbrambenog refleksa uz prisutnu povećanu agresivnost.
Eksperimentalne životinje izložene EMP nisu pokazivale prostornu organizaciju
životnog prostora na leglo i mesto za hranjenje. Sve ove promene su tokom
nekoliko nedelja nestale nakon uklanjanja izvora EMP.
Navedeni rezultati ukazuju da neke kognitivne i moždane funkcije kao
i fiziološki procesi u organizmu mogu biti poremećeni usled ekspozicije
EMP karakteristika sličnih onima koji se koriste u mobilnoj telefoniji.
Ključne reči: funkcije mozga, ponašanje, mikrotalasno elektromagnetno
zračenje, mobilni telefoni
