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Paavo Huttunen, Osmo Hänninen, Risto Myllylä  Pathophysiology 

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Presentation on theme: "Paavo Huttunen, Osmo Hänninen, Risto Myllylä  Pathophysiology "— Presentation transcript:

1 FM-radio and TV tower signals can cause spontaneous hand movements near moving RF reflector 
Paavo Huttunen, Osmo Hänninen, Risto Myllylä  Pathophysiology  Volume 16, Issue 2, Pages (August 2009) DOI: /j.pathophys Copyright © 2009 Elsevier Ireland Ltd Terms and Conditions

2 Fig. 1 Testing human radio wave sensitivity. Radio waves from the TV tower reflect back from the reflector and form a standing wave. When the reflector moves, the position of the maximums of the standing wave change, and the electromagnetic intensity changes in the body of the test subject. The computer with an AD-converter registers the signals of hand movement transducer and the RF-meter with the dipole antennas. Pathophysiology  , DOI: ( /j.pathophys ) Copyright © 2009 Elsevier Ireland Ltd Terms and Conditions

3 Fig. 2 Hand movements near the moving RF reflector. The standing waves moved slowly with the reflector. Intensity of the electric field was measured with the broadband RF-meter with horizontal dipole antennas. Variation of the field intensity is presented in the upper curve and the hand movements of the standing test person are in the lower curve. Pathophysiology  , DOI: ( /j.pathophys ) Copyright © 2009 Elsevier Ireland Ltd Terms and Conditions

4 Fig. 3 Spectrum 1–1000MHz at the test place. The highest peaks at the left are FM-radio broadcasting signals and the four lower peaks in the middle are the digital TV signals. Because the measurement was made with 1.5m dipoles, signals near 100MHz are more prominent because of antenna resonance. Pathophysiology  , DOI: ( /j.pathophys ) Copyright © 2009 Elsevier Ireland Ltd Terms and Conditions

5 Fig. 4 Spectrum of the FM-radio broadcasting at the test place. Six channels were sending and the maximum electric field intensity was 85dBμV. Pathophysiology  , DOI: ( /j.pathophys ) Copyright © 2009 Elsevier Ireland Ltd Terms and Conditions


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