ID Number		847
Study Type		In Vivo
Model		1.25 GHz (PW) exposure to frogs and analysis of cardiovascular function
Details		Leopard frogs (n=24) were exposed to 1.25 MHz RF (PW- 5-usec pulses synchronized with the QRS wave of the heart beat) for multiple 10 minute periods at a power density of 3 uW/cm2. Exposure synchronized with the R wave resulted in a very slight but statistically significant increase in heart rate when compared to controls. No arrhythmias were observed during the in vivo study. In an earlier study (Frey 1968), frog hearts were isolated and exposed in vitro under conditions similar to those described above with RF pulsed to synchronize with the QRS complex of the heart beat. Exposure resulted in an increased heart rate with arrhythmias. The authors suggested a possible neuro-humoral mechanism.
Findings		Effects
Status		Completed With Publication
Principal Investigator		Randomline, Inc., PA, USA
Funding Agency		Private/Instit.
Country		UNITED STATES
References		Frey, AH et al. J. Bioelectricity, (1986) 5:201-210 Jauchem, JR et al. J. Bioelectricity, (1987) 6:219-220 Frey, AH et al. J. Bioelectricity, (1987) 6:221- Frey, AH et al. Life Sci., (1968) 7:505-512
Comments		Critical comments by Jauchem et al (J. Bioelectricity (1987) 6:219-220 [IEEE # 100]) to the authors conclusions on heart rate changes and response by Frey & Eichert (J. Bioelectricity (1987) 6:221 [IEEE # 67])