In a previous study (Erwin, D.N. and Hurt, W.H. (1993): Biological effects of ultrawide band emissions. Proceedings of Human Health Effects Science Review Panel. Washington DC.: Theater Nuclear Warfare Program. pp 91-95) it was found that rats exposed to ultra wideband after receiving a convulsant drug tended toward longer latency to the onset of convulsion than the no-exposure group. Although the effect was not statistically significant, it stimulated interest in present investigation. Because seizure activity is a depolarizing shift characteristic of a large excitatory postsynaptic potential, one might expect some change in chemically induced seizure activity if ultra wideband exposure indeed alters biological membranes.
To test this hypothesis, an ED99 dose (the dose at which 99% of the animals exhibit the target response) of the convulsant pentylenetetrazol or a saline solution was given just before ultra wideband or sham exposure. Resultant seizure activity was recorded.
|Pulse width||1.92 ns|
|Rise time||176 s|
|Repetition frequency||1,000 Hz|