ZCBB.htm

NR ZCBB

AU Guy,A.W.; Chou,C.-K.

TI Effects of high-intensity microwave pulse exposure of rat brain

QU Radio Science 1982; 17: 169-178

PT journal article

AB When the animal was exposed to various pulse widths, the animal displayed no reaction other than that due to the hearing effect until the peak absorbed energy density in the brain exceeded 28 KJ/Kg, or an absorbed energy in the head of 680 J, regardless of peak power or pulse width. Thermographic and hermocouple measurements indicated a maximum temperature rise of 8 degrees C or final maximum brain temperature of 46-46.5 degrees C at the reaction level. The reaction consisted of petit or grand mal seizures lasting for 1 min after exposure, followed by a 4- to 5-min unconscious state during which normal reflexes were displayed. There was a decrease in heartbeat rate in the exposed unanesthetized animals. After the period of unconsciousness the rats recovered without apparent effect from the exposure. These results would indicate that the thresholds for convulsions induced by short exposures of the brain to high energy pulses are dependent only on the deposited energy and temperature rise.

SP englisch

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