Abstract
Responses of the olfactory system to strong odor stimulation were studied in anesthetized rabbits immediately after x-irradiation (250 kVp) of the head. The sinusoidal potentials (induced waves) recorded from the surface of the olfactory bulb during odor stimulation were abolished by surface doses of 50 to 70 kR during periods of irradiation of 2 to 4 hours. Slightly higher doses were required to abolish immediately all neuronal response to odor, as determined by microelectrode recordings of single olfactory bulb neurons. Response failure was due primarily, if not entirely, to effects of radiation on the olfactory bulb, since olfactory receptor responses to odor were readily obtained after abolition of all responses in the olfactory bulb.
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