Abstract
Summary
We have made some physiological investigations of the response of a single nerve fiber to beta rays. Small exposures, up to 20 millicurie-hours at a distance of 1 mm in air with the filter shown, showed no effect. Moderate exposures (20-30 mc h.) evoked an injury current from the irradiated region. At higher exposures, the threshold value of stimulus increased and the action current decreased in strength and duration, and ultimately disappeared at 70 millieurie-hours. Complete breakdown occurred at the highest doses.
Get full access to this article
View all access options for this article.