Abstract
WE ARE gratified at the interest Weiss 1 has shown in this work and grateful for the opportunity to discuss his criticisms. The interpretation of our data is of more than theoretical interest because, since the initial studies reported by Ross and myself, we have continued to expand and develop this technique, and especially to apply it to the study of focal epilepsy, with some interesting results. To clarify our present opinion, I should like to comment briefly on the specific criticisms and then outline our own concept and use of the term "inhibition." Weiss offers an alternative explanation for the experimental finding of an increased visuomotor reaction time following extinction of a conditioned alpha blocking to a sound stimulus. The explanation applies also to the equally increased reaction time recorded during the delay interval in a delayed conditioned reflex. Weiss feels that the prolongation of reaction time is better