THE EFFECT OF SIGNALLING UPON CONTROL OF AN AVERSIVE STIMULUS

Abstract
An aversive stimulus with a signal elicits responses different from those for a stimulus without a signal. The characteristics of this phenomenon, called signaling effect, were clarified in this study. In experiment (exp) the eyeblink reflex and 180.degree.-rotation type of aversiveness rating were studies in humans. Conditions (3) which differed from each other in the ISI (inter-stimulus interval) were used in a between-subjects design in exp/2, and in a within-subjects design in exp/3. The facilitatory signaling effects in the 8 s ISI condition and inhibitory ones in the 0.5 s ISI were significant regardless of the index. These effects had no learning factor.

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