Cardiac Deceleration as an Indicator of Correct Performance

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Abstract
A within-subjects experiment involving 10 subjects was performed to examine the relationship between the accuracy of judgment of position and cardiac deceleration. The results supported the hypothesis that accurate (correct) performance is accompanied by greater cardiac deceleration than inaccurate performance for those subjects (9 out of 10) who exhibited cardiac deceleration to stimulus onset. The data indicated, however, that the relationship varied with time. Part of this variability appears related to the initial exploratory behavior in which subjects engaged and later reported during the post-experiment interview.