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- W1993674916 abstract "1. The motivational correlates of the vertex negative slow potentials shift seen during reaction time foreperiod, called “the contingent negative variation” or “expectancy wave”, have been studied in two experiments with young adult human males. 2. In the first experiments, a manual response to a visual stimulus was determined by the position of the preceding auditory signal. Measurable CNVs following the auditory signal were seen in all conditions, but they were significantly larger when a manual response was made to the second, visual, stimulus. No significant relationships were seen between CNV magnitude and either reaction time or anticipatory EMG activity. 3. In the second experiment, left and right tones wre followed by weak and by painful finger shock, respectively. Key-press to both shocks was instructed on one half of the trials with order counterbalanced. CNVs were larger when the warning signal indicated painful rather than weak shock would occur, and VNVs were alos larger during response than non-response conditions. No interaction was seen. Although reaction times were signficantly shorter to the strong shock, a significant correlation between CNV magnitude and reaction tiem could be demonstrated only within the weak shock condition. 4. These results were interpreted as indicating that if the contingent negative variation is a measure of “expectancy’ then the definition of such a term must explicity include motivational factors." @default.
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- W1993674916 date "1966-12-01" @default.
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- W1993674916 title "Motivational determinants of the “contingent negative variation”" @default.
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- W1993674916 doi "https://doi.org/10.1016/0013-4694(66)90172-6" @default.
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