Abstract
The contingent negative variation (CNV), a cerebral DC shift in man, has been linked in the literature to the psychological concept “expectancy.” In a study of the relationship between developing accuracy of interval estimation and CNV amplitude, absolute error of interval estimation was found to decrease exponentially while CNV amplitude could best be described by a quadratic (inverted-U) function. It was concluded that the relationship between CNV amplitude and “expectancy” is not one-to-one, and that these data, with those from a number of other investigations, support the hypothesis that the various portions of the brain act differentially and at various times during learning.
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McAdam, D.W. Slow potential changes recorded from human brain during learning of a temporal interval. Psychon Sci 6, 435–436 (1966). https://doi.org/10.3758/BF03330974
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DOI: https://doi.org/10.3758/BF03330974