作者: J. Perdok , A.W.K. Gaillard
DOI: 10.1016/0301-0511(79)90049-8
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摘要: Slow EEG potentials were recorded during the foreperiod of a signal detection task which involved different levels discrimination difficulty. The subject was requried to react S2 as quickly possible or delay his responses by 1 s. It found that contingent negative variation (CNV) attenuated when no speeded response required and larger amplitudes preceded easy rather than difficult discrimination. In addition, differences between correct incorrect detections. On these grounds it is concluded CNV not positively correlated with perceptual sensitivity.