The contingent negative variation (CNV) was one of the first event-related potential (ERP) components to be described. The CNV component was first described by Dr. W. Grey Walter and colleagues in an article published in Nature in 1964. The importance of this finding was that it was one of the first studies which showed that consistent patterns of the amplitude of electric responses could be obtained from the large background noise which occurs in electroencephalography (EEG) recordings and that this activity could be related to a cognitive process such as expectancy.
Read more about Contingent Negative Variation: Main Paradigms, Component Characteristics, Functional Sensitivity, O-wave and E-wave, Localization, Theory
Famous quotes containing the words contingent and/or negative:
“I can see ... only one safe rule for the historian: that he should recognize in the development of human destinies the play of the contingent and the unforeseen.”
—H.A.L. (Herbert Albert Laurens)
“Mothers often are too easily intimidated by their children’s negative reactions...When the child cries or is unhappy, the mother reads this as meaning that she is a failure. This is why it is so important for a mother to know...that the process of growing up involves by definition things that her child is not going to like. Her job is not to create a bed of roses, but to help him learn how to pick his way through the thorns.”
—Elaine Heffner (20th century)