Results 191 to 200 of about 27,454 (248)

Contingent negative variation in headache

Annals of Neurology, 1986
AbstractContingent negative variation (CNV), an event‐related slow cerebral potential, was analyzed in 79 consecutive headache patients. Compared to normal controls (n = 33), CNV did not differ in tension headache (n = 21) or in combined headaches with a predominant tension component (n = 13).
MAERTENS DE NOORDHOUT, Alain, Timsit-Berthier, Martine, Timsit, Meyer, SCHOENEN, Jean   +3 more
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The Contingent Negative Variation in Psychopaths

Psychophysiology, 1989
ABSTRACTThere have been persistent claims that the contingent negative variation (CNV) is absent or greatly attenuated in psychopaths. However, these claims are based on a few studies with serious methodological and diagnostic problems. The present study attempted to avoid these problems.
A E, Forth, R D, Hare
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Is the Contingent Negative Variation Contingent on a Motor Response?

Psychophysiology, 1972
ABSTRACTTen subjects participated in an experiment in which each was presented with series of paired stimuli separated by 1000 msec. The first stimulus was a click. The second stimulus was either of two visual patterns, concentric circles or a star figure.
Donchin, Emanuel, Gerbrandt, Lauren K., Leifer, Larry John, Tucker, Ledyard   +3 more
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Anxiety, Stress, and the Contingent Negative Variation

Archives of General Psychiatry, 1973
Two groups of 26 male college students, one scoring in the upper 10% and one scoring in the lower 10% of the Bendig test of emotionality (original sample, N = 200), were studied under a "low-stress" and a "high-stress" condition. Contingent negative variations (CNV) and galvanic skin responses (GSR) were recorded in a differential reaction time ...
J R, Knott, D A, Irwin
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Contingent Negative Variation and Phobic Disorders

Neuropsychobiology, 2008
The authors studied the modifications in contingent negative variation (CNV) in a group of rupophobic subjects. A slide-projected phobogenic or a neutral stimulus was administered 5 s prior to the warning stimulus (S₁). A marked reduction in CNV amplitude and the appearance of post-imperative negative variation were observed when
P A, Rizzo, M, Spadaro, G, Albani, C, Morocutti   +3 more
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Conative control of the contingent negative variation

Electroencephalography and Clinical Neurophysiology, 1966
Abstract Experiments are described in which experimenter-subjects were able to control the amplitude of the contingent negative variation “at will”. It is urged that any investigations of the psychological correlates of the CNV which make use of “trained observers” should be interpreted with this possible source of bias in mind, and replicated, where
D W, McAdam, D A, Irwin, C S, Rebert, J R, Knott   +3 more
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Lie detection with contingent negative variation

International Journal of Psychophysiology, 2003
topographies of contingent negative variation (CNV) were recorded in a paradigm of delayed response with feedback for three kinds of faces: familiar, strange and target. Subjects made responses to the faces according to whether the faces were familiar or not, but also, gave deliberately deceptive responses to target faces to 'cheat the computer ...
Fang, Fang, Yitao, Liu, Zheng, Shen
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Contingent Negative Variation in Childhood Migraine

Cephalalgia, 1993
Adult migraineurs without aura have an increased amplitude of the Contingent Negative Variation (CNV) between attacks. Given the potential diagnostic importance of this finding and the difficulties associated with diagnosing migraine in childhood it seemed important to assess CNV in children suffering from this disorder.
E, Besken, R, Pothmann, G, Sartory
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Contingent Negative Variation (CNV)

2023
The contingent negative variation (CNV), first described by Gray Walter in 1964 as “expectancy wave,” is a slow cortical endogenous potential widely recognized as the electrophysiological signature of a task-specific preparatory state that facilitates the stimulus perception and the required response.
Fattapposta, Francesco, Pauletti, Caterina, Mannarelli, Daniela, De Pascalis, Vilfredo, Ciorciari, Joseph, Crewther, David, White, David, Knyazev, Gennady   +7 more
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Improved Contingent Negative Variation Audiometry

International Journal of Audiology, 1980
In earlier reports we described contingent negative variation audiometry (CNV-A) and explored the accuracy of the method used in clinical conditions. Amplitude was found to be the factor which determines the accuracy of CNV-A. With this study we aimed to increase the amplitude of the CNV so as to improve the accuracy of CNV-A.
T S, Prevec, K, Ribarić
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