Results 191 to 200 of about 29,201 (244)
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Contingent negative variation and attentional performance in humans
Neurological Research, 2001The relation between a paper-pencil test of sustained attention (d2-letter cancellation test, d2-LCT) and the contingent negative variation (CNV) as a cortical slow potential was calculated in 23 healthy undergraduate students. Both d2-LCT and CNV reflect selective, focussed attention.
Peter Kropp, Wolf-Dieter Gerber
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Contingent Negative Variation in Migraine
Headache: The Journal of Head and Face Pain, 1990SYNOPSIS The Contingent Negative Variation (CNV) is an event‐related slow potential. It was recorded in healthy volunteers (n = 8) and in patients suffering from migraine without (n = 12) or with (n = 5) aura, during one (CNV1) and three second (CNV3) foreperiods in a ...
Bocker, K.B.E. +3 more
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Contingent negative variation in headache
Annals of Neurology, 1986AbstractContingent 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 +3 more
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The Contingent Negative Variation in Psychopaths
Psychophysiology, 1989ABSTRACTThere 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, 1972ABSTRACTTen 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 +3 more
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Contingent Negative Variation and Phobic Disorders
Neuropsychobiology, 2008The 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 (S<sub>1</sub>). A marked reduction in CNV amplitude and the appearance of post-imperative negative variation were observed when
P A, Rizzo +3 more
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Contingent Negative Variation Amplitudes
Archives of General Psychiatry, 1972In a double-blind study, the amplitude of the contingent negative variation (CNV) was assessed in 12 normal men given placebo and quantified "social" doses of 1-δ 9 -transtetrahydrocannabinol (THC) and alcohol (ethyl alcohol). Using subjects as their own controls, it was found that THC selectively enhanced the amplitude as compared to placebo while ...
B S, Kopell +2 more
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Lie detection with contingent negative variation
International Journal of Psychophysiology, 2003topographies 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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Anxiety, Stress, and the Contingent Negative Variation
Archives of General Psychiatry, 1973Two 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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Conative control of the contingent negative variation
Electroencephalography and Clinical Neurophysiology, 1966Abstract 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 +3 more
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