Results 201 to 210 of about 27,454 (248)

Reliability and Stability of Contingent Negative Variation

Applied Psychophysiology and Biofeedback, 2000
Reliability parameters of a test indicate the stability (and quality) of the test itself. Reliability coefficients greater than 0.70 suggest an attribute as being sufficiently stable over time to be characterized as a trait. Reliability parameters of contingent negative variation (CNV) amplitudes in 27 healthy individuals were determined using a test ...
P, Kropp, A, Kiewitt, H, Göbel, P, Vetter, W D, Gerber   +4 more
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Contingent Negative Variation Amplitudes

Archives of General Psychiatry, 1972
In 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, J R, Tinklenberg, L E, Hollister   +2 more
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Motivational determinants of the “contingent negative variation”

Electroencephalography and Clinical Neurophysiology, 1966
Abstract 1. 1. The motivational correlates of the vertex negative slow potentials shift seen during reaction time foreperiod, called “the contingent negative variation” or “expectancy wave”, have been studied in two experiments with young adult human males. 2. 2.
D A, Irwin, J R, Knott, D W, McAdam, C S, Rebert   +3 more
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Contingent Negative Variation Audiometry in Children

International Journal of Audiology, 1984
The aim of the present work was to establish whether contingent negative variation audiometry (CNV-A) is applicable to children. In a group of 23 children aged 5-7 years, only 10 generated clearly recognizable CNV when tested with the method successfully used in adults. When the procedure was modified by prolonging the S1-S2 interval and by introducing
T S, Prevec, K, Ribaric, D, Butinar
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The contingent negative variation in positive and negative types of schizophrenia

American Journal of Psychiatry, 1994
The authors analyzed the contingent negative variations of 20 medicated patients with schizophrenia diagnosed according to DSM-III-R and 20 age- and sex-matched normal comparison subjects. For the patients with schizophrenia, there were significant correlations between contingent negative variation amplitude and two items on the Scale for the ...
S, Oke, R, Saatchi, E, Allen, N R, Hudson, B W, Jervis   +4 more
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Contingent negative variation in children with anorexia nervosa

Pediatrics International, 1999
Central catecholamines, particularly dopaminergic and noradrenergic systems, have affected the appetitive behavior in patients with anorexia nervosa (AN). The purpose of this study is to distinguish the characteristics of contingent negative variation (CNV) and postimperative negative variation (PINV), which may reflect the level of catecholamine in ...
K, Torigoe, O, Numata, T, Sato, C, Imai, K, Takeuchi, H, Yamazaki, H, Hotta, N, Boku, S, Yazaki, S, Sudo, A, Kuwabara, S, Hasegawa, M, Hiura, H, Ino   +13 more
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The contingent negative variation in an odor labeling paradigm

Psychophysiology, 1995
AbstarctFifteen subjects participated in an experiment designed to assess the contingent negative variation (CNV) during the labeling of odors and shapes. Odors or shapes were presented (SI) and followed 3 s later by a lexical label (A, B, or C) (S2). In 75% of the trials, the S2 was the correct label for the odor or shape. In the remaining trials, the
T S, Lorig, J M, Turner, D C, Matia, S, Warrenburg   +3 more
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Contingent negative variation in obsessional-compulsive patients

Biological Psychology, 1984
Obsessional-compulsive disorder has been conceptualised in terms of overattention to irrelevant details. The aim of the present study was to investigate whether this feature would be reflected in the 'early' CNV component. Sixteen obsessional patients and matched controls were tested in a motor-set CNV paradigm with a 5 sec interval between S1 and S2 ...
G, Sartory, D, Master
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The Contingent Negative Variation, Personality and Antisocial Behaviour

British Journal of Psychiatry, 1984
SummaryUsing a classical click/flash paradigm the contingent negative variation (CNV) was recorded from 60 consecutive male admissions to Broadmoor Hospital. Clinical and psychometric Minnesota Multiphasic Personality Inventory (MMPI) assessments were made independently of the electroencephalography (EEG) data.
R C, Howard, G W, Fenton, P B, Fenwick
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The influence of discriminations on the form of the contingent negative variation

Neuropsychologia, 1976
Abstract A CNV paradigm was utilized in which a discriminative response occurred after the imperative stimuli (S2). The response was contingent on information presented in either the ready stimulus (S1) or in S2. The form of the CNV in these situations was analysed and compared with the form of the CNV when no discriminations occurred, other than ...
H, Weinberg, H, Michalewski, R, Koopman
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