Vincenzo Varriale

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OBJECTIVE The present study investigated the properties of feedback-related negativity (FRN) and P3 component of the event-related potentials (ERPs) and their neural sources localization as neurocognitive correlates of the behavioural inhibition and behavioural activation systems (BIS/BAS). The association between BIS/BAS function and anterior cortical(More)
The aim of this study was to analyze the relationships among impulsivity, intelligence and P300, a well-known component of the event-related potential widely studied in personality and intelligence research. Eighty-two males completed the Barratt Impulsiveness Scale and the two-subtest form of the Wechsler Abbreviated Scale of Intelligence. A subsample of(More)
This study investigated the influence of individual differences in attentional impulsivity (Att-Imp), learning ability, and learning practice on oscillatory activity and phase synchrony responses to monetary gain and loss signals during an instrumental-learning task in healthy women. We used a trial-by-trial wavelet-based time-frequency analysis of the(More)
BACKGROUND AND AIM As leptin is the object of intensive clinical research, we compared the radio-immunological assay (RIA) and enzyme-linked immunosorbent assay (ELISA) commercially available for measuring its plasma concentration in humans (Study 1), and sought to determine the power of a single plasma leptin measurement to characterise adequately a(More)
A reduction in mean erythrocyte volume has been reported in some strains of genetically hypertensive rat, and more recently it has been suggested that a similar alteration might be found in human essential hypertension. The relationship between erythrocyte volume and blood pressure was therefore studied in a random sample of an untreated male working(More)
Using a strict subject selection procedure, we tested in High and Low Hypnotizable subjects (HHs and LHs) whether treatments of hypoalgesia and hyperalgesia, as compared to a relaxation-control, differentially affected subjective pain ratings and somatosensory event-related potentials (SERPs) during painful electric stimulation. Treatments were administered(More)
Pseudothrombocytopenia is a phenomenon in which the electronic count shows spuriously low platelet counts in subjects with normal platelet levels. The mechanism of anticoagulant-dependent pseudothrombocytopenia appears to involve cold reactive agglutinins against platelet antigens. The authors report a case of EDTA-dependent pseudothrombocytopenia with(More)
The authors evaluated technical performance of two automated haematological counters, the Coulter T-660 in comparison to Hemalog 8/90. Both systems showed a good correlation and a good precision. The Coulter T-660 revealed to be a high standard analyzer, that can adequately support more complex haematological analyzers in laboratory routine.
Cell swelling, as measured by electronic cell sizing, is a good indicator of the Na+/H+ exchange activation. In this study the kinetic properties of the Na+/H+ exchanger were determined with the aid of the Coulter S-Plus VI D haematological cell counter. Cell swelling was measured in platelets suspended in Na-propionate medium. The rapid entry and(More)