Papers by Vilfredo De Pascalis
International Journal of Psychophysiology, Sep 1, 1993
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Brain sciences, Jan 24, 2024
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International Journal of Psychophysiology, Oct 1, 2021
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International Journal of Psychophysiology, Sep 1, 2010
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Personality and Individual Differences, Oct 1, 2022
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International Journal of Psychophysiology, 2004
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International Journal of Psychophysiology, Jul 1, 1991
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International Journal of Psychophysiology, Sep 1, 2008
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Symmetry, Aug 4, 2021
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Perceptual and Motor Skills, Oct 1, 1984
22 men and women, students in psychology, were given the Eysenck Personality Questionnaire, also ... more 22 men and women, students in psychology, were given the Eysenck Personality Questionnaire, also percent theta, alpha and beta EEG spectral powers were evaluated during an hypnotic induction induced according to Barber's method. The EEG performance was compared with two baseline eyes-open, eyes-closed conditions and with a neutral control situation of listening to a weather report. No relation was found between Extraversion-Introversion scores and scores on the Barber Suggestibility Scale. The difference in EEG powers was nonsignificant for groups high and low in suggestibility, while a significant interaction was found for eyes open or closed × suggestibility groups when extreme scores of Extraversion-Introversion and Neuroticism were considered according to Eysenck's (1966) method. The right theta power of the stable extraverts and neurotic introverts, high in susceptibility in eyes-open condition was higher than the neurotic extraverts, and stable introverts who were low in susceptibility to hypnosis. The right theta power of the neurotic extraverts and stable introverts who were low in susceptibility to hypnosis showed a tendency to increase in eyes-closed conditions, while an opposite observation was made for the stable extraverts and neurotic introverts, subjects who were high in susceptibility. It is interesting to notice, according to Galbraith, et al. (1970) that it was the eyes-open condition which yielded the best EEG predictor of hypnotic susceptibility.
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Comprehensive Psychiatry, Jul 1, 2011
The cross-cultural generalizability of Impulsiveness-Venturesomeness-Empathy questionnaire (I(7))... more The cross-cultural generalizability of Impulsiveness-Venturesomeness-Empathy questionnaire (I(7)) is investigated with a sample of 578 Italian adults, mostly nonstudents. Results indicate that Italian I(7) scale intercorrelations and reliabilities were similar to those obtained in other cultural contexts; furthermore, the 3-factor structure is generalizable across sexes and invariant compared with the English normative structure, as well as with those found in the French, Dutch, and Spanish versions. Impulsiveness was positively correlated with Barratt Impulsiveness Scale and with Dickman's dysfunctional impulsivity scale but independent of the functional impulsivity scale. Plotting the scale onto the Eysenck's psychoticism-extraversion-neuroticism factor space, impulsiveness was more strongly related to psychoticism and neuroticism than to extraversion. We remark that the impulsiveness measure of I(7) is fairly stable across languages and cultures and can be used reliably in Italian speaking samples.
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International Journal of Psychophysiology, Aug 1, 1991
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Perceptual and Motor Skills, Aug 1, 1984
8 women and 8 men took Cattell's IPAT-anxiety questionnaire and later McFarland's test of... more 8 women and 8 men took Cattell's IPAT-anxiety questionnaire and later McFarland's test of ability to perceive heart activity. The second test involved subjects' tracking their own heart rates, then they enrolled in an EKG biofeedback session to evaluate ability to increase and decrease heart rate from subjects' resting baselines. At the end of the session each subject completed Blanchard, et al.'s questionnaire to specify the cognitive strategies used for heart-rate control. Heart rate, abdominal respiration rate, respiration amplitude, EEG percent power in theta, alpha, and beta bands were evaluated. Success of heart-rate decrease seemed to depend mainly on activity levels: the subjects who achieved high scores on the activity test decreased heart rate significantly better than did low scorers. The relationship between scores for perception of heart and increases in heart rate was nonsignificant: increased heart-rate seemed to depend on differences in respiration between the rest and periods of increase. The significant, negative correlation between trait anxiety and perceptions of heart activity suggested that anxiety affected subjects' ability to perceive heart rate. The theta EEG power of the right hemisphere was significantly higher in subjects scoring high than for those low in perception of heart activity. During heart-rate increase tasks subjects mainly reported use of ‘arousal responses,’ similarly during heart-rate decrease tasks they reported use of relaxation responses.
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Personality and Individual Differences, Mar 1, 1999
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International Journal of Psychophysiology, May 1, 2005
The neural mechanisms underlying pain perception and anti-nociceptive effects of mental imagery a... more The neural mechanisms underlying pain perception and anti-nociceptive effects of mental imagery are not well understood. Using a measure of phase-ordered beta and gamma EEG oscillations in response to painful electric stimulation, we recently found that somatosensory event-related phase-ordered gamma oscillations (38-42 Hz), elicited by the onset of painful stimuli over Cz scalp site, were linearly related to pain perception. In the present study, 38 subjects were engaged in a painful stimulus detection task using an oddball paradigm. This task was performed under a condition in which subjects were required simply to count the number of target stimuli (pain condition) and under another condition in which subjects were required to produce an obstructive mental imagery of painful stimulus perception (obstructive imagery). Only EEG responses to standard stimuli were analyzed in this study. Correlation analysis of sweeps for each individual revealed brief intervals of phase ordering of EEG patterns in the beta and gamma bands. The frequencies of interest were the beta1 (26-30 Hz), beta2 (30-34 Hz), gamma1 (34-38 Hz), gamma2 (38-42 Hz) and gamma3 (42-46 Hz) bands. Obstructive imagery treatment, compared to pain condition, significantly reduced pain perception. This reduction was paralleled by significant decreases of evoked phase-ordered gamma2 and gamma3 patterns over Cz scalp site. Phase-ordered oscillations at Cz scalp site, for both gamma2 and gamma3 bands, significantly predicted pain ratings during pain condition. Phase-ordered oscillation scores, obtained for these gamma bands over parietal and frontal scalp sites, resulted the best predictor of pain ratings during obstructive imagery. This study provides evidence for the role of gamma oscillations in the subjective experience of pain. Further, it has provided support for the view that pain reduction during obstructive mental imagery is the product of an inhibitory process involving frontal and parietal cortical regions.
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Clinical Neurophysiology, Feb 1, 2013
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Pain, Nov 1, 2004
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Personality and Individual Differences, Aug 1, 2000
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International Journal of Psychophysiology, Jun 1, 2023
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International Journal of Psychophysiology, Nov 1, 2014
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Papers by Vilfredo De Pascalis