1,720,999 research outputs found
HYPNOTIZABILITY AND PAIN MODULATION: A Body-Mind Perspective.
Full text linkThe study investigated whether the cardiac activity and cognitive-emotional traits sustained by the behavioral inhibition/activation system (BIS/BAS) may contribute to hypnotizability-related pain modulation. Nociceptive stimulation (cold-pressor test) was administered to healthy participants with high (highs) and low (lows) hypnotizability in the presence and absence of suggestions for analgesia. Results showed that heart rate increased abruptly at the beginning of nociceptive stimulation in all participants. Then, only in highs heart rate decreased for the entire duration of hand immersion. During stimulation with suggestions of analgesia, pain threshold negatively correlated with heart rate. BIS/BAS activity partially accounted for the observed hypnotizability-related differences in the relation between cardiac interoception and pain experience
Chiesa e società: il caso veneto
Full text linkIl contributo offre alcune considerazioni sugli orientamenti della Chiesa cattolica nel Veneto - con particolare attenzione all'episcopato - in riferimento alle problematiche socioculturali, economiche e politiche tra il secondo Novecento e l’inizio del nuovo millennio
Blink reflex in subjects with different hypnotizability: New findings for an old debate
No full textHypnotizability is associated with attentional characteristics whose neurophysiological bases are still under debate. Aim of the study was the assessment of possible hypnotizability-related differences in blink reflex (BR) which has a nociceptive component, is sensitive to attentional-emotional traits and states and is modulated by the brain dopamine content. In 10 high (highs) and 10 low hypnotizable participants (lows) BR was induced by electrical nociceptive stimulation of the right supraorbital nerve in the absence (noW) and in the presence of a visual cue preceding the electrical stimulation by 0.1 ms (W01) and by 1 ms (W1). The studied variables were: the amplitude of BR components (R1, R2, R3), the amplitude of the quick change (TO) of heart rate ("turbulence") induced by stimulation and its recovery slope (TS), the role of the Behavioral Inhibition/Activation System (BIS/BAS) in the variability BR and cardiac turbulence. Repeated measures ANOVA did not show any significant difference between highs and lows in blink reflex. TO indicated stimulation related HR increase in highs and decrease in lows, TS was larger in highs. BIS and BAS accounted for the warning effects on the BR amplitude and modulated the hypnotizability and warning effects on TO and TS. Findings do not support dopamine based hypnotizability-related attentional abilities. In contrast, they indicate that hypnotizability modulates the short-lasting cardiac response to electrical nociceptive stimulation
A simple method for measuring baroreflex sensitivity holds prognostic value in heart failure
No full textBivariate spectral analysis of nonstationary cardiovascular variability series through cross Wigner distribution
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The effects of restriction of movement on the reliability of heart rate variability measurements in the horse (Equus caballus)
No full textAnalysis of heart rate variability (HRV) is a noninvasive approach for investigating the sympathovagal balance of the autonomic nervous system. In recent years, HRV has been increasingly evaluated in animal research. In horses, it has been suggested that basal resting conditions can be achieved by restraining them. The aim of this study was to verify how restriction of movement influences HRV in horses. Ten healthy standardbred mares were used to measure the electrocardiographic signal under 2 conditions: free to move in the stall and restrained in the stock. Results indicate that the restriction of movement is associated with increased nervous system sympathetic activity not consistent with resting condition
Watching neutral and threatening movies: subjective experience and autonomic responses in subjects with different hypnotizability levels
No full textSubjects with high hypnotizability scores (Highs) have been considered more prone to experience negative
affect and more vulnerable to its autonomic effects with respect to low hypnotizable individuals (Lows).
The aim of the study was to analyze the subjective experience, tonic skin conductance (SC), respiratory fre-
quency (RF), heart rate (HR) and heart rate variability (HRV) of healthy Highs and Lows during a long-lasting,
emotionally neutral task (Session R, 46 subjects) and a moderately threatening one (Session T, 35 subjects).
At the end of the relaxing Session R, all participants reported an increased relaxation. At the end of the threat-
ening Session T, only 20 subjects reported a decreased relaxation (effective T: eT subsample). Highs and Lows
of this subsample reported a similarly reduced relaxation and showed a similarly increased skin conductance.
HR and HRV did not differ between the two sessions and between Highs and Lows. Among the subjects not
reporting decreased relaxation at the end of Session T (ineffective T: iT subsample, n=15), relaxation was
deeper and associated with lower skin conductance in Highs, although HR and HRV did not differ between
Highs and Lows. All together, the results do not support the hypothesis of higher proneness of Highs to ex-
perience negative affect and to exhibit the autonomic correlates of negative emotion
Effectiveness of adaptive filtering in cancelling the respiratory component from cardiovascular series
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