377 research outputs found

    Asexuality: Classification and characterization

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    This is a post-print version of the article. The official published version can be obtaineed at the link below.The term “asexual” has been defined in many different ways and asexuality has received very little research attention. In a small qualitative study (N = 4), individuals who self-identified as asexual were interviewed to help formulate hypotheses for a larger study. The second larger study was an online survey drawn from a convenience sample designed to better characterize asexuality and to test predictors of asexual identity. A convenience sample of 1,146 individuals (N = 41 self-identified asexual) completed online questionnaires assessing sexual history, sexual inhibition and excitation, sexual desire, and an open-response questionnaire concerning asexual identity. Asexuals reported significantly less desire for sex with a partner, lower sexual arousability, and lower sexual excitation but did not differ consistently from non-asexuals in their sexual inhibition scores or their desire to masturbate. Content analyses supported the idea that low sexual desire is the primary feature predicting asexual identity

    Instructions to rate genital vasocongestion increases genital and self-reported sexual arousal but not coherence between genital and self-reported sexual arousal

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    Introduction: Women are often reported to have a low coherence (often referred to as “discordance” in sexuality literature) between their genital response and self-reported sexual arousal.Aim: The purpose of this study was to determine whether differing instructions for rating sexual arousal would increase the coherence between genital response and self-reported arousal in women.Methods: Genital responses were recorded, using vaginal photoplethysmography, from 32 young women while they fantasized in three different conditions. Conditions instructed women to rate their overall sexual arousal, any physical cues, and genital blood flow.Main Outcome Measures: The primary outcome measure was the coherence of vaginal pulse amplitude (VPA) and reported sexual response in the three conditions.Results: Unexpectedly, both VPA response and self-reported sexual arousal were higher when women were asked to rate their genital blood flow. Examining only participants who reported at least some sexual arousal in all conditions (n?=?17), coherence was highest when women were instructed to rate overall sexual arousal.Conclusion: Results suggest that focusing on genital blood flow during sexual fantasy may increase women's (self-reported and genital) sexual response. Focusing on any physical arousal cues during sexual fantasy was associated with lower coherence of women's genital response and self-reported arousal compared with when they were instructed to rate their overall sexual arousal. Prause N, Barela J, Roberts V, and Graham C. Instructions to rate genital vasocongestion increases genital and self-reported sexual arousal but not coherence between genital and self-reported sexual arousal

    AMČR - archeologický záznam C-201802833A

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    Stav: 3Označení: UAPPSC 433/2018Lokalizace/okolnosti: Obec. Parc. č. 555/7,31. Podnět: rekonstrukce ul. Čeňka Prause

    Absolute Moments of Generalized Hyperbolic Distributions and Approximate Scaling of Normal Inverse Gaussian Lévy-Processes

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    Expressions for (absolute) moments of generalized hyperbolic (GH) and normal inverse Gaussian (NIG) laws are given in terms of moments of the corresponding symmetric laws. For the (absolute) moments centered at the location parameter mu explicit expressions as series containing Bessel functions are provided. Furthermore the derivatives of the logarithms of (absolute) mu-centered moments with respect to the logarithm of time are calculated explicitly for NIG Levy processes. Computer implementation of the formulae obtained is briefly discussed. Finally some further insight into the apparent scaling behaviour of NIG Levy processes (previously discussed in Barndorff-Nielsen and Prause (2001)) is gained
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