Introduction: Placebo and nocebo effects are positive and negative health outcomes that can be elicited by the psychosocial context. They can be mediated by expectations, and may emerge in somatic symptoms even when people are aware of these effects. Interindividual differences could impact placebo and nocebo responding, but findings are inconsistent.Methods: The current work examined expectation as a mediator of the association between verbal placebo and nocebo suggestions and histamine-induced itch across three experimental studies. Moreover, we examined whether interindividual differences, (...) body ignorance) modulated: the direct association between VSs and itch, and the indirect, expectation-mediated association between VSs and itch. Positive VSs were compared to neutral instructions or negative VSs in an open-label or closed-label context using PROCESS. First, mediation of VSs effects on itch by expectations was tested. Next, moderation by individual traits was explored using conditional process analyses.Results: The effects of VSs on itch were significantly mediated by expectation in Study 1 and in the open-label contexts of Studies 2 and 3. Ignorance of bodily signals marginally moderated the direct effects of VSs on itch when closed-label suggestions were given: at low levels of body ignorance, effects of positive and negative VSs were stronger. Moreover, moderated mediation was observed in the open-label groups of Studies 2 and 3: The expectation-mediated effects of VSs on itch were stronger when BAS drive was lower.Conclusion: Overall, the effects of VSs on itch were mediated by expectations in the open-label, but not the closed-label context. Moreover, the current work suggests that placebo and nocebo effects may be moderated by ignorance of bodily signals and the BAS. There was limited evidence that other interindividual differences modulated placebo and nocebo responding in itch. (shrink)

Scientists, engineers, and healthcare professionals are currently developing a variety of new devices under the category of brain-computer interfaces (BCIs). Current and future applications are both medical/assistive (e.g., for communication) and non-medical (e.g., for gaming). This array of possibilities comes with ethical challenges for all stakeholders. As a result, BCIs have been an object of both hope and concern in various media. We argue that these conflicting sentiments can be productively understood in terms of personhood, specifically the impact of BCIs (...) on what it means to be a person and to be recognized as such by others. To understand the dynamics of personhood in the context of BCI use and investigate whether ethical guidance is required, a meeting entitled "BCIs and Personhood: A Deliberative Workshop" was held in May 2018. In this article, we describe how BCIs raise important questions about personhood and propose recommendations for BCI development and governance. (shrink)

The explanatory gap refers to the lack of concepts for understanding “how it is that . . . a state of consciousness comes about as a result of irritating nervous tissue.” By assuming that there are colours in the outside world, Block needlessly widens this gap and Lycan and Kitcher simply fail to see the gap. When such assumptions are abandoned, an unnecessary and incomprehensible constraint disappears. It then becomes clear that the brain can use its own neural language for (...) representing aspects of the outside world. While this may not close the gap, it becomes clearer where we need new concepts. (shrink)

Everybody knows the phenomena summarized with the term attention: concentration, focalization, limitation, selection, and intensification . The explanation of these phenomena is, however, a different matter. Problems easily arise with regard towhathas to be explained and with regard to thestyleof explanation. A problem of the first kind is the “methodology of ‘bad focus’”: the explanation starts with and is fixated on an intuitively striking but nonessential behavioral feature or cognitive achievement. A problem of the second kind is a “virtus dormitiva” (...) explanation: the explanation starts with emphasizing one aspect of the observed phenomena, the emphasized aspect receives an interesting and suggestive name, and that name with its connotations is used as a concept in the explanation. At the start of contemporary, behavior-based, information processing psychology, avirtus dormitivaexplanation infiltrated the functional accounts of the phenomena of attention; the empirical observation that people show performance limitations was translated into the theoretical concept of a communication channel with a limited capacity. That limited capacity notion became the core concept in what can be called the standard theory of attention. This standard theory of attention faced severe difficulties in explaining the guidance of attention by the information processor's goals and intentions. Subsequent modifications, concerned with removing these difficulties, revealed that selection, guided by goals and intentions, is the essential behavioral feature and that the observed performance limitations are a result of this selection. So, the limited capacity theorizing was not only plagued by avirtus dormitivaexplanation, it also suffered from the methodology of bad focus. (shrink)

In Menciusiia6 all humans are said to have ‘a heart that does not bear the suffering of others’. I argue that this statement is illustrated, rather than proven, by the example of our reaction to a child about to fall into a well. This illustration can be located at the most basic level of ethical universals : basic ethical training; further steps in a ladder of reflection are universal reflection on ethical norms themselves, which may finally be related universally to (...) non‐ethical concerns. (shrink)

The essays in this Journal issue offer examples of how textual analysis, literary theory, and the reading and writing of literature can contribute to an understanding of ethical issues in medicine. The editors' purpose in such an issue is to stimulate discussion between philosopher-ethicists and literary scholars whose work concerns this topic. With the concluding essays by editors Clouser and Hawkins, this discussion begins.

Dans ses recherches empiriques, philosophiques et métaphysiques la conscience humaine ne sort pas de sa propre sphère. C'est toujours la conscience qui parle. Par sa connaissance l'homme ne peut dépasser la conscience directe. Par sa pensée il tend à dépasser médiatement la conscience. Cette constatation nous est dictée par le fait scientifiquement fondé que tant la conscience humaine que son contenu sont tirés, c.a.d. révélés, des profondeurs cachées où ils sont recélés. C'est ce qui rend évident que l'homme possède un (...) merveilleux "sens sondeur", lui permettant de reconnaître les hauteurs et les profondeurs de notre conscience et aspirant à la transcendance. Le domaine de l'expérience se borne nécessairement aux phénomènes, et tandis que celui de la philosophie s'étend au fondement de ces phénomènes et à leurs rapports réciproques, la métaphysique, la science des principes, se propose de pénétrer l'origine et le sens profond de toute chose, du néant à l'ultime perfection. Après Kant qui a voulu en finir avec la métaphysique dogmatique unilatéralement déductive, la méthode inductive a pris définitivement le dessus. Cette méthode ne s'arroge pas le droit de juger d'une façon apodictique en ce qui touche aux problèmes de l'existence, qui ont donné naissance aux dispositions de la conscience humaine. Elle s'efforce, au contraire, de faire en cette matière une large part à l'inconnu en démontrant que les résultats sont heuristiques, hypothétiques et problématiques. Ainsi la théorie de la connaissance, la philosophie et la théologie s'accordent à dire que les données microcosmiques dans la sphère de la conscience humaine peuvent être les représentants des entités macrocosmiques. Si la conscience humaine poursuit ses recherches philosophiques et métaphysiques, c'est qu'elle doit sa genèse à une relation universelle dont elle est la représentation. (shrink)

Endochondral bone formation can take place in the embryo, during fracture healing, or in postnatal animals after induction by implanted demineralized bone matrix. This matrix‐induced bone formation recapitulates the embryonic sequence of bone formation morphologically and biochemically. The steps in bone formation in both systems include differentiation of cartilage from mesenchyme, cartilage maturation, invasion of the cartilage by blood vessels and marrow precursors, and formation of bone and bone marrow. Recently, bone inductive molecules from demineralized bone matrix have been purified, (...) sequenced and produced as recombinant proteins. While there are similarities between bone development in the embryo and that after induction by these purified molecules, the molecules responsible for bone induction in the embryo have not yet been defined. Because of similarities between the two methods of bone formation, studies of Bone induction by demineralized bone matrix may help to elucidate mechanisms of embryonic bone induction. (shrink)

Students in introductory philosophy courses bring with them varied preconceptions about philosophy and its place in their education and their lives. Rather than assuming we all agree on what it is we are doing when we do philosophy, it can be effective to problematize the discussion from the start. Plato’s Apology of Socrates is a useful tool for this. While interpreted by some philosophers as not particularly philosophical, recent approaches by Sellars and Peterson suggest that the Apology is rich with (...) philosophy. Here Plato’s Socrates reveals much about himself and his own understanding of the love of wisdom. By engaging in a process of mutual disclosure and active discovery of what matters to Socrates, we give students an excellent opportunity to find philosophy for themselves. As a result, students not only retain an understanding of key themes from Plato but also develop skills and attitudes well-suited to life-long philosophical engagement. (shrink)