DNA topoisomerases are enzymes that can modify, and may regulate, the topological state of DNA through concerted breaking and rejoining of the DNA strands. They have been believed to be directly involved in DNA excision repair, and perhaps to be required for the control of repair as well. The vicissitudes of this hypothesis provide a noteworthy example of the dangers of interpreting cellular phenomena without genetic information and vice versa.

Much attention has been paid recently to the role of anomalous experiences in the aetiology of certain types of psychopathology, e.g. in the formation of delusions. We examine, instead, the top-down influence of pre-existing beliefs and affective factors in shaping an individual’s characterisation of anomalous sensory experiences. Specifically we investigated the effects of paranormal beliefs and alexithymia in determining the intensity and quality of an altered state of consciousness . Fifty five participants took part in a sweat lodge ceremony, (...) a traditional shamanic ritual which was unfamiliar to them. Participants reported significant alterations in their state of consciousness, quantified using the ‘APZ’ questionnaire, a standardized measure of ASC experience. Participants endorsing paranormal beliefs compatible with shamanic mythology, and those showing difficulty identifying feelings scored higher on positive dimensions of ASC experience. Our findings demonstrate that variation in an individual’s characterisation of anomalous experiences is nuanced by pre-existing beliefs and affective factors. (shrink)

Peter Abelard (1079–1142 ce) was the most wide‐ranging philosopher of the twelfth century. He quickly established himself as a leading teacher of logic in and near Paris shortly after 1100. After his affair with Heloise, and his subsequent castration, Abelard became a monk, but he returned to teaching in the Paris schools until 1140, when his work was condemned by a Church Council at Sens. His logical writings were based around discussion of the “Old Logic”: Porphyry's Isagoge, aristotle'S Categories and (...) On Interpretation and boethius'S textbook on topical inference. They comprise a freestanding Dialectica (“Logic”; probably c.1116), a set of commentaries (known as the Logica [Ingredientibus], c. 1119) and a later (c. 1125) commentary on the Isagoge (Logica Nostrorum Petititoni Sociorum or Glossulae). In a work Abelard called his Theologia, issued in three main versions (between 1120 and c.1134), he attempted a logical analysis of trinitarian relations and explored the philosophical problems surrounding God's claims to omnipotence and omniscience. The Collationes (“Debates,” also known as “Dialogue between a Christian, a Philosopher and a Jew”; probably c.1130) present a rational investigation into the nature of the highest good, in which the Christian and the Philosopher (who seems to be modeled on a philosopher of pagan antiquity) are remarkably in agreement. The unfinished Scito teipsum (“Know thyself,” also known as the “Ethics”; c.1138) analyses moral action. (shrink)

Academics are falsely rumored to have a low regard for religion. Although Richard Dawkins and Christopher Hitchens, authors of The God Delusion and God Is Not Great , respectively, made atheism a best-selling subject in the United States, it is not coincidental that Hitchens and Dawkins are English. They were educated in a country where a strident antipathy toward religion is not unpatriotic. American atheists with as much brass are rare. Kicking religion around cannot be an American sport because, from (...) colonial to contemporary times, religion has been a central component of American culture. To be sure, a lot of scholarly criticism has been directed at right-wing Christian and Islamic movements. But scholars whose personal views on faith incline them to echo Hitchens's mordant formula that “religion poisons everything” should probably look for a country other than the United States to study. The recent books of historians and sociologists of American religion have taken a tone toward the subject that has ranged from gentle to friendly. (shrink)

It is suggested that the practice of attempting to normalise children with Down 's syndrome by subjecting them to major facial plastic surgery has no therapeutic benefit, and should be seen as mutilating surgery comparable to female circumcision.

There are numerous ‘solutions’ to the problem of evil, from which theists can and do freely take their pick. It is fairly clear that any attempt at a solution must involve a scaling-down of one or more of the assertions out of whose initial conflict the problem arises – either by a downward revision of what we mean by omnipotence, or omniscience, or benevolence, or by minimizing the amount or condensing the varieties of evil actually to be found in (...) the universe. And indeed, in one or more of these different ways, the charge of logical inconsistency can no doubt always be vouchsafed at least a formal answer. Unfortunately, the mere ironing-out of formal inconsistencies does not of itself go very far towards providing a solution to this central problem of theism which will be morally, religiously, and intellectually convincing and acceptable as well as logically impeccable. Everything depends on how the inconsistencies are ironed out. For every attempt at a solution of the problem of evil has to be made at a price, in keeping with the scale and type of conceptual or ethical readjustments which it requires of us. And if the solutions which are generally offered seldom seem to carry much conviction, this is because the price they require us to pay nearly always seems far too high. A ‘solution’ to the problem of evil that is to count as a genuine solution must not require us to make any conceptual or ethical readjustments which it would not on independent grounds be entirely reasonable to make. A ‘solution’ that was finally to count as the solution of the problem of evil would presumably need to be that particular one which required us to make only those conceptual and ethical readjustments which were on independent grounds the ones that it was the most reasonable to make. What follows is offered as a solution, in the above sense, of the problem of evil. However, I shall not here attempt to argue that it is the solution. (shrink)

My topic lies on conceptual terrain that is quite familiar to philosophers. For others, a bit of background may be in order. In light of what has filtered down from quantum mechanics, few philosophers today believe that the universe is causally deterministic. That is, to use Peter van Inwagen's succinct definition of “determinism,” few philosophers believe that “there is at any instant exactly one physically possible future.” Even so, partly for obvious historical reasons, philosophers continue to argue about whether (...) free will and moral responsibility are compatible with determinism. Compatibilists argue for compatibility, and incompatibilists argue against it. Some incompatibilists maintain that free will and moral responsibility are illusions. But most are libertarians, libertarianism being the conjunction of incompatibilism and the thesis that at least some human beings are possessed of free will and moral responsibility. (shrink)

This article critiques how the chromosomal condition ‘trisomy 21’ (‘T21’) (‘Down syndrome’) was originally conceptualised using colonial, scientific and medical discourses on ‘race’ and ‘idiocy’. Nineteenth century discourses surrounding ‘degeneracy’ commonly intertwined the notions of ‘race’ and ‘idiocy’. In Observations of an Ethnic Classification of Idiots, Down categorises people with T21 as ‘Mongolians’ because of their purported similarities to ethnic ‘Mongolians’. The discourse-historical approach (DHA) to critical discourse analysis (CDA) is used in this article to examine how the (...) ‘Mongolian idiot’ is constructed by Down as the ‘other’, being simultaneously a ‘racial other’, a ‘disabled other’, and an ‘idiotic other’. Down theorises that ethnic ‘Caucasians’ with ‘idiocy’ have ‘retrogressed’ to primitive forms as characterised by the ‘Mongolian family’. His report also essentialises the ‘Mongolian idiot’, defining their ‘degeneracy’ and ‘otherness’ in terms of their physical, behavioural, and mental characteristics. Whilst Down’s ‘mongolism’ has since been refuted, aspects of his report are reproduced in some contemporary medical and scientific discourses. Although these discourses are less essentialist than Down’s, they persist in constructing the ‘otherness’ of T21, by foregrounding its ‘abnormalities’ and ‘disorders’. Significantly, facets of ‘degeneracy’ appear in evolutionary developmental biology, connecting T21 with ‘atavisms’, though without the racial framework. (shrink)

This book<I> argues that a silent axis of the unconscious world rests largely undiscovered. It recasts foundational concepts in the psychology of Freud, Jung, Carol Gilligan and R.D. Laing, as well as in cognitive science, to highlight this hidden unconscious axis: primordial spaces of diametric and concentric structures. The author generates fresh approaches to understanding the philosophy of early Heidegger and Derrida, with the idea of cross-cultural diametric and concentric spaces fuelling a radical reinterpretation of early Heidegger's transcendental project, and (...) challenging a postmodern consensus that reduces truths and experiences to mere socially constructed playthings of culture. <BR> The book, which also examines projected structures in modernist art, suggests a systematic refashioning of many Western assumptions, but it is more than a deconstruction. It also attempts to offer a new interplay between structures and meaning, as a spatial phenomenology. This significant expansion of the boundaries of human subjectivity opens alternative pathways for imagining what it means to be human, in order to challenge the reduction of experience to instrumental reason. (shrink)

We understand the workings of the human body as a series of interdependent physiological relationships: muscle interacts with bone as the heart responds to hormones secreted by the brain, all the way down to the inner workings of every cell. To make an organism function, no one component can work alone. In light of this, why is it that the accepted understanding that the physical phenomenon of the mind is attributed only to the brain? In The Embodied Mind, internationally (...) renowned psychiatrist Dr. Thomas R. Verny sets out to redefine our concept of the mind and consciousness. He brilliantly compiles new research that points to the mind's ties to every part of the body. The Embodied Mind collects disparate findings in physiology, genetics, and quantum physics in order to illustrate the mounting evidence that somatic cells, not just neural cells, store memory, inform genetic coding, and adapt to environmental changes-all behaviors that contribute to the mind and consciousness. Cellular memory, Verny shows, is not just an abstraction, but a well-documented scientific fact that will shift our understanding of memory. Verny describes single-celled organisms with no brains demonstrating memory, and points to the remarkable case of a French man who, despite having a brain just a fraction of the typical size, leads a normal life with a family and a job. The Embodied Mind shows how intelligence and consciousness-traits traditionally attributed to the brain alone-also permeate our entire being. Bodily cells and tissues use the same molecular mechanisms for memory as our brain, making our mind more fluid and adaptable than we could have ever imaged. (shrink)

In this paper, we explore the architecture of downward causation on the basis of three central cases. We set out by answering the question of how top-down causation is possible in the universe. The universe is not causally closed, because of irreducible randomness at the quantum level. What is more, contextual effects can already be observed at the level of quantum physics, where higher levels can modify the nature of lower-level elements by changing their context, or even creating them. (...) As one moves up through higher levels, contextual effects on lower levels occur on various scales within nature, which is crucial in biology in general and the brain in particular. We then argue that there are important logical downward causes.objects have causal effects on material-energetic systems. It can be shown that abstract objects have measurable effects on lower levels, which needs to be accounted for by successful explanations of real phenomena such as intentional action. Intentional action has the form of deductive causation from logical structures to human agency. Without this assumption, we would not be warranted in believing that our physical theories latch onto a universe that is essentially the way we discover it to be. Denying top-down causation on account of the idea that the universe permits only bottom-up constitution of wholes from lower-level elements leads to undermining the very possibility of knowledge and science. Thus, it can be rejected as a global form of explanation. We sketch a model for mind-body interaction according to which the various levels of a human organism together enable the emergence of mental top-down effects. They are necessary conditions for the emergence of human mindedness. Once it is clear that downward causation is a widespread natural phenomenon, the apparent mystery of mental causation is, in principle, solved. (shrink)

Business ethics, as a discipline, appears to be at a crossroads. Down one avenue lies more of the same: mostly philosophers takingwhat they know of ethics and ethical theory and applying it to business. There is a long tradition of scholars working in the area known as “business and society” or “social issues in management.” Most of these scholars are trained as social scientists and teach in business schools. Their raison d’etre has been admirable: trying to get executives and (...) students of business to understand the social impacts of business and to see business in broad, societal terms. (shrink)

A fundamental aspect of biological systems is their spatial organization. In development, regeneration and repair, directional signals are necessary for the proper placement of the components of the organism. Likewise, pathogens that invade other organisms rely on directional signals to target vulnerable areas. It is widely understood that chemical gradients are important directional signals in living systems. Less well recognized are electrical fields, which can also provide directional information. Small, steady electrical fields can directly guide cell movement and growth and (...) can generate chemical gradients of charged macromolecules against the leveling action of diffusion. At the site of a lesion in an ion‐transporting epithelium, for example, a substantial electrical field is instantly generated and may extend over many cell diameters. There are numerous other situations in which relatively long‐range electrical fields have been shown to exist naturally. Recently, there has been substantial progress in identifying specific processes that are controlled, to some extent, by these endogenous electrical fields. This review highlights these recent data and discusses possible mechanisms by which the fields might affect biological processes. BioEssays 25:759–766, 2003. © 2003 Wiley Periodicals, Inc. (shrink)